TELEVISIon. the Philips. Servicin. chassis. TV fault finding. Camcorner. GR 1 sok: Long-distance tv. VCR clinic VARIABLE VOLTAGE REGULATOR CHIP

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Transcription:

MAY 1994 2.20 TELEVISIon SERVICING VIDEO SATELLITE DEVELOPMENTS sou-thland NEwsAGENc? A REED BUSINESS PUBLICATION Servicin the Philips GR 1 sok: chassis CD PLAYER REPAIRS THE 12C BUS VARIABLE VOLTAGE REGULATOR CHIP 0 5> VCR clinic TV fault finding Long-distance tv Camcorner 9 77003 47047 iii

WILLOW VALE ELECTRONICS LIMITED Willow Vale gives you more... parts in stock than you may have realised! More commitment to higher stock levels More technical know-how More flexibility More peripheral product support More dedication to customer care Willow Vale supplies parts for all these household names, with over 230,000 cifferent spares available on our C.O.P.S. database system. Being Willow Vale, we don't just guarantee the quality of our spares. We also pride ourselves on our prices...and our genuinely friendly and knowledgable staff. SAISHO WILLOW VALE ELECTRONICS LIMITED 'The Better Choice' Reading (0734) 876444 Manchester (061) 682 1415

11.1.1.11, MAY 1994 On sale April 20th /1116 Vol. 44, No. 7 Issue 523 COPYRIGHT Reed Business Publishing Ltd., 1994 Copyright in all drawings, photographs and articles published in Television is fully protected and reproduction or imitation in whole or in part is expressly forbidden. All reasonable precautions are taken by Television to ensure that the advice and data given to readers are reliable. We cannot however guarantee it and we cannot accept legal responsibility for it. CORRESPONDENCE All correspondence regarding advertisements should be addressed to the Advertisement Manager, "Television", Quadrant House, The Quadrant, Sutton, Surrey SM2 5AS. Editorial correspondence should be addressed to "Television" Editorial Department, Reed Business Publishing, Quadrant House, The Quadrant, Sutton, Surrey SM2 5AS. INDEXES AND BINDERS Indexes for Vols. 38 to 42 are available at 3.50 each from Video Interface Products Ltd., who can also supply a six -year consolidated index on computer disk. For further details see page 507. Binders that hold twelve issues of Television are available for 5 each from Television Binders, 78 Whalley Road, Wilpshire, Blackburn BB1 9LF. Make cheques payable to "Television Binders". SUBSCRIPTIONS An annual subscription costs 26 in the UK, 37 for Eire/Europe airmail (postage included for all rates) Rest of the world airmail availabe upon request). Send orders with payment to Quadrant Subscription Services Ltd., Oakfield House, Perrymount Road, Haywards Heath, Sussex, RH16 3DH. Subscription hotline for 24 -hour ordering with Credit Card telephone 0622 721666 quoting INJ. BACK NUMBERS Some back issues are available at 2.75 each from Television Back Issues, Room L323, Quadrant House, The Quadrant, Sutton, Surrey SM2 5AS. Make cheques/postal orders payable to Reed Business Publishing Ltd. See box on page 482. ISSN 0032-647X 469 Leader 470 Teletopics News, comment and developments. 472 Servicing the Philips GR1-AX Chassis Steve Cannon A survey of the circuitry used, fault conditions you could encounter and modifications. 477 Test Case 377 477 Amstrad SRD400 Service Tip Hugh Allison 478 Camcorner Reports from Keith T. Keeton and David C. Woodnott. 479 The Panasonic Alpha 3 Chassis, Part 3 Ray Meadows The microcontroller system, video signal processing and the RGB output stages. 483 Replacing S -M Components, Part 2 Steve Beeching, T.Eng. Test reports on equipment designed for soldering and desoldering surface -mounted devices. 485 486 488 Next Month in Television CD Player Repairs Les Austin Modern TV Receiver Techniques, Part 17 Eugene Trundle How microcomputer/microcontroller chips operate, the I2C bus and the way in which today's remote - control systems work. 493 Correction and Service Tip 494 VCR Clinic Reports from Philip Blundell, AMIEIE, Eugene Trundle, Mike Leach, Michael Dranfield, Richard Newman, Dave Mackrill, Keith Evans and John Edwards. 498 TV Fault Finding Reports from Philip Blundell, AMIEIE, Nick Williams, John Edwards, Geoff Fardon, Brian Storm, Terry Lamoon, Richard Newman, Niick Beer, Michael Dranfield and Chris Watton. 501 Satellite Receiver Tuning Made Easy Gordon McCrea, B.Sc. Use of an EEPROM to store arid transfer programme data. 502 Long-distance Television Roger Bunney DX conditions and reception, news from abroad and what's going on in the satellite belt. Also a simple u.h.f. satellite receiver circuit. 508 The Versatile LM317T A review of applications for this useful variable - voltage regulator. 510 What a Life! 511 Letters 512 Help Wanted OUR NEXT ISSUE DATED JUNE WILL BE PUBLISHED ON MAY 18 Gordon Haigh Donald Bullock TELEVISION MAY 1994 457

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255496 SOp STR50113 500p T041001 2000 PCF801 p 10038044 500p 00072984 0111 40P 0072 "'"'" 50p 766107 40p LA4030 120p 180, SAA1272 280p 511(4352 504 5TR50115 500p 7041002 001802 200p TDA3810 80p 467311 200p 0 pc1318 90p IA4031 300, 140p SAA1274 0736 2800 STX4362 450p 51850213 500p SOp 0E200 1809 2618292 400 2041003 150p TDA.39561 PCF806 2250, 11541 AN 7410 150p 184032 140p SAA3004 400p 0826 SOp 120088 1000 296385 120P 004200 1000 4431015 2900 LA40515101392160p 5445000 0704372 4309 S7051041 500p 70410054 175p 7044050 UPC1335V 320p 2000-150p- S4392 5000 D828 52152041 6500 50p 820108 10410104 80p 100p 206403 160p 7044180 PCL81 1460 0001350 1150 Ebp 493.1270 800p LA4100 85p 58,45010 0639 220p 911(4432 600p 52153041 50014 1041011 75p 40P 52800D 52p 36143 65p 7084190 PCL82 180p UPC1352 400p 800 443.1350 4500 104101 800 5445012 400p STK4773 820p 51153043 6500 112A1012 120p 1084200 3600 000135814 250p 458 TELEVISION MAY 1994

UNEAR Cs 2541051 300p 254536 20p 2541625 150p 2SC2329 480p 2502938 2344 250526 120p 250 784 0609 2501399 30.0p 2551 197 140p 250.786 300p 8284 4459 2940 214 170p 8287 2643 -Cont. 2541052 407 2505548 235p 2041626 55p 2502331 50p 28C/939 411419 25C3531 225p 29 786 10433 2541400 2011p UPC1363 1909 2041060 1200 254563 120p 2541627 15p 2502333 200p 25C2944 300p 25C3547 loop 250-787 20p 2S0-1402 1809 250 216 200p COMPUTER les 8288 650 DPC13830 300p 2541069 1544 291303 40p 25C1628 7543 25(2334 80p 2542958 500 25(1549 201143 250-788 30p 20111404 125p 250 217 35p 2114 150 8748 700, UPC13619 350p 2041076 230p 204605 1009 200634 507 250335 75p 292960 60p 25(3552 300p 250-789 20p 250-1406 513p 250 218 4003 2532 200p 8755 800p UPC1365 350p 25A1077 300p 25(619 100p 291664 300p 292344 80p 292962 800p 2543656 200p 250-792 40041 250-1407 60p 250 240 140,, 2716 100p NOACPU 100p 0941367 5001 2541081 60p 254641 bp 2541669 100p 25C2347 60, 25(2979 160p 2043503 170p 291794 33p 291-1406 1 bp 2SK 270 509 2732 200p Z80134PU 1609 UPC1370C 300p 2541082 Bap 25043 5009 2541674 15p 2502353 120p 20429617 2509 20C3584 2094, 750-7958 1400 2061409 170p 290 294 3503 2732A 220p 180401014 200p 0941373 85p 2541004 100, 29644 10p 2041675 90p 2542360 120p 25(2988 150p 250595 220p 200411 4509, 2561412 bp 25K 310 2009, 2764 150p ZBOAPIO 1509 UP41377C 200p 2541085 75p 204647 3001 2SC1678 800 2SC2361 1509 25(2995 609 25E3596 nop 293819 200p 2561413 by 254 312 7500 27464 2009 29013910 150p UPC1378 180p 204109, 100p 292681 2609 25C1683 1001 2542362 509 254.2999 509 253604 650p 291520 293p 2541414 710p 250.315 709 27128 150p 28044TC 1409 UP41382 1106 2541093 300p 29,683 354, 2501684 309 292165 2879 2043001 1400, 293605 609 250-821 556p 250-1415 190, 251( -320 120 27256-25 1513, 380B4T(. 200p UPC/384 425p 25.61094 190p 254708 1009 291685 30p 292363 6000, 2543012 3079 2543606 100p 200.822 2904, 250.1417 13p 255322 1409 27512 300p 290490 210p 09413874 2506 2541095 200p 15p 2041729 9030 100p 293019 320p 293607 150p 256826 30p 254 1425 240, 2SK.323 130p 4116 40p 28085531 2179 250710 2042369 UPC1394 120p 290096 809 15p 2041730 10p bp 2543021 12509 2543608 1209 293836 600 250-1426 110p 294.-358 300 416415 80p 2804516-2 210p 2971, 2042371 UPC1397 350, 2541102 130p 50p 2541735 707 2101 500p 2043631 130p 2008364 609 2501427 1109 250-370 40p 4164-12 90p 03404141 2600 25C71/ 292373 250025 1)1132-2541103 1311, 29730 360, 291740 10p 2042383 50p 2543026 550 2043636 200p 250-837 55p 250-1428 NOp 250-371 40p 4164-10 1009 740289 180p 14034A 650p 2041104 140p 29732 40p 25(1741 99p 292389 45p 293030 3009 2543651 bap 200-838 300 2561429 410? 250-3603 600p 41256 15 1039 745387 200p UPC- 2541105 2609 204733 15p 291752 70p 25C2407 110p 293037 1259 293657 4079 250 841 110p 2561430 200, 294-388 8509 41256-12 100, 75107 659, 142044 450p 2041106 160 29735 40p 250755 90p 254.2408 1209 293038 125p 2543659 600p 250844 2009 250-1431 460p 295405 450,, 4125610 110p 75110 753 UPC. 25,41111 90p 29738 15p 2541756 35p 2542412K 50p 2503039 80p 20C3668 120p 250 845 15App 2501432 4430p 255.413 5003 41484-12 160p 75113 1009 1421CA 650p 2541112 150p 254739 160, 2041758 30p 2542413 50p 2543040 260p 2043676 100p 297850 750 200-414 5019 4146410 2000 75122 1109 UPC- 2541115 30p 25C7131 1109 2501765 1000p 25(2429 300p 25C3042 30043 2543678 280p 251856 489 250 1438 1-439 298-415 500p 6116 50p 75150 95.? 1423CA 55043 2541123 40p 250761 150p 250775 10p 2542431 3043 2E223057 1543 2543679 180 250-858 250 150-1439 195p 795429 180p 6264-15 160p 75154 1000 UP41470 20179 2041124 60p 254783 115p 2541781 20p 2042437 130919 200058 3500p 290586 3844 250869' 23p 2541467 1.59 250-511 450? 5264.12 200p 75162 7000 UPC1504C 4009 2541137 50p 29790 50p 2041789 100p 292440 2009 2503059 900p 20(3685 4504, 250854 20419 250.1445 MOP 250-513 325p 6264-10 210p 75182 954 UP3215054 400p 2541133 1209 29792 380, 2541809 *094, 2592458 lop 2543080 1100, 25(3687 gpop 250866 1209 200.1440 1-09, 250-517 200p 62256-12 300p 75183 959, 32932-2541141 200p 254805 225p 2041810 250p 292469 50p 2923061 16009 293688 5600 200-666.4 140, 250-1450..Op 29031 3541 6502 300p 75188 50, 151404 2009 2541142 100 2548054 2501 201815 100 2542461 400, 293068 (Op 29901 150p 250868 260p 2561451 2509 25K-534 700, 66024 3010, 75189 553 UPC- 2541143 409 754828 20p 2541819 70p 2542462 50p 293070 35p 2543692 150p 250870 190, 21561457 350p 250-537 900p 6902 9309 75195 185p /515CA 2509 2541145 40p 29829 15p 2541826 40p 2542470 65p 2543074 200p 7043705 120p 20 871 300p 20614E3 11.02, 251( 538 4601 6522 25% 75451 40p UPC15200 2041152 150p 29839 5% 2501827 6.09 25(2481 12043 25(3075 150p 25C3715 480p 250823 609 2501456 2509 255539 1104, 6651 380p 75454 60? 2979 25.41156 90p 25(869 120p 25C1825 SOOp 25C2482 20p 250077 120p 25(3717 120p -!`.0880 40p 250-1457 rop 255555 400p 6800 2109 70492 55p UP32153632 550p 2581162 30p 250370 1001 25011332 4044 25(2483 120p noon 150p 200719 150p 29)082 25p 2561459 1NP 255-556 5003 6802 220p 8126 95p 29423 100, 2541169 500p 204898 275p 2541833 40p 292484 185p 250088 130p 20C3729 4501, 2508924 1009, 241468 70 255-667 4000 68113 5044 8128 1144 251-566 4753 6508 5009 25424 100, 2041170 5009 2501006 300p 2041834 5C9 2E42491 2004, 200096 100p 200743 2709 :SD 894 356 2S0-1479 200, 25425 120p 2541175 30p 20030 15p 2541844 50p 2542495 19000 293099 100p 293746 100p 200 89 200p 250-1487 25p 251-896 5543 6809 500p SWAS--9801100 25(426 2609 2541184 1200 29941 15p 7541845 15p 2542498 50p 250101 750p 25(3747 120p 206886 /00 2501491 100p 25K-719 3003 6810 1544 256K ZN427 560p 2041186 500p 25043 160p 291846 36p 292500 259 250102 2000 293752 nop 250-900 400p 29/1494 300, 2514724 00044 68,8 3809 2568 90 70 1100, Z5429 215p 2541198 409 29944 1409 2041847 46p 25322602 200p 293104 1650p 2543769 7000 250-905 450p 2911496 NOP 2M-725 6019, 0840 209779, 1848.4 80 3000, 25435 MOP 2041206 60p 254945 lop 250855 ((p 25322509 111039 293105 3600, 293781 150p 250916 130, 2061497 290p 256-727 12004, 6845 20979 1M6 9 9]U 32009 266448 510, 2541208 70,p 25060 40p 25c1 25p 25c2515 125p 292112 35p 293783 000p 200 917 300, 250-1606 120p 250.735 603p 8951, 909 (N459 190p 2941209 100p 25059 22Sp 2541861 400p 2542519 60 2543114 40p 20(3787 100p 2511921 320p 25151507 93p 255-768 3030 8,2804 3800 Sin 291040 640p 2541310 120p 2508130 40p 2541865 700p 25C2523 500p 25(3116 7Sp 25(3789 760 250-923 36043 2541509 SlOp 250-787 11000 80854 300p 2560, 980 1100P Z0413419 21579 2541215 1100 25082 20p 291870 700p 297577 3044 25(3117 120p 25(3790 120p 2513 946 120 250-1511 130p 200-794 5000 8086 2566-5 70 12043 24542340 12544 2581216 5579 250983 12044 201871 6044 2542534 1509 25(3122 50p 253795 175p 250-94/ 1043 250-1519 Zap 250-872 6543 8088 480p 1403-9 80 310(44 2541217 100p 2SC998 6079 2581320 75p 2SCIOOU 20 2041875 2(2535 3009 25(3130 100p 25C3793 220p 2513 950 300p 250-1521 70p 250-373 000p5 8156 300, 148 - J /0 320e9 241881 70p 2542538 1013p 25423133 6043 25(3807 120p 250951 2944 2501541 MOp 251C- 1057 Oop 81196 130p JAPANESE TRANSISTORS 25412278 3006 25E1001 960p 25(1890 1541 25(2539 100014 293148 1859 2S43811 1117p 2SD 957A 5210, 250-1548 050, 29(-1058 4005, 81L097 134, OPTO 254473 299 2541232 1110p 2041006 5% 2041906 15p 2042540 1900, 2543149 1800 2043832 200p 256959 609 250.1554 170p 25K-45 100, 811098 1301, COUPLERS 254483 175p 2541242 801, 2041010 220, 291907 20p 292542 3009 293150 1259 25(3013 250( 254965 36p 2061555 TAN 2SK-51 1079 0224 2409,th125 503 294490 45p 2541244 120, 2041012 759 2541909 250p 292546 55p 250151 230/ 291051 2200 254970 170p 2911556 130p 2SK-59 loop 8226 240, 4526 50, 204496 1001 2541246 80p 2541013 1701, 2541913 90p 2542546 25p 293152 130p 293854 250 29-973 60p 2061564 TAN 250-73 64, 8243 5% 46427 544 254496 30p 2541249 1004, 291014 140p 291921 15p 25(2547 65.43 2503153 230p 204145-5 220p 209734 70p 2561565 75p 25K-74 50p 8250 750p 4928 547 254505 120 2541261 150p 291030 150p 2541923 100 2542550 50p 250156 3500 2543807 500, 250 985 1205, 2561571 770 250-77 5014 8251 200p 4529 90p 204509 369 2541262 1169 2541047 20p 2541929 11000 292551 700 290157 200, 293858 56079 256986 120p 2561572 TDOp 25081 50p 8253 180p 4530 90p 25400443 254537 17014 2581263 280p 2501050 280p 25(1938 1544 25C2652 6044 25(3158 260p 20(38/0 2079 25151012 40p 2541576 379 250-85 loop 8256 160p 4531 90p 204544 650, 2041264 2000 291060 70p 2541940 110p 2042553 200p 293159 200p 200883 280 2561020 409 2541577 bot, 255-87 46p 8256 7009 4.533 100p 294550 150p 2041265 20op 250081 950 25C1941 27p 25(2555 120, 2543164 35/9 2043830 150p 2501021 1205, 2501579 120p 7501-88 70p 8257 220p 4.533 1009 254562 30, 2041283 50p 291070 615p 291942 350p 2542562 90p 2543169 150p 2543E610 4000 2001022 1009 2541589 sop 2S5-121 150p 8271 34009 4536 Sap 254571 6501, 26412134 60p 2041079 2509 2041944 350 2542563 2009 200170 300p 2513817 9494 241024 130p 2501590 TOOp 205-129 175p 8279 274, 4537 bp 204003 1005, 25.41285 60p 2541096 40p 291945 350p 250564 230 2923173 1000 25(390/ 2600 20 1030 25p 2501591 3179 205-165 2259 8283 4009 4638 680 254606 200p 2541286 60p 2541098 1209 291946 1500p 25425E6 260p 25(3175 150 2043909 4500 250-1031 70p 2561593 1259, 254608 150 /11290 150p 25411034 1309 2541947 450, 2042580 120p 2043178 175p 2543927 550p 300-1037 7509, 2561595 160? BRIDGE RECTIFIERS 254614 150, 2541294 460p 2041106 18,3, 2SC1956 900p 2SC2570 30p 25(3179 70p 2543946 120p 250-1046 Topp 22arleo4 300p 204634 509, 2541295 500p 2541114 4156, 2541957 70p 2542571 350p 25(3181 200, 793950 12021 2561047 MP 4 0p26? 8005 144/608 254636 50p 2541301 260p 291115 2110p 291959 10p 2542577 110, 20431132 120p 293953 80p 2561051 130, Z50-1609 7 P W(1 14/100V 10, 258639 150p 2541302 300p 25C1116 290p 25(1962 200p 20C2578 1779 2043199 40p 293954 15910 250 1080 130p 293-1b0 50P W(2 1 Ar2o0V 157 254640 60,, 2581303 400p :541124 370p 291966 115op ZSC2579 110p 293209 120, 2923973 210p 250-1062 150p 2061632 500p 254642 50, 2541304 110p 291128 1794, 2541967 1300p 2542580 175p 250210 550p 200875 Zbp 2061063 200p 20D-1633 '25p W(4 141400V 219 204673 15p 2541306 110 2541150 400p 25(1969 164, 2542581 225p 250211 220p 2543987 220p 2001064 299 2561437 50p WOO 14/6001/ 256677 351, 2541307 100p 2041160 150 2041970 100p 2542588 6000 250212 260p 250996 12(039 2561065 160p 2941647 WOO 14/800V 254679 26P 2041309 509 2541161 110p 2541971 400p nosso 40p 293225 50p 2044006 100p 2061069 150p 29-1649 360p 86810 24/100V 29A033 25P 2541315 1009 2541162 30, 2541972 600, 292591 50p 2043244 45p 2544020 nop no- Ian 45op 2S0-1660 180p 00606413200 2A/24/24,m008 2599 2541316 LON, 2541164 600, 2541973 150, 292592 200p 291246 50p 2544023 5%p 25411073 150, 2561661 1500 204699 1001, 2041317 309 2541165 7509 291903 759 2542603 10, 293257 275p 294056 393p 2561008 1509 no- 1 es3 4501, 690613 2Al6004/ 254706 250p 2541318 20p 2541166 100p 2541964 1504 2542608 070p 250259 360p 2044106 20041 250-1084 5.20p 29)-1664 40p EMEND 2.41800V 254708 240p 2541321 80, 2541167 120p noses 100p 2542610 60p 293260 220p 2SCA123 450p 2861110 225p 250-1666 90p BR32 34/200V 0 254711 2000 2541329 200p 25(1170 180p 2SC1986 100p 2542611 30p 293261 230p 200124 250p 250-1111 20p 250-1667 120p 82134 34/4008 16443135! 254715 509 2541348 209 2541172 1509 2042001 159 292613 297p 2043262 280s? 2544169 609 2561113 2259p 250-1.209 61536 34/600V 200263 2110p 1001, 8R62 64/200V 45 (1,/ 254719 50p 2561352 100p 2501173 40p 204233, 15p 2542615 4069 2544236 550, 250-112s 200p 2561677 254720 20p 2541353 100p 2541195 2109, 2042003 20p 2042621 70p 293264 3909 294237 650p 2501133 1009, 2561730 8864847400v 254725 604, 2541356 100p 2541212 35p 29.1001 20p 2542525 190p 2543266 50, 2544242 170p 297-1135 75p 29-1732 -AlOP 8R251 2643100V 254726 20p 2041158 130, 2541213 15p 25(2021 10p 292626 600p 2543268 1101, 2544262 50p no -1 in 5 P 25 1739 395P 139252 25N200V 204733 1544 2541362 1009 2501214 lop 2542022 1100 2042530 1900p 2543289 50p 2044101 5500 2561140 AN 250-1740 25p BR254 254/400V 2047474 425p 2041370 100, 291215 5% 2042023 180p 25(2631 20p 2043270 50p 250196 140p 2561142 3509 2911748 9 P 89254 2541600V 2:10!01:; 254748 61119, 2541371 100p 291716 200p 2042026 30p 292634 109 7043277 2130p 29)199 1959 200.1148 175p 293-1760 80p 80258 25N8OCV 2400 254764 200p 2541380 70? 2041222 160, 2042027 200p 2542635 450p 2543280 2009 200200 18,34, 2561151 254789 80p 2541381 100p 2541226 75p 2542028 75p 2042636 40p 200p 293201 260p 2541159 5 P 2S0-1762 901 200-1773.60p 5aP 4111351 356/100V 2933281 E1R352 35.4/200V 2009 20A770 200p 2541382 120p 2041252 150p 225(2029120, 2922655 bp 2543284 600,, 200257 1954 293-1190 1509 2911783-50p 254771 90p 2041385 1130 2041275 700, 2542037 50 2542640 1800 2923293 bp 250313 25p 29411634 220p 2561796 180 993543542400V 2245 254777 35p 2541386 100p 2541278 110, 292053 120, 2042653 100p 2543296 125p 250315 75p 200-1164 No 250-1615 100p 60356 35/000N 236, 254778 100p 2541423 30p 2541279 aop 292056 150p 292654 180p 2923298 50p 250325 30p 2561160 270p 20-1825 609 80358 354/800V 200 254781 15010 2541442 200 291306 90p 2542056 46041 25C2655 7Sp 250299 1209 250330 65p 25611613 2210p 2061843 100p 851691 1 54/100V 446) 254786 25p 2541443 7579 2S41308K 5% 292058 20p 292656 5579 293370 140p 20.348 31709 2911173 3501, 2001846 150p 85179 1 54/800V 4330 254794 50p 2541489 330p 2501312 443 2542060 60p 252660 100p 2503333 100p 2713357 40p 2911185 400p 250-1849 12541 TRIALS 254798 30p 2041491 3005 2541317 16p 2542061 7Sp 292665 200p 293306 130p 293358 40, 2911186 400, 250-1860 1251, 254014 60p 2541493 5009 291318 10p 2542068 6.01, 292668 10p 2043377 600, 250371 240 2801107 290 29113E0 409 1142060 474/430V 60, 204816 150p 25A1516 280p 291325 400 25(2071 1444 25C2671 100 2543309 15043 0513360 44544 2901189 55p 25611377 map 1142250 64/4000 69p 264817 24, 2541535 1259 2041372 20 2042073 40p 292681 1779, 25(3316 2800 20081 50p 2501190 1509, 2501878 71422613 84)4009 59p 230 2541336 20p 2541538 80 25413310 15p 25(2075 60 2542682 70p 2933317 350p 250388 150p 2041191 1244 2561879 8759 374.23430 124/400V 850 254037 270p 208324 40p 2541342 15p 2542078 96p 292688 27p 2543318 400p 200369 80p 293-1192 90p 200-16034 1009 13(260166+4000 1050 254E139 110p 258370 46p 2541343 225p 2542061 9500 25426350 75p 293320 410 250400 14p 2941196 1501, 250-1686 450 13322530 20424008 291844 20p 293546 46p 2041345 15p 2042065 100p 28(2694 12004 293327 609 250401 50p 250-1197 1501 2911987 050 1142630 25-414001/ 254844 20p 29560 5% 291346 100 292066 60p 2542605 2600 293331 25p 250402 1209 2501207 40p 2501896 9043 112800084/400V 254872 25p 258561 50p 25C1358 270 2502092 100p 25C2705 544 2543333 120p 2513415 56p 293-1210 280, 20-1910 280p THYRISTORS 2548724 50p 28562 5% 291359 159 292094 1200 natio 50 2SC3336 8544 700424 350p 241211 120 2061911 300 254093 46p 258566 90p 291360 70p 29.2097 2300, 292712 20p 250345 100p 2013426 1504, 24121e 75p 201313 50p 255061 0.84/608 254899 40, 256595 55p 2541364 25p 2542090 600p 2042716 50p 250346 200 250427 350p 2501 223 7Sp 2561929 41060 4474008 28o 60 254010 100p 258596 50, 2541383 25p 292099 2500p 2042719 25p 293352 200, 250438 35p 29/1225 1205, 200-1919 75p 13(116(2 82300V 589 204907 660,, 29596 30p 2541384 20p 292102 1900p 2542721 1204 293353 2800 250467 159 1931227 40p 2561941 T1411608434808 200 SON, 257,809 500, 293600 5002, 2541390 550 2042118 1100p 292713 2043 293355 50p 250468 15p..613.1229 254, 2061959 280p 1341165184/600V 799 204913 100p 258646 40p 2541193 2op 292120 op 25c2240 450p 2643356 1206, 250471 24, 2S12.- 1237 370p 250-1961 50p TIC1260 12424009 750 204916 30p 2086464 90p 291394 15p 2542131 550p 2042749 3601, 292358 50p 200525 SOp /513-1246 20p 25D-1978 50p TIC 126M 12.426008 909 256321 40p 258647 20p 25(1398 55p 292139 3S0, 2542750 300p 2543361 sop 2S0525 70p 2531247 40, 2013-1964 150p 136103 370 254933 30, 2513648 46p 25(1400 50p 2042141 60 2542751 770p 2543376 300p 250545 10 2001248 2704, 2562012 50p 80303 850 20054.9 11909 no -2046 50p 13T106 180p 254934 30p 204935 40 204937 20 254939 140p 254940 50 254942 60 258648 258688 208703 208705 208707 258716 28E1718 208727 758754 258755 35p 90p 90 200p 2009? 20 60p 200 80p 314, 2541403 291407 2541413 291419 291424 2541426 2041429 25(1844 26(1446 2541447 500p 504, 150 50 460p 700p 50p 275p 56p 70 292149 292150 2542153 2542166 292160 292181 292188 25(2199 25(2200 2502221 500p 400p 40p 00p 120p 2100 /Op 600p 250p 650p 292752 2542753 2042767 292769 291773 292774 2542786 2502786 25C2787 25(2791 204949 70 5644 254950 114, 22543 254952 54, 200p 254353 NV 254954 759 258772 25p 2041448 100 292322 1350, 3542792 2209 293409 400p 200613 70 2501773 50p 759? 254957 250 208774 50p 2041449 120p 25(22284 60 250793 700p 293412 8009 200636 109 2501275 50p 257106 40p 140p 1001 3001 4000 700 504, 60 20p 10p 500 25(3377 2543378 2043383 250387 293393 2543397 2543399 250433 2503401 293402 50p 1240, 00 5504 80 30p 50 3644 50p 40 25056' 2D555 200190 2515' 250575 250600 250661 250602 200612 1304, 300p 500p sop 20, 500 309 400 644 50 2561251 200-1263 20 1264 2541265 250 1266 2501267 20612674 2541271 25012714 2561272 90 56p 760 180p 50, 1256, 25148 25.649 20.1.50 29-56 25.1-74 29-75 25776 254-77 29-79 25.7101 425p 425p 425p 700p 60 280p 220 350 2250 67116 804. 61119 1031, 11(44 22,, 13088 2004., /089 2000 1/127 2000 '5.10444 2009 56,8511 2550 544264 8000 5(3613 8000 254958 60 258775 100p 291460 200p 292229 15p 2928013 40 250416 30p 200637 15p 250-1276 60, 29-108 60, SERVICE AIDS 254963 1204, 258791 2809, 291454 250p 2S42230 8930 292810 3600 250417 90p 254638 15p 2061277 1904, 29-115 525p 254965 Mg, 258795 60p 2541470 120p 2042233 100? 2042812 40p 200419 120p 250639 20p 250-1279 601p 29-116 1000? 5U81052 PRODUCTS 2549966 35p 258625 135p 25414714 mop 200235 60p 2502914 40p 200420 1209 200640 350p 2061288 175p 29-117 550 V11160 HEAD CLEANER 140p 2545% 569 208861 110p 2541472 40p 2542236 206 292824 75p 2923420Y 80 200642 509 2001289 2501, 29.118 600 SWITCH CLEANER 150p 254970 bp 208882 100 2541473 15p 2042237 59,09 2542825 900p 2$43422 110 200655 18p 2501291 uop 253.119 700p SILICONE GREASE 170p 254979 35p 256886 90 2041474 45p 2542238 45p 292826 200p 2934220 75p 20661 60p 250-1292 60p 253-122 600 FREEZE IT 170p 204964 259 293960 180p 291475 60, 292240 15p 292877 200 293423 60p 29666 259 250-1297 300p 253-161 650p FOAM CLEANER 1706 204985 604, 258961 190p 2041505 80p 2042246 1050 3542832 300p 2543446 150 250667 20, 250-1302 20 253-162 680 ANTI -STATIC 170p 254306 25P 2081009 1101 291506 7Sp 292258 30p 2042834 400p 293447 200 291868 1279 2561308 800 20519 469 AEROKLEANE 140p 254992 2.19 281077 180 2541507 45p 2542259 60p 2542837 2501, 2543450 350 200669 35p 2561309 140,, 25540 50, AERO DUSTER 170P 254999 30 2981109 100p 2541509 05p 292/70 60 2542639 40p 290466 200p 250673 350p 200-1310 140p 25049 50 PLASTIC SEAL 16op 2541006 909 29182 759 2541514 15p 292271 30p 24.2853 70p 293457 125p 250676 250 2541313 10000 29896 1000 GLASS CLEANE 1601 2541008 125p 25(369 80p 2541516 60p 2542274 15p 292876 1209 2543459 lab 250716 80, 29)1326 200p 25568 100, 2010KLE NE 2041009 2009 25p 2041520 45p 292275 50 292877 120 2543460 1800 250717 180 2931328 60 2573 75p 204372 2041010 2256 non 10p 291541 110, 292278 700 2542878 20 750461 350 200710 BM 2061347 70p 254(-106 40p IF YOU PURCHASE MORE THAN 2541011 60p 29382 50p 28C1545 1279 2902283 000 2542879 3200 200466 225p 250722 240 2061348 65p 255-107 40 2041012 869 204389 30p 2541561 400 2542284 1200p 2541013 100p 25438/14 60p 291566 35p 292287 900 25(2883 609 2043467 70 200725 3709, 2061360 150, 250-109 120p ONE SERVISOL PRODUCT P&P 2542698 200p 2543468 70p 293734 159 2561376 1259 2S0-110 50 2041015 159 704394 00 nose 56p 2942290 1800 2542899 50p 200481 5% 256741 120p 2561379 100p 255.125 100 WILL BE CHARGED AT 300p 2041016 30 25(403 75p 2541570 40p 2542291 AV 292901 60 293482 275p 293743 1109 2001380 100 255-133 650p 2041018 100 254454 15p 291571 509 2542295 60p 292909 60p 293486 275p 256756 100, 250-1383 100p 255134 415p 2041020 30 20.458 10 291573 25p 2502296 35p 292911 80p 250602 100p 2S0 757 120 250-1384 50 21.135 415p 2561021 35p 25(480 10 291576 450, 292307 5009 292912 120p 293503 50 250-758 140, 2561389 2009 250-147 160 GRANDATA LTD 2541023 OOP 254461 15p 2541580 600p 2542306 10 292915 6200p 2543504 1209 250-762 1009 241 380 364p 2sK- no 150p K.P. HOUSE, UNIT 15, 25A1026 90 254491 200p 291583 25p 292310 50p 292921 660p 2043505 240p 206763 140 2901131 250p 250-162 1159, 2041029 60p 254495 45p 2541585 270 2542312 300, 2542922 480p 293506 260 250780 180 250-1392 150 2U-163 40 POP IN COMMERCIAL CENTRE, 2541036 4444 29496 25p 2541586 540p 2042314 70p 2042928 550p 293507 660, 250-772 200p 2941395 150p 255.1613 40 SOUTHWAY, WEMBLEY, 2041037 50p 29497 85p 2041617 3401, 2541316 150p 2542929 2103p 2501609 2924, 256773 20p 250.1396 120 2155.176 800P MIDDLESEX, 2541038 40p 295154 100 2541623 50p 292320 10p 2542934 75p 293518 120p 250-774 30p 2561397 120p 250-192 45P 2541048 25p 25035 Alp 291624 80p 2542324 120 292937 2509 250519 aop 250-777 400p 200-1398 120, 250.196 150p ENGLAND HA9 OHS Tel 081-900 2329 Fax 081-903 6126 FOR EVEN MORE BARGAINS TELEVISION MAY 1994 459

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,. ' FLYBACK TRANSFORMERS FERGUSON WD -4208-001 TX9 14.00 0004208-002 1X9 1400 030-4-235 002 OIG 1090 E14.00 0623-088-001 12(100 0400 GRUNDIG 29291-01995 moo 29201-024 11 614.00 PHILIPS PS 140-17112 GI 1 614.00 PS 140-10306 GgniLF 1150 PS 140-10353 0908 0550 PS 140.10151 1(12 15.00 PS 14010283 K30 630111 15.00 PS 140-10246 K40 13.00 PS 140.10247 Kra 14.00 PS 14010149 KT2 6.00 PS 140-10161 KT3 E9.00 PS 140-17033 GO 1 0.00 PS 14617089 G9 E10.00 PS 14410328 NC3 14.00 ITT CVC20 11.50 CVC25 11.50 CVC30 E11.50 HITACHI OUTPUT TV MODULE HM6251 (REF 23705511,50 HM6232 E8,00 IDLER TYRES Order Code AKAI MI327773 1T01 AKAI MZ386960J2 1102 Gfx FATAR VXP0521 1T17 HITACHI 6861471 1103 HITACHI 6861482 1104 HITACHI 6886971 7105 JVC/FERGUSON PL/489678 1106 JVC/FERGUSON PU513110 TO7 JVCITERGUSON PU514021 TOR JVC/FERGUSON PU55373 Tee JVC/FERGUSON PU55374 1110 PANASONIC VXP0329 Ti 1 PANASONIC VXP0343 112 PANASONIC VXP0344 113 PANASONIC VXP0401 114 as PANASONIC VXP0433 PANASONIC VXP0463 11 16 PANASONIC VXP0521 11 17 PANASONIC VXP0581 SANYO 14306621115620 1119 1720 SHARP NIOLOCIE5GE2Z SHARP NIDI.0006GEZZ SHARP NPLY0107GE22 PRICE 22p EACH Price 18p for peck of 5 for /lath model Price 159 for pmk of 10 for eech model IDLERS AKAI VS1-2, 1764-5, V53 6, 12, 56, 58, 59 VS1-2, VS45, VS3, 6, 12, 59700 55125, 126, V$1, 3, 4, 9. V515, 58 VS23, 35, 37, VS66. 75,15477 VS9703 VS9700 FERGUSON 39100 39101, 3522,3292, 3516, 3822 8903,8909, 8912, 8922 3423, 35293530, REEL IDLER PU48967 1250 3531, 31/32 3535, 8923, 8924, 8972, 8930, 8931, 8940.8941, 8942 3523, 3531 3V26, 3530 3531 3532, 3535 ROLLER ASSY T-1.84 IDLER PU490424 51402 EOM.1 26 3529,3530 39132,89,90 8931, 8840, 8941,8942 31/35, 3536 3538 3139, 3549 8943,8944 31/35, 3538 3538 3539, 3549 8843, 8944 3558, 3559 3564 REEL IDLER T -UP CLUTCH IDLER ARM PU55374 PU55373 PU58645 E235 1/2.00 12.25 3565, FV10 5411, FV12 F1/13, EV14, FV20, F521, FV22, FV26 FV30, P/32 F533,8950, VC1 al L 3542, 3543 CLUTCH ASSY PU55822 E13.50 3543, 3544 31/48, 3V53 & PULLEYS REPLACEMENT 0515 FF-REW IDLER M1327773 4.50 VS15 T -UP IDLER 65327815 asp 59, 59 IDLER 891321979 600 155, IDLER ASSY M2366963J2 11.00 3V42, 3V43 3545, 3548 3553,3554, 3555, 355E, 39157, 8947, 8948 3544 SUPPORT CLUTCH PU55044-1-5 1280 3545. 3548 3553,3554, 3555, 39156 31/57,8947.8943 3500, 3501 3516 LOADIN IDLER P143681 E4.00 3522, 3292 8900.8901, 8902, 5903,8904,8906 8909 8312,8922 WOO, 3501 3516 REW IDLER PU43608 06.00 3292, 8900, 8901, 8904, 8906 3516 3522.8902 8909, 8912, 8922 3516, 3522, 8902 E909, 8912, 8922 IDLER IDLER PU49281 PU49283 1.70 61.00 1118255, VS165, 240, 244, 245. 247, 248, 250, 612, 515, 516 5522, 38, 105, 112, 115, 116, 205, 220 VP7100, VS9309 T -UP IDLER PU47752 0450 VS9500, V09900 9107100. VS9300 UNLOADING PU46381 f4.00 VS9500,569800 VP7109, 559300 VS9500, V$9800 VP77, VS10 IDLER REW IDLER REEL IDLER PU46380 01/327815 6,00 3,00 VP88 IDLER 897336067 6.00 12 REEL TABLE 130347731 (5.50 53, 55 CLUTCH ML373043 FISHER FVHP420, 510.530 FF.REW PULLEY HI638531 100 FVHP615, 618.620 COMP. IDLER ASSY 81430420400300 E3.30 FVHP622, 710, 711, FVHP720, 721, 722. FO4P725, 730, MO EVI4P840,9 6, 906, FVF1P908, 910, 911, FVHP915, 918, 918 FVHP615, 61E1,620 GEAR IDLER ASSY H1439450400900 4.50 FVHP1322, 710, 711, FVHP720, 721, 722 F5HP725, 730, 830, FVHP840 FVHP815, 618,620 REEL TUP ASSY 81433410400900 5.50 EVHP662, 710, 711, FVHP720. 721, 722 F5HP725, 730, 830, 59114P840 FVHF906, 906, 915, ASSY R1433490402400 4.00 FVHP910. 911, 915, FVHP316, 918 FVHP975, 991,990, IDLER 81430420400700 450 FVHP999, 5385000 FVHP5050, 5075 5100 FV11040, 56 140 REEL DRIVE ROLER 6.00 FVHPi, 19, 20 FVHP975, 930, 990 GEAR 0.00 FVHP975, 993, 990 CLUTCH 512430510404200 9.50 FV14P420. 520. 530 IDLER E2.80 FVH14420, 520, 530 TAKE UP IDLER E160 591140590 LOADING GEAR a oo 56.53500 REEL DRIVE PULLEY 620 1/8.53500 IDLER 3.00 V8S7000 REW IDLER 6120 GOLDSTAR GH51221, 1232, 1240 CLUTCH GEAR 4350384 0200 GM/1241, 1242, 1243, 01451244, 1245,1246, GHV1247, 1248, 8000, GH58200, 6210, 8215, GHVP51, VCP4100, 4130 01441221,1232, 1240 IDLER E1.70 GH51241, 1242, 1243, GWV1244, 1245, 1246. G141/1247. 1248, 130X/, GHV8200, 6210,8215. GENP51,91004100, 4130 'WM VXL3, VXL20 REEL IDLER 40000/09 " -.1' V)(1.2 IDLER "SO 5X14,5XL35 IDLER 4225 1.004, VXL35 CLUTCH 0... 50_ VXL4, VXL12, VXL25 UMBER POST 4... %/nal VX136. VTV300 VXLS, VXLE CLUTCH (3,...,,.,..70 VXL5, VXL6 GEAR HOLDER 4-4-.: VXL7, VXL0, VXL9 CLUTCH 0.0.4 RITA00 VT1131516164 CLUTCH ASSY 6879515 L2-50 VT14, 17, 19, 38, 57, 86, 88.34, 35, 39, 52 61 62.65, 85, 0, 640, V1166, 51120220. 100, 110 CLUTCH ASSY 6886824 (7... 111, 113, 115, 118, MO 6886972 i25.120.120,135.120,145,150,175.225,260. 258, 2E0, VTL30 VT80008300, 7000 FE -REIN IEXER 6413663 12.'414 V185008700,..,, 1121 V1800043396 7000 1122vraso3apoo PLAY IDLER 6414221 124.5, 1/1800043300, 7000 FF-REW PULLEY 6383E31 (044' VT8500-8700 5-,300.850, 0500,,,REW nap 8681471 '244' VT1389, 6800, 97069900 PLAY IDLER 6861482 3.20 V11380, 68019700 6861481 VT 9900 VT9300-9500,9700 IDLER E81505 9.00 3.80... 1/199011, 6502, 680, 6800 IDLER 687043 VT11.33, 5163-64 FEREW IDLER 6886971.1..5 VT14, 16S, 17.19 34, 1/135. 38, 39. 52 61.62 VT65, 85.86, 88,330,640 1/11000, 110, 111, 113 FEREW ARM 6886792 1225 VT115, 118 119, 120, 125, 12B, 130, 135, 138, 145. 150 VT175, 220. 225, 250, 255, 258, 260, V7130 1/1400, 405. 410,413 FEREW ARM 6897094 1.30 VT414, 415. 418 420, 425. 426, 428, 430, 431,435 VT438, 450 498,510,618,520,525,526,520,535 1/1536. 540. 545. 546, 548, 570, 575, 576, 580.585 V1'588, VTM625, 626 630, 635, 636 640, 645, 646.51.80, 85 VT400, 405. 410, 413 CLUTCH RAos 6896951 8325 VT414, 415, 418, 420. 425, 426, 428,430.431,435 VT438, 450, 498, 510, 518,520. 525, 526, 530, 535 1115.36, 540. 545. `46.548, 570, 575, 578, 580, 585 mos, 5TM1325, 626 670, 535, 606, 640, 645, VT3009 TUP IDLER (LARGE) 2.50,... 513000 REW IDLER,,..,...,L5 1/1580. 6500. 6800 FS -BRAKE 8861505 4-444. 519700. 9900 113.00 FF IDLER 85321761 3.20 REW IDLER W321762 E425 AMSTRAD VCR7000 IDLER 150280 asp TVR1, VCR4500 CLUTCH 150873 E175 VCR4606 VC5200, VCR9000 1VR1, GEAR HOLDER 151284 63.50 VCR4600. VCR5200, VCR9000 TVR1, VCR4890 REF CLUTCH 3.50 R/CR5200 VCR6009, VCR6100 CLUTCH 153202 0 jo 9108450, VCR 9108900 CLUTCH 4.00 VCR4500, 91084600 MOD KIT (TAPE CREASING) (450 9108470 MOD KR TAPE CREASING FOR AMSTRAD 91084500, 4600, 4700 MOO 3516 T.UP IDLER PU47752 44.50 890.8901, 8904,9806 T.UP IDLER PU49280 E5.50 3538, 3533, 31/39. 3549 8930, 8931, 8940, 8941, 8942 3531 T4JP CLUTCH PLI51380 E225 3V45 CLUTCH ASSY PU57658 (11,50 3554 3556 3557, 8947, 8948 39144 T.UP CLUTCH PU56043-1-4 E2.80 1016011 TV OUTPUT MUOULE HM 6251 OUTPUT MODULE HM 6232 E550 Ea NC HR330. 3660. 4100 TAR IDLER SML PU49280 550 2.25 I4R7200. 7500, 7650 T -UP CLUTCH PU534624 887250, 7240, 7350, 7610 HR7200, 7300, 7350 REEL IDLER P048967 c2.60 46760, 7510, 765 7655. 7700 ROLLER ASSY PI,/4,9042AV. 00 1-167690, 7610.765650,0 NR7655, 7700 14R3300. 3560, 4100 T -UP IDLER LRG PU47752 E450 HR7200, 7606 7650 T -UP IDLER 8/51402.4 125 HR7655, HRD110, HR0111,1487303, 7350, 7610,1482720121, 225 HAM 10, 882420-121. T -UP CLUTCH PU55373 62.00 HRD225, 1482111, HRD110, HRD120-121. IDLER ARM P13553743-8 5185 HR0225. HR13111 5160170, 180, 210, 230 IDLER ARM PU58465 (2.25 HRD320, 376400. 430, 470, 530, 700, 750,950. 3000 148S5000, HRS5500 EIR0455, HRD725 CLUTCH MECH PU558822 "250 VIRD140, 150, 157,158 CLUTCH MECH PU57658 E1130 HRD160, 250, 267, 565, 568. 755, HRP50 HP,3300, H183330 REW IDLER PU46380 (6.00 483660. HR4100 HRD140, 150, 157, 158 TAKE UP CLUTCH PU56043-1-4 2.80 HR0160, 250, 257, 455, 565, 566, 725, 755, HRP50 HR0140, 150, 157, 158 TAKE UP CLUTCH P05604415 E2.80 FIRD160, 250, 257, 455, 566, 566, 725, 755, 66650 MATSUI 5%730, 735, 750, 755, CLUTCH 650400005 6,50 91X810, 820. 850, 880, 990 1/X730, 735. 750, 755 LIMITED POST LEVER C1-30 VX770, 800. 810, 880 ASSY 52(990 VX6/304., VX90 IDLER REEL 1.50 VX8004, 57(820 REEL UNIT CLUTCH 350 91X850, 91X900 ASSY IDLER 0350 MRSIMISII H5306, 307, 318, 319, GEAR ASSY 522800201 E625 1-16406 410,710 H5337, 338, 347, 349 IDLER 552801701 0,50 HS411, 412, 421, H$810, HS1320, 615830, HSE10, HSE20, HSE20. HSE30, HSE70 HS306, 307, 318, 319 IDLER 641034301 6200 116400, 410, 710 1.45347, 349, 412 IDLER 522902002 03.00 H51310,85820, 145830. HSE10, HSE20, HSE30, HSE70 IVITSUBISHICont. 45337. 33)3, :11,421 IDLER 552601801 350 05200 TAKE UP IDLER /LARGE) 64.50 515200 UNLOADING IDLER 4.00 F6200 REWIND IDLER 600 146306, 307, :'18, 319 SUPPLY REEL 522400101 320 HS400, 410, 710 DISK 146306, 307,..no. 319 TAKE UP REEL 522A09102 320 145400, 410, 710 H5320 DISK REEL DISK 522C06.301 0.00 145337.33&.01,421 REEL DISK 522P00601 E500 14.5300, 301, 362 310 PULLEY 522005201 225 HS308, 307,$16, 319 GEAR WHEEL 641071101 61.50 14540, 410.710 14,530, 307,+18, 319 GEAR WHEEL 641071001 150 45400,410,710 NEC 4830, N831.119332, N833 TAKE UP CLUTCH E225 41830, 4831, 0832, 141833 TAKE UP IDLER a 45 4820, 4831, 4832, 4833 REEL IDLER 2.05 N895 TAKE UP IDLER SMALL 5.00 4911, 61915, 4916,15917 REEL DRIVE PULLEY /5.50 49012, 90119014,9016, 9033, 9034, 9054, 9055. 9056, 9110 N9610, 9520,9530, 9610 oucnonal NV322, NV603. NV6138. IDLER UNIT VXP0453 72.75 N5777. EN7623,1915332. AG6100, 5200, WOO, 6810 NV300, 6153..M, NV340 IDLER ARM VXL0997 63.60 /11/366 NV300, 45330, 95333 IDLER UNIT VXP0401 60.75 45346 615366 NV300,95306 NV333 PLAY IDLER VXP0433 2.75 E5340, 511/386, NV8620 NV300, 66/332, NV333 ACTION GEAR VDG0016 0.60 NV340, NV366, NVE60, NV777, NV788, NV2000. N52010,3000, 7000 AGE010, AG4115 NV333, NV689. NV2000 LOADING GEAR VXP0325 E2.00 4873000, 6153900 NV300, EN312, 41/333 INTERMEDIATE GEAR VXG0317 9.66 NV340, 45366, NV600, N5777, N1/788, NV2090, NV2010, 3000, 7000 AG6010, 404+015 NV3,30, NV3Z3, N1/340 CAM GEAR VX60158 E1.00 NV366, NV777, NV788 NV236 NV250, NV280 IDLER ARM VXP0521 E1.70 N5200, NV370, NV380, 497430, NV450, NV460, 11/5465, N5470. N0490 NV630, NV650, NV730, NV780, NV810, NVA30, NV850, NV1370 NVG7, NVG5 NVG10, NVG11, NVG17, M/G 14, NVG15,191/016. 0018 NVG30. NVC400, AG1000, 401200, 1500, 1810, 2100, AG2200, 551405, 4911470 NV370, NV400, NV870, CAM GEAR 1/100I00 120 N5730, NVEM, NV/350, NVG10. NVG12, NVG18 NV730. NVI 0 IDLER UNIT VXP0581 62.50 NV2000,20103000 IDLER UNIT VXP0331 100 NV2000, 2010. 3000 IDLER UNIT VXP0329 1.00 /1 /2000, N5.4000 CAM GEAR 0200069 E100 NV7000, 7201 7800 IDLER UNIT VXP0344 1.00 NV7000, 720D, 7800 CLUTCH VXP0343 4.00 NV6150, 8202, 8300, IDLER UNIT VXP0245 0.90 NV8400, 86C23, 8610, 8620 69/8200, 84CD, 8603 PLAY IDLER VXP0243 0.90 4978610 8620 NV8620 CLUTCH VX00343 4.00 615332, NV690, NV688 IDLER VXP0488 3.50 NVG20, NVC21, NGV25 PULLEY UNIT VXP0767 E5.00 NVG40, NVC45 41/230, N5250, N5280 WORM WHEEL VXP0604 20 NV430, NV450, NV460. NV465, NV650, NV730, NW70, 40810 NV870, N5893, AG1000 NV370, N5380, NV630 IDLER VXP0523 E3.50 /411780, 55/830 NV370 CLUTCH GEAR VXP0595 100 NVG7, NVG. 1, NVG12 WORM WHEEL VXP0691 1.50 NVG14, /45(,15, NVG18. NVG30, NVG120, NVG130, NVG400, NVH7L) NV2000, 2013. 3000 LOADING GEAR 50G0035 0.60 4977030, 7207, 7800, 6350 NV230, 95250, N5370 LOADING GEAR VXP0520 1.50 NV430, NV450, NV460, NV630, NV730, 45370,190780, N5810 6A9330, NVENO, 41/07, 615010,190012, NVG15, NVE.30, 400120 NGV130. NVG400, 61/1.170, 401000 NV230, NV250, NV260 CLUTCH GEAR 12.50 NW80, NV430, NV450, NV730, NV770, NV810, NV870 NV890 NVG7, NVGAI. NVG11, M1NG12. NVG14, N5015, N5318, NVG30 NCG120, NVG130, NVG400, NVH70, AG1000 NV230, NV250, NV260 UMBER ROLLER 150 NV280, NV330. NV333, NV340, NV366, NV370, 41/430, 6/450, NV460 NV465, NV630, NV650, N5777, 50/780. 6/7148, M/810, 611/830, E0850, 4/870, 41 0, NV2000, NV2010, 7200, 7800, NVG7, NVG10, NVG12, 615014, NV015, NVG18, NVG30, NVG120, NVG130, 4504610. NVIR70, 401000 ONON MULTIPLE /MODELS IDLER 8504200004 150 MULTIPLE MODELS IDLER 8504200005 E650 120 VH1, VH2A IDLER IDLER VH1, VE124 120 VH1, VH24 GEAR DRNING E060 1.941, VH2A INTERMEDIATE GEAR 60.65 VC150. VC140, VH200 IDLER 150 5H201,1/1-1235, VH212, VH250,101254, 01-12813.118300. ch,303. 00312 VH404. VH555, VH700, VH704, V14708, VH712, VH737, VH844, VH900. \I H3 VH33 SAISHO 5R605, 58E00, VR900 CLUTCH 850420000 650 5R1100. 1206 1600 25E6 3200, 3300 VR3500. 3613), 3600 LIMITER POST 1.30 58110,1200, 1600, 2500 3200, 3300, 3500, 3600, 3700 5141365,011860, 50900 IDLER 83.50 VR2500.3200, 3300, 3500, 3600, 3800 VR706, 58005, 1/8905 IDLER 150 SANYO 1/1481110, 1150. 12120 IDLER 14366629-14730 E5.00 514141303 9500 VIC5000, 5150, 5009 FRREW IDLER 143.0.7419 20001 E100 V1C8500, 1/1CM10, M11, M20, M21, M30, M31, M50 vit5300 143.0-5511-01400 120 FF ROLLER ASSY 143-65471-00200 220 VTCM10, 1511, M20, 5421 REEL DRIVE PULLEY 143.06671 10350 5,00 5r61130, nal, 1050 91148210,2300, 2500 IDLER 6130374895 6500 911482702 54C5000, 5150, 6000 PULLEY 143-0662101201 E520 VTC6500 VIC6110, N11, M20, M21 PULLEY 143.0-662T-10350 E5.50 5TC/1430, N31, M50 VEIR3100,E300, 3310 REEL DRIVE 1430.662T-15621 4.25 VH83400, 3700, 3800 ROLLER VHR13599,VHR3700 91875800, 91TC5300 LOADING ROLLER 1410-6615 03800 E1.0 VTC5400 91103000 FWD LIMITER 3.50 VTC3300 IDLER E5.00 SHARP IDLER ASSY NIDL0005GE22 01.50 IDLER NIDL0006GEZZ 1.50 VC800, 651 681, 692 IDLER ASSY NPLYV0107GEZZ E6.15 910694, 685. 893,699. 700, 783, VC6FR, V0653 9107300, 5(7706. 7750 PLAY IDLER KIT NPLYV0041 1404101007 a 50 PLEASE PHONE US FOR TYPE NOT LISTED HERE AS WE ARE HOLDING 5000 ITEMS AND QUOTATIONS ARE GIVEN FOR LARGE QUANTITIES. Please send, 1 P&P and VAT at 171/2%. Govt, Colleges, etc. Orders accepted. Quotations given for large quantities. Please allow 7 days for delivery. All brandare new and boxed. Prices quoted are subject to new Components. All valves stock availability and may be changed without notice. TV & video parts sold are replacement parts. TELEVISION MAY 1994 461

. VCR PINCHROLLERS Cont. Mum Cont VC397, VC481, VCA83, VC486. VC496, 60181,1/C5132, VC5133. VC5115, VC402, VC471. VC473, VC471, VC500, VC571, 70573. VC584. VO5W20E, 7041031 0_50 V0351, VC881, VC935. VC750, VC790, VC781 VC785, VC787, VC793, V0 VC800, VC682, VC684, VC893, VC619, VC700, VC772, VC7810, VC782, VC7822, VC7282M1Q. VC783, VC7133. V0786, V0300, VCF3, VCA100. VCA102. VCA104, VCA202. VC.4303. VC.A211. VCA234. VC..6501, VCA602, VCD0301, VC13602, VC51852. V09881 12.50 VC220 Eno SAISHO V92000, VC3800 1250 ' SOlARA GNI T NO.6 HINARI VXU 10.9/0 VXL7, VALE, VX09 010 VXL4, VXL35 070 VXLS, VXL6...O.! VX13, VXI20... HITACH VT11, VT14.1/117, VT19, VT33. 7734. VT35, VT* VT39, VT88, VT165, VT330 000 VT5003, vrssoo E. ue 717000, VT8000.1/T8503 CCM VT690, VT/3500, VT6800. VT9300, VT9500, VT9700, V19900 10.60 5152, VT61, V162. V164, VT65, V196. 1/1640 Etso VT3000 El SO SV0000 250 577300 SV8200, 508300. SV9200 SC9300 17-50 577400 51/8403, 578420, 5713500, 51/9520 5C8550. SV8600, SV8620. SV8700 SV8710, 503720, SV8803, 5788305V9500, SV9600, SV91310 2.50 ITT SV9000 5V8100 f2.50 VR3605, VR3905, VR3935, VR3954. VR3985 $APASUNG VR3913, VR3914 SV716SV717, V9510, V13520, V8610, V8618. V8617,18819, 03620. W3626 VBED7.513629. V8900, V9910, VI510, 14520, 51611. V1616. VI121,14626, VI903, V1910. VX610. VX520, VX616. 1/3(617, VX619, VX626, VX627, 1/X629 a.50 SVX301, SVX303, 57X305. 01.007, S7319. SVX322, VE1710, V6770, V68220, VB97I, VB8225, VI730, V1770, V03929, VR3968 VI790, VI8220, V18225, V1,8220, VX710, VE13907 7X712, VX720, VX739 WOK 7X770, VX791, VX8220, W0335, VX970, VX971, JVC 731972 0-50 H03300, HR3330 1103360. VT100, VT110, VT111, VT113. VT115, VT119 VT120, VT125, V1128,171130, VT138. VT145, W150, VT175,1/1220, V1226 V1250, V1225, VT258, VT260, VT130 (150 0.90 MOO VP3828. VR3906 V03316, VR3926, VR3946 VR3948, VEL3976, 503986, VR3995, VR3997, V03977 10.46 VR3927, VR3928, V03977 11.40 V03993 V03994 099 VR3963 1:0,06 VR3912 11.50 VR3917 050 use TOSHIBA V55. V57 E.,E 1,50 585 V5250, 65293 0_30 V33. '1531 "se, V9603 V9600 1/61. 563.1/66. 766.767 MI5 150 TRIPLOIS UNIVERSAL THORN 9300 SERIES 1400 050 PHIUPS G9 16_50 08 520,560 6550 KT3 f4.00 DECCA 100 SERIES 650 120/130 6,0 ITT CVC 2000 MOO 0/C 825!0., RANK T2 0A,.." ', UNIVERSAL TO FIT ORION Cont. NVHL, NVHML V11250 VH254 614412 V14512 VH530, 55535 V14600, V14630 VH635 V14640, W4666, V11704, V11730 1/14735 1/14744. VI4770, 1.61774. VI1820 veeee veeso, yews, V14893, VH900 V11974 VH1012,1.411204, 1641440 V141500, VH1880, W41800. VI42004 V143030, V143050, VH3060, 0/4010 V1 4F26.8220. VH50113 VH5015 VHF2A. VP220. VR2948, V82949 1/117956, V82957, VA2966, VR29193 VXL20, W(125%0030 PHILIPS VR6540 REEL MOTOR LOADING MOTOR 890 VH2E9, 714330. VH404, ii,0, Susi* VR705, VR805 REEL MOTOR 1350 20AX TUBE ES 00 VR905, V02000.93AX TUBE E1300 SAMSUNG V8510 REEL MOTOR 111.00 DIODE SPLIT TRANSFORMER LEADS TO FIT CHASSIS CODE CTX TYPE 050 G11 TYPE KT F2-50 f2 50 VIDEO MOTORS AMSTRAD VCR 7000 REEL MOTOR, 00 AMA AV77 CAPSTON MOTOR 0590 A" VP7100, VS9303, VS9500, VS980C, CAPSTON MOTOR 121.00' VP7100, V59303, VS9500,1/09800 DRUM MOTOR 1950 SANYO 4-523V-10800 IRM11) REEL MOTOR 77C5000, VTC5150, VTC5300 6.30 vrcseoo, meow, vrcesoo vrc0000 CAPSTON MOTOR 05-00 SHARP RMOTV 1008GEZZ REEL MOTOR 113.50 VC200, VC381. VC384. 703669 VC386, VC483, VC3305, V03381, 059100. VC9303 VC9600. VC9700 0540TV 1007GEZZ REEL MOTOR 11600 VC300, VC402, VC471, VC477. 70481, 70482, 1/C.493. VC496, VC500, VC571, VC573, V0581, 5C582. VC583, VC584, VC5F3, VC8481, VC8581, 707822, 704102 CAPSTON MOTOR 13200 VCA202, VCA234, 704602 ITT PART NO' 13/1074 USED ON: CP0200, 0211F, 0323 03230, 0341f15 0346F. 0351, 0361/1, 0361, 0381/1. 9350, CT0600,0500R/T. 05007 PRICE: 01.50 PAFIT NO: LFC 005 USED ON: CVC40 PRICE: 0.25 MATIMIISAISHO USED ON: MATSUI-2190, SAIS140.FST21337X PRICE: 0.50 PINUPS USED ON 030. 035, K40,103, KTO PRICE: 1190 PMT PART NO' NO: (POWER SWITCH +REMOTE SWITCH) USED ON. KVI612 MK1, KVI1312 MK2, 001614, 012062 KV2056.KV2082, 10/2056 KW212. KV2216, KV2252, KV2256. KV2704.10/2705, KV27013, KV2752PE3, KV2756PE3, KX2OPS1 KX20PS2,10/27PS1 PRICE: 0.50 PART NO: (POWERSWITCH) svvrrai 4 REMOTE USED ON: 072022, 002024 PRICE 1350 PART NO: 155482011 (POWER SWITCH) USED ON: KV1810 MKI, IG/11310 MX2, 071820, KV1622, KV2000 MK1 PRICE 17.50 PART NO, 156496711 (POWER SWITCH 260100 USED ON: KV1403, K1/1440, KV2040, KV2010 PRICE, 12.00 PART NO: 156258800 (POWER SWITCH 21mm REMOTE SVVITCHI USED ON: 072020 PRICE: 0.00 PART NO: 16627740021 (FUNCTION SWITCH/ USED ON: KV1612 MK1, KV1612 MK2, SONY FR3660,1404100 1130 AWIMPAIC BHF 11000 CAPSTAN MOTOR ram swum HI17200. HR7300 to., N850 REEL MOTO,' 19 00 SLC5, SILC7, sax, 5I3000 FM350. RM362. FM355 050 44R7350. 4I87600.14E17619 FM361, FM362, FM363. FM364 1250 BLALINPUNKT 354049606 1407650, 907656 FM391. FM392, FM394. FM461. 4075 RTV211, 011/214, REEL MOTOR 13 OE 70360, VK331 CAPSTON MOTOR 1467700 01.00 0.75 114462, FM464, FM468. F64561 exso 077325 LOADING MOTOR 5.00 1030110. HM3111,1180120, 111002, 55303V1005 703301. 1400121, 4480225 VK300, V1002 DRUM MOTOR 119.50 SONY 10.90 DECCA W303,1/1005 V1(308, 703301 SLC5, SLC,6, 1100140,1460150,18113157,1160158 SLC7, S1.3000, VR8300 REEL MOTOR 518000.KV2756P63 11900 S18090, SL8203. S19600, SL36, S137, HR13160. HRD250, H00257,1180455 HRD565, H00566,110725. HR0755. 180101 TOSHIBA... 51.110. SLTBME, SL77ME V55, V57 CAPSTON MOTOR 12.40 HAP50 to ao 8V0330, VBS3500. VBS7500. I L... SLC9. SLC.20, 5LC24, SLC.33. SL033,, V6I, V63 LOADING MOTOR SLC44, SLH4100, SLF1, 504719 st.e2s. 1400170, H00180, FR0210,1460230, VBS7600, V893900 REEL MOTOR 500 I. --`` V71, V73, 1/74 REEL MOTOR 1050 SLE30, S0F60, 504100,502009 SLF6CPS, H140300, HR13320. H00370, HR0400, FERGUSON ' V75. V81, VEO, 785. V86, V93, V94. SLF90E, ail 150, SWF-850, SUM. HRD430, MR0530,1400700, HRD750,,. PU 45409 CAPSTON MOTOR at% V300, V500, V700, 01.90 SLK95, SLT2OME. SIT3OME, SLT5OME 12 50 H00959 HRS5000. HRS5500... W1, W3. V74 CAPSTON MOTOR 6960 840103, BAAC209 8MC500 CISO MATSUI W5, V81, V83, V85, V700 SLV201, SI.V202, SLV301,SLV302. V86, 1/93, V94 CAPSTON MOTOR 0 9.00 VX850 0.75 SLV401, SLV402, SLV801, 5LV802 C2 50 TOSHIBA OV80, DV90, DV96, SC97, V200. V201. V202, V206 V207, V300.1/303, V500. V509, 555, V57, V61, V63, V65, 1166. /187,7700, V71, V73, V74, V75, V77, V81, V83, V851635193. V94 we V5470, V5480 mso V91, V951 (Pressure Roller Assembly) 050 VCR BELT KITS MITSUBISH1 145200, 95318, 95319, HS410 12.00 HS300, HS301, H5332, H5307, HS310 11.50 H1303,115304. HS306, e5320, PG330. 115400, HS700 150 NEC N820. Ners1, N832, N83 51-00,," N895.-1-4 PVC2300, PVC2400 HR3300, HR3660. HR4100, NCO, 3VO1, 31/16. 3022, 3292, 8900, 8901,8902, 8E03, 8904. 0608. 8909, 8912, 8922 PU 55371V CAPSTON MOTOR E28.00 3735, EV36. 31/38, 3V39. 8943. 8944, HRD110, HAD111, 1400120, HRD121,14R0225 PU 46414 DRUM MOTOR 61950 ViR3300, 903320, HR3330, HR3360, HR3600 403660. HR4100, 3V00, 3701. 3V16, 3V22, 3292 8900, 8901, 8902, 8903. 8904, 8906, 8909,8912, 8922 PU51281V REEL MOTOR 119.00 229 3/30, 3731, 3732, 3739.8930, CASSETTE HOUSING GIUMADA VHSDP1 CASSETTE LIFT ASSEMBLY 15.00 KV2052, KV2066, KV2212. KV2216, KV2216, KV2252, KV2256, 012704, 072705, 072706, KV27152PE3, PRICE: 0.50 PART NO' 146136100 (FUNCTION SWITCH) USED ON: VARIOUS PRICE: ELM VIDEO LAMPS UNIVERSAL VIDEO TAMPS 9V et),,,,,, 010mrn WIRES) 0.30 PANASONIC VIDEO LAMPS 0.50 SHARP VIDEO LAMPS 1050 HITACHI 5381682.,-,. L,... VIDEO LAMPS Et 35 VHSVJ2 126.00 VIDEO SENSOR LAMPS FERGUSON & JVC 3638. 31/39, 8943. 6944.8951, 3635. 3V36. 3V49, HRD110, H00111, 900120, I003121, H11D225 12600 AIWA, AKAL ALGA, AMSTRAD, BLAUPONKT, FIDELITY, FISHER, EWITSU, FUNK, GEC, GOLDSTAR, GRANADA GRUNDIG. HINARI, HITACHI, ITT, JVC 0100 SERIES). MATSUI, MITSUBISHI. NEC, ORTON, NATIONAL PHILIPS, 5415140, SALORA SAMSUNG, SANYO, SHARP, SIE ME N, SONY, TELEFUNKEN, THOMSON, FERGUSON, NATIONAL 8931, 8941, 9342, HP7200,1407300. 31142, 3743, 3744. 31/45, 31/48. 3753, 3754. 3156, 31/57, 8945 8947, ARAI NV300, N1/332, W333. W340, 273186 136 H07690, HR7610, 907650. HR7655 9948. HRD140,14160141,14613150, V17100, V59333, 759500, 79700, 27600, NVC438, NW77, 27788, 900457,1400158, 1400160, HRD250,... FERGUSON & JVC VS9800 11.30 406010, 406015 HRD257, 900455, HRD5135. 4/00566, TOSHIBA.1... PU 56635V CAPSTON MOTOR VS1, VS2, VS4, VS5. VS12. VS15, W2000. W2010. NV3000 1150 H140725.10413755 06.00 (SENSOR LAMP CODE NO. 70051 3V58, 3V59, 3V64, 3V65, eeso, 8951. ULM VS53, 1.418,1/56. V58, V59 C1_00 8948, 8950. FV108, FV12L. FV13H, AIM. GRANADA I1957321. HITACHI VS10 10 11.90(CASSETTE NV7000, NV7200, NV7503, NV7800 095 P/108, FV110, P112L,11/1314, FV2013. 65 NV8600, NV8610, N58820 FV14T, EV208, FV2113. 47221. 4826, (VT3000), ITT N03912NRP38331, JVC OM FV216, FV221, MR017911110180, HR0230. NV230, NV250, NV2613, NV293, NV370, FV395. /0113230, 4100430, 4/00630 12600 (H0220333033339 HA3680). MITSUBISHI AMA 1400370.1400430 NV380, NV430, NV450, NV463, NV485,,.,,,,,,, 3V58. 3V59, 3V64, 31/65, FVIIR, ITHHSc2904 TELEFUNKEN IVR510, VR519610), AV66 PU 59636W REEL MOTOR '-2 W630, NV730, NV770. NV780, NV810. E'.."' 8959 8951, HRD170,HRD180, ON IVK31XV305/30633011, FERGUSON AW7 3V513, 31/59, 3V64 3V66, e95o, 9351, Cl.,,..,,,,, NVE00. NV850, NV870, 501000, 14130370 06.00 (3V00/3V163V22/3V24/3292A390061130163902/ G700... FV108, FVI 1R, EV121.., EV1311, FV14T,.1 4. AG1200, A01500 89036909/8912/8922/99251.1 44. 10.30 G900 FV208, FV21R, FV22L,14613170, FIRD193, ITT LAMP 9V 80mA 310mm WIRES PHIUPS /1110230, 900370, FRD430. 900530 VR3606 VR3905 120.19 CUTE NO: VL01! ALIA VR84694/116920 MOTOR 1313110 11.70LOADING VR3616. VR3926,012946. VR3948, VCR3030X, VCR4000 BLAUPUNKT. ORION 1941/241, NATIONAL 130 V145640 E1.0, 364.2. 243, 3744, 3V45. 3V18. 31153. VR3976, VR3966, VR3995, VR3987, 472000, NV2010, 273030, NV8150, NV8200, 3754.3765, 31.56, 31/57, 8945. 8947. VR8948 AMSTRAD 01/195, DV190, DV286, SV4613. DV471, 038,46 NV13400, W9930, NV8610, NV86201. SHARP 8948, FIR0140.1100150, HAD157, TV14123, VCR4600, 7004700, 7005200 El SO DV562, DV571, DV761, VR6163, VR61132, H00158.1100180, H013250, HITID257, 7007000 00.80 706185, VR6295, VR6290, VR6291 PUITIONAL 0/C2300, VC8000, W6200,1/03300, VC7300, VC7700, VC9000, V033001 1440455. HRD5135, HRD566, H00725, VCR6000, 7006100 1,,,, VR6293, 016362, VR6367, VR6390 W730 19/50 "339 (CASETTE LAMP ev mane CODE NO: V1.132) VR6391. V136393, 706467, 706468 14110755, HRP59 R73Af VR6470,1106561, VR6570, VR6581 P1.160201V CAPSTON MOTOR 34.00 NEC AKA (VS101, GRANADA (795XJ31, ITT AUTHENTIC V146670, VR6676. VR6760, VR6761 HRD330, FIRD330. FIR0337, 060400. 4830E G. N831EG, 60332. N833EG f24, 00 R413693, VF43994), JVC (HR2660,1467600, N850 6120 VR6762, 506870. VA6970. VR6975 HAD520,1180530,4010700, HAD750, N895 Expo 7610, NR7650, H076561, TELEFUNKEN I70530, 7.0535 56539,1/0550, VR630. 1.708601, DECCA VR72588.17E168584, 70016581, 1400950, FV14T PHIUPS THOMSON (7309, V316, V357, VK309, 70411, 711,9300 1.20 7R92583 14140140. 400150 CAPSTON MOTOR 00.00 CASSETTE LIFT ASSEMBLY 7X80001, FERGUSON 13731,8841, 89421 E0.90 V81-194114504( 090 VR5442 VR6542, VR6843, VR6943, /010250,14110515. 1400586 68120366 11.00 (CASSETTE LAMP 9V 80mA 310mm SKE0 VR44S139, 070 3V29, 8130 CAPSTON MOTOR 3000 FERGUSON CA/186, 195, 286, 471, 562, 761, CODE NO: 9L06) 8930,831 VR6160 6182. 6185, 0136285, 6293, 3292 200. 3701, 216 3722, MOO, SAISHO AUTHENTIC /9660), DECCA (70831101. 8901 8932, 8903, 8934, 8936, 8909. VR6291, 6293 6362. 6367, 6393. VR2000 1 GRANADA (VHSTJ3NH5W31,1/1456.13), ITT 10-90 4012 8922 "35 703800 f", VX12. VXL4, VXL20, VXL35 V06467, 6468, 6479 6561, 6670, 3723 8923, 8924, 8929 10.85 LOADING MOTOR 900540, N83913, 3914, 3963), JVC (H87200, 7300, 111.00 7350,7700), TELEFUNKEN I70450, 529 529, 3V29 3430, 8930, 8931. 8940 1990 SALORA VXL20 REEL MOTOR 549, 620, 640, 920, 19201, DiOMPSON "3 5 TELEFUNKEN 3731 3V32, 8941, 8942 ED 85 5V0500 01.00 V4106 56.308, 309, 312, 410), FERGUSON 3735 3736,3738. 31/89, 3749. SV6600 11.50 leracii 26 90 3V23., 3V29, 3V30, 8923, 9924. 8929, 8930, 8943 8944 0 70 SV8000 1120 5578154 CAPSTON MOTOR f15 P, 114061E0N 9331.89401 10.50 31/42 31143, 3V44, 3V45, 3V48, SV8100 cose VT52. 61. 62.13, 64. 65, 640 V320. V321, V323, V326, (CASSETTE LAMP 9V 90mA 210mm SKEO 3%753. 31154, 3755. 57, 8945, 8947, 6948 0 65 SV8500, 5178520. SV9500 rue VT3000 CAPSTON MOTOR 21 00 V4200. V43,03 CODE NO: VL071 126 00 31/58, 31/59, 3V64, 3765, 8950.8951 SV73CO. 5V7400, SC8409 508420, VT3CO3 DRUM MOTOR 19 50 V342, V343. V352, V353, V3043 V364, GRANADA (VHSAY3). SHARP 000200. 381, FV10, F011, FV12. FV13, FV14, FV20, SV9200. SV9300 1120 rrr V368 14210 14230 V42036 74400. 334. 365, 386. 3613, 390,393, 9300, 9500, 97001 0970 FV21, FV22. 4726. 1730, FV32, FV33 0105 SAMSUNG VP3826, VR3906 LOADING MO TOR 6600 V5500 V6900 191.40 MOO (CASSETTE LAMP 5V 115 r0a COOF NO' ROELITY SV16, 0V717,V618, V1621, V1626, 503016,1/113926, 1/03846 063948. TOSHIBA 5:11;, HI S200, 701600, 7006100 OM 7X616, 7X626, 7X627 coal V83075 VR3197, 086948 755 VS7 126.00 070100 180 VE1520, V13610, V8616, V13617, V8619, VR3912 CAPSTON MOTOR 21.00 066 V66 12600 V6620.143626, VB627, V8629. V1610, VR3912 DRUM MOTOR 17950 NATIONAL LINE OUTPUT 6E01000 61.00 V1520, V1611, VX510, VX520. VX617. VR3305, VR3906 CAPSTON MOTOR 11950 TRANSFORMER V83935. VR31354, VR3986 531619. VX629 1.00 1 T oo V13900, V8910. V1900, VI910 1.10 VR3913. VR3914 REEL MOTOR 11900 1.413993, V03994 RIMER VeS7000 046 0859300 1120 FVHP520, FVHP530, FV11P420 0,60 FVHP615, FVHP6113, FVHP620, FVHP622, FV14P710, FVHP711, EV141715, FVHP716, FVHF720, FVHP721. FVHP722, FVHP725, EVHP730, FVHP830, FVHP840 17.00 FVHP936, FVHP906, FVHP907, INHP908, FVHP910. FVFIP911, FVHP915, FVHP916, RO1P9113. FVHP5000, FVFIP9306. FVHP5050, FVHP5075, FVHP5100 Elmo 780339, VBS7500,VB.57600, VBS9900 1100 V853500.0.75 FUJITSU 145763. VX715, VX7200 El 60 FUNAI VI, V25, VCR4603, VCR4800, VCR5200, VCR5400, VCR6600, 7006600 f2 10 7004630, VCR5840, VC85963, VC,F16800, 706680 E100 14P3000. 1/158000 1.60 4005 V4004 " ' GOIDSTAR GHV1221, GHV1232, GHVI241, GW1242, 6W1243, G16/1244, GHV1245, GHV1246, GHV12413, GHI/51, G1663000. GIB/8210. GHVB215, BCP4100, VCP4130 0.08 610/1290, GHV1291, GH1/1296, GHVI 296. VCP4200, VCP4330, VOM301, VCP4305. VCP4306, VCP4310, VOM311. VCP4315, VCP4320, VCP4321. VCP4325, VCP4326, VCP4000 6141/1247, chvezoo 11.50 SANYO V7C5000, VTC5150, 770E000, VIC6500, VTCM10, VCTM11, VCTM20, vitse21, VCTM30. VCTIA31, VTCM50 nos vraixo, vrc5380, y.,0540,3,,,,,i58,,0 0.1 AG 7705500 6096 VT03100, VTC9300 E2.20 VTC1100, \ ITC1300, VTC1500. 51941100,164R1150,5}101200. VHF11300. VH01500 10.80 VH03100. VRR7300. VM17500. VHR7700 " SHARP VC200, 703181, VC383. VC384, VC386, VC31313, VC390, VC393, VC2300, 708381. VC9100, VC9300,,... VC9500, 709700,...r.,. VC6300 F.R9 VC7300. 507530, 707700 E1-52, VC11300 -.-"' VC300. VC387. VC471. VC473. VC477, VC481, VC483, VC486. VC488,,, V03481. I... VC402, VC500. VC571, VC573. VC581, VC582, vcseo, vcsae, VC.565. VCSF3 10.90 VC600, VC661, VC681. VC682, VC684, VC685, VC6113, VC699, VC700, VC772, VC781, VC782, VC783, 50785, VC786, VC793. V0100. VC7810, VC -7822, VCOF3, VC6V3, VCA100. V04102, VCA103, VCA104, 504202 /0.70 VC7750, VC2000 1150 SONY SLC6. SL36ES, Sum SLT6ME 1 40 SLC5 SLC7, SL37E, 50774E El so six.9. 1.65 SU3000, SLOW, 51,8203, SL8600 200 MITSUBISHI 286P02801 MOTOR REEL SPOOLING 13500 145300, 301, 302, 310 288P02906 MOTOR REEL SPOOLING 0100 95303, 304 320, 339 700 288P03401 MOTOR REEL TAKE -UP GEN 01,00 HS303, HS320. HS700 NEC N866G, NE3IEG CAPSTON MOTOR 61950 N832. NEC3366 N895 LOADING MOTOR E8,00 NATIONAL MYR 1351/51. REEL MOTOR 113.00 NV300, NV332, NV333, NV340. NV366 VEM0212 MOTOR REEL GEN 13000 W73014V770 VE140217 REEL MOTOR 19.00' 277000 MAX 13V9LP CAPSTON MOTOR 00.00 NV300. NV332. NV333, 60/340, NV366, N5800 1 ORION NEWIL. VC150. VC180 REEL MOTOR 03513 VH201, VH205, VH212, V11250, VH254, VH229 VH3, VH309 V14303, VH312, VH700, VH704, VH708. VH712, VI1770, V14774. VH7M VH820,01844, VH930, VH974, 1/111000,17111204.1711200, V142004. V142204, V113030.1.013059 VH3060, VH4008. VHF2A. VP200, VR2948, VR2949, V112956, VR2957 PANASONIC MODE SWITCHES NV2000, 2019 7000, 7200 7800 IVSS00481,,,,cp NV230. 260, 433, 810, 8-70, 2300, 4300 (VSS0110) fzu, E3,00,Nv30V832,(VAS". 34,01re,. 778 (VSS04560) GOO N7021. 25. NVH65, NV1380 (755017541 use ON/OFF MAIN SWITCHES GRUNDIG PART NO. 2970329102 USE0 ON: C7500. C7500Tr, C8600, C8502, C8712, 03714, 07934,11/160190, M66-19249, M70.195 P40-345, ST66-1602,756340, W722 PRICE 1325 TLF 15542' 625 00 TLF 14568F (26 on TIE 145671 126.00 TLF 14715E 127 00 TLF 147496 20.00 TLF 66390 E28 00 CASSETTE DC MOTORS 6V 540Toi, El 70 9V MOTOR E1.70 12V CW MOTOR E1.70 121/ CON MOTOR f 1 70 13,2V CCW MOTOR 290 CASSETTE TAPE HEADS MONO HEAD E0 9c STEREO HEAD 11 1 0 MINI HEAD C2-30 AUTO REVERSE HEAD 1260 GRAN DATA LTD K.P. HOUSE, UNIT 15, POP IN COMMERCIAL CENTRE, SOUTHINAY, WEMBLEY, MIDDLESEX, ENGLAND HA9 OHB Tel: 081-900 2329 Fax: 081-903 6126 462 TELEVISION MAY 1994

VIDEO HEADS AKAI VSF600, VSF650 3800P VP7100, VP7200, VP77 1500P VS155, VS165 2600P VS20, VS22, VS24, VS25, VS26, VS27, VS422, VS425, VS426, VS427, VSF10, VSP8, VSP9 1700P VS240, VSP82, VS202 1500P VS33 2600P VSR9 1700P AMSTRAD VCR8800, VCR8804, VCR9340 2400P DD8900, DD8904, TVR4, VCR6200, VCR8600, VCR8602, VR8700 1300P VCR8603, VCR8604, VCR8704, VCR8714 1350P BAIRD VC14L VHS82 BLAUPUNKT CR1000, CR1200, CR1500 CR1800 RTV321, RTV322 RTV330 RTV333 RTV33B RTV348 RTV404, RTV414 RTV635 RTV640 RTV750, RTV800, RTV900 RTV810 RTV910 JVC HRD330, HRD337, HRD440, HRD660, HRFC100 JVC AND FERGUSON 8902/8903/8909/8912/8922 8923/8925/8929/8935 8931/8933 FV43H, HRD860 VC141L, HRD190, HRD610 FV44L JUST ARRIVED 3000P 7000P 4650P 4100P 1700P 2300P 1000P 2800P 2700P 3000P 3000P 3000P 3500P 4400P 4500P HRD637, HRD641, 2200P 1000P 650P 750P 3800P 3050P 2200P BR1600, HRD142, HRD156, HRD152 1550P BR6200 720P HRD154, HRD217, HRD321, HRD350, HRD521, HRD522, HRD525, HRD527, HR0550 1700P HRD580, HRD620, HRD650 2900P FIDELITY VR900, VR910 1600P FISHER FVH0140, FVHD40, FVHP1, FVHP10, FVHP20 FVHP40, FVHS10 1600P FVHP200, FVHP210, FVHP300, FVHP310 2100P FVHP500, FVH P5100, FVHP730, FVHP830 1200P FVHP980 2500P FUNAI E1100, VIP5000 1200P VCR5840, VCR8007, VIP2500A, VIP3000A, VIP6000, VIP150 2200P VCR4530, VCR6000, VCR6100 1600P VCR8103, VCR600, VCR6100 1600P VCR8103, VCR8107 2200P VIP300A MKII 1900P GEC V4005H 2000P GOLDSTAR GHV1232, 1233, 1241, 1242, 1243, 1244, 1290, 1291, 1295, 1296, 1891, VCP4130, 4300, 4301, 4305, 4306, 4310, 4311, 4315, 4316, 4320, 4321, 4326 1650P GRUNDIG VS456 1700P SE6110, SE9100, TVR4510, TVR5510, VS500, VS510, VS5180, VS6190, VS700, VS900 1800P VS790, VS930, VS940 3800P MVS660, SE6160, VERONA, VS660, VS6690 3500P MVS710, MVS720, MVS910, SE9120, VS800, VSB10, VS910, VS920, SE7120, VS710, VS720 1800P VS160, VS740 4400P VS170 4600P VS680 4600P HINARI VCR34H, VTV200, VXL90 HITACHI VT15, VTP10, VTP30 1100P VT16B, VT260, VT498 2700P VT570, VT575, VT576, VT580, VT585, VT588 3400P VT5600 1200P VT60 1500P VT660E 2600P VT6700, VT6800 1200P VTL30 2100P VT522, VTM620, VT14622, VTM720, VTM722, VTM822 2000P VTM725, VTM726, VTM72B 1600P ITT VR3520, VR3701, VR3719, VR3720, VR3721, VR3759, VR9720 2000P VR3730, VR3731, VR3749, 2700P VR3907, VR3908 1600P VR3918, VR3919, VR3938 1800P VR396B 7000P VR3984 2300P VR3958, VR4993 650P VR4913, VRP3833 650P LUXOR 9245, 9251, 9254 1225P 9255, 9256 2150P 9270, 9271, 9273 1800P 9272, 928217 2700P 9252 2500P 928017, 928077, 928097, 929107, 929117 1700P 9253 2500P 9281 2700P 9284, 9295, VR3701, VR3721, VR3731, VR3761 2100P MATSUI VX600 1100P VX750 VX990 MITSUBISHI HSE12, HSE22, MX1 2400P HS411EZ, HS411GZ 2900P HS273 1700P HSB10, HSB20, HSE10, HSE20, HSE21, HSE41 2200P HSB11, HSB21 2200P HSB30 2400P HSE31, HSB31, HSE32 2800P HSE50 3300P NATIONAL NV8050, NV8051 2800P AG1000, AG1050, NV260 1650P AG6010, AG6015 2500P AG6840 2400P NV200 850P NVD80 5000P NVF65, NVH75 3400P NVF51 4200P NVG19 2300P NVJ33, NVL21, NVJ30 1800P NVJ35 3000P NVM1, NVM3, NVM5 4200P AG2100, AG2200 700P NVF65 3200P N.E.C. DX2000 3400P DS6000 3500P DX1000, DX1600, N9040, N9053, N9055 2000P DX4000, N9610, DX3000 3200P N9052, N9530 3400P N9110, N9120, N914C 2700p VCP1 1700p PVC2300, PVC240, PVC740, PVC744, PVC760, PVC764 1600P SAMSUNG VM1560, VN1561 SANYO VHR7900 SHARP VC585, VC685 VC9OET VFH815 SONY SLV373UB TOSHIBA V660 V8801)AS V700G V500G, V509G V9680 V300G, V301, V305, V309G V61, V63 V110, V120, V130, V140, V210, V220 TELEVISION ON/OFF 1850P MAINS SWITCHES 2200P 3600P 2300P 3900P 2800P 3000P 2350P 2600P 3700P 2500P 2900P 2550P 1700P 1800P Baur, Normende, Nova, Pioneer, Quelle, Saba, Salora, TEC, Thomson & Vega 375P VIDEO MOTORS HITACHI VT11, VT14, VT15, VT16, VT17, VT19, VT35, VT39, VT57, VT88 (capstan motor) 3100P BANG & OLUFSEN VHS65, VHS90 (capstan motor) 3100P LOADING MOTOR UNITS ITT VR3605, VR3905, VR3955, VR3985 1500P VP2826, VR3906, V43926, VR3976 1250P VP3946, VR3906, VR3948, VR3986, VR3995, VR6948 1500P JVC HRD110, HRD111, HRD120, HRD121, HRD225 1500P HRD140, HRD150, HRD157M, HRD158MS, HRD160, HRD250, HRD257MS, HRD566, HRP50 1250P HRD455, HRD725, N895 1500P SABA VR6005, VR6014, VR7004, VR7011, VR8011, VR8014 1500P VR6006, VR6007, VR608, VR6009, VR6018, VR7007, VR7018, VR9006 1250P VR6016, VR6038, VR7016 1500P TELEFUNKEN VR1925, VR1930, VR1940, VR1950, VR925, VR930, VR940, VR950 1500P A920, VR2920, VR12970, VR7921, VR7926, VR7931, VR7971, VR975 1250P VR1970, VR1980, VR7970, VR7980, VR970, VR980 1500P THOMSON 1500P V320, V321, V323, V326, V4200, V4300 1500P 1600P V342, V343, V352, V353, V360, V4210, V4230, V4260 1250P V364, V368, V4400, V6000 1500P THORN-FERGUSON 3V35, 3V36, 3V38, 3V39, 3V49, 8943, 8944 1500P 3V44, 3V45, 3V48, 3V54, 3V55, 3V57, 8947, 89476, 8948 1250p 3V43, 9845 1500P TOSHIBA V55, V57 V65, V66, V67 V61, V63 CASSETTE HOUSING AKAI VS35, VS53, VS55, VS66, VS75 FERGUSON 2600P 4300P JVC & FERGUSON HRD515, HRD520, HRD527, HRD540, HRD550, HRD580, HRD600, HRD610, HRD620, HRD660, HRD670, HRD830, HRD840, HRD850, HRD860, HRD4050, HRD6600 & FV37H 2400P IC TRANSISTORS M4918131 SAA5243PE TIP112H UPC1488H STR4090A IC AND TRANSISTORS BU506DF BUZ11 BUZ80 M494B1 SAA5231 SAA1293 S2000A3 S2000AF S2055A S2000AF S2530A TEA201BA UC3844 UPC1185H2 REMOTE CONTROLS AKAI RC-V10A RCV378 V25A AMSTRAD DD8900 VCR4700 BUSH 2020T, 2114T, 23211, 25141 2020, 2114, 2321, 2514 DECCA RC70 FISHER RC9058 GRANADA/REDIFFUSION UNIVERSAL, 79500C, 986700 SATELLITE MK4 TEXT, 70115G, 70133G, 357E MK4A TEXT, 70375C 95288E 944900 RC 876 RC891 RC 896 R 65132 RC 2009 RC 304 RC 313 RC 894 RC 879 RC 309 RC 550 RC NO RC 881 RC 882 RC 884 1500P 1250P 1500P 500P 800P 50P 150P 650P 120P 200P 200P 700P 300P 550P 175P 175P 175P 200P 100P 200P 100P 400P 850p 850p 850p 1400p 1400p 850p 900p 850p 900p 800p 850p 800p 800p 850p 850p TELEVISION MAY 1994 463

REMOTE CONTROLS Description Order Price Description Code Order Price Code TX100 FASTTEXT RC 785 800p GRUNDIG TX100 STEREO FASTTEXT RC 789 800p TP160E PROFESSIONAL RC 107 RC 790 900p 800p TP200, TP300 TOSHIBA RC 380 800p TP400 CT937 RC 401 RC 950 800p 850p TP590-600 CT9117 RC 600 RC 951 850p 850p TP390,TP610 201R4B RC 610 RC 952 850p 850p TP621 RC 621 850p UNIVERSAL PROGRAMMABLE REMOTE CONTROL TP630, TP650 RC 650 850p Controls up to 4 different devices which use infra red TP660 RC 660 850p remote controls including TV, audio, VCR and satellite. TP661 RC 661 850p (need original remote control TC program) HITACHI Order code: IR1OOR Price: 1950p CLE800-CLE830 RC 140M 850p A617402/655602 RC 192 875p A512120/230 We stock Remote Controls for over 5000 RC 900 800p A514790 RC 901 850p different models. Ring for further details on A5088470 RC 902 800p 081-900-2329. A518612 RC903 900p SCL002 RC904 850p C2096 A511940 655602H n -F RC 905 RC 906 RC 907 850p 800p 850p BACKUP BATTERIES REPLACEMENT PHILIPS NI -CAD BACKUP BATTERIES IFB13, 14, 15 RC 143 875p Replaces Philips Part No's: FS4 RC 148 850p 138-10138, 138-10313. 1.2V- 90mAh RG305 120p RC 305 825p Replaces Philips Part No's: RG306 RC 306 825p FS9/1-10/1 138-10229. 2.4V -90mAh RC 307 850p 200p VS5 RUK RC 308 825p REPLACEMENT FERGUSON NI -CAD BACKUP VS4-1 RC 310 850p BATTERIES MULTICONTROL (17C20) RC 311 800p Replaces Ferguson Part Nos: KORTING 18279, 18396, 18460, 18521 SE 00E6-066-001, 2.4V RC 108 850p 40540 VTS RC 108 900p Used on: 3V35, 3V56, 3V58, 3V65 250p LOEWE Replaces Ferguson Part No: 00E6-067-001. DC11 RC 146 850p 1.2V MATSUI Used on: TX10 010270601 RC 889 850p 150P VX770 RC 892 850p METZ JAVA COLOR (6890) RC 166 850p REPLACEMENT COLOR 17156) RC 183 850p JAVA (7180) RC 184 850p LINE OUTPUT MITSUBISHI 939P/03607, 939P/03609 RC 140M 850p TRANSFORMERS NOKIA SATELLITE Description RC 550 850p Price Order NORDMENDE Code TC2336 RC 351N 850p CMC1, TC3519 HITACHI 2433752 1500p RC 356 LOTO1 875p ORION 3714002 1500p LOTO2 OCEANIC 390C9500 ORION RC 339 900p FIDELITY ZX300 1500p LOTO3 FE TX100 90 DEG 1500p LOTO4 RC53 RC 892 850p SABA 490007182 1500p LOTO5 PANASONIC FE TX90 WHITE 1650p EUR51200 LOTO6 RC 200 850p TC2200 ITT D307/37 EQ 1600p LOTO7 RC 201 850p BLAUPUNKT 210 1600p LOTO8 VSQ0357/NV730 TNQ1621 PHILCO RC 202 RC 203 875p 900p GRUNDIG 2922010 1600p LOTO9 ITT CVC800/1/3 1500p LOT10 CARVEL, CONCORDE, RC 108 850p ITTD218/37 EQ 1600p LOT11 MERCURY, TELESTAR NORMENDE 5255 1600p TC10 LOT12 RC 152 900p SABA 81000 200 PHILIPS 1600p LOT13 SALORA T236 ECI 1650p LOT14 RC5002,5154 KT3 NON TEXT 69117032 RC 134 RC 135 RC 178 850p 825p 875p SABA 811-50-24 1600p LOT15 SABA 770223500 1600p LOT16 69117194 RC 180 875p TELEFUNKEN AT1 1450p LOT17 RC5991-UNIV RC 300 850p TELEFUNKEN EQ 1400p RC38 LOT18 RC 301 875p SALORA FM0218B KT3 TEXT 1600p RC 5301 LOT19 800p NORMENDE 5255 1600p LOT20 RC5352 RC 5352 800p RC5375 RC 5375 850p ITT CVC 1150/1 1500p LOT21 RC5 STANDARD RC 5534 850p ITT COMPACT 80 1500p L0T22 RC5901 RC 5901 850p FE TX100 GREEN 1450p LOT23 RC5903 RC 5903 800p HINARI CT4/5 5113 1500p SABA LOT24 T6772 SELECO 6320410 1600p RC 149 LOT25 900p TC319-320 BLAUPUNKT 8667 RC 328 875p 1600p LOT26 TC356 RC 356 875p TC358 RC 358 850p ITT COMPACT B1 1450p LOT27 ITT CT3326 MUL 1500p LOT28 TC360 RC 360 800p ITT D066/37 EQ 1600p LOT29 TC365 RC 365 800p ITT 3546 EQ 1500p SALORA LOT30 LUXOR 5810110 1600p LOT31 SERIES L RC 190 875p 86173 SABA 849380920 RC 882 850p 1600p LOT32 SANTO HITACHI 2434141 CP 1450p LOT33 RC218, RC222, RC228, RC238 RC 140M 850p FETX100 110 D 1700p LOT34 JXGE RC 878 850p HANTAREX 28021 1600p LOT35 JXDE RC 884 850p SHARP C3700 EQ VHR2300 1600p LOT36 RC 890 850p RC628 HITACHI 2432981 CP 1500p LOT37 RC 865 900p SHARP FERGUSON 00D3-508-002 1650p LOT38 G01210ESA, 123CESA, 204, 251 RC 140M 850p Fits Chassis TX99 41cm + 51cm SIEMENS Used On: 51K2, 51J8, 51J7, 41H3, FC616 RC 130 850p 41H3, 41H2, 51K3 FC631 RC 132 850p PANASONIC TLF14567F FC742 1850p LOT39 RC 164 900p Used On: TC2043, TC2243, TX300 SONY PANASONIC TLF14568F 1850p RM604, RM605. RM606 LOT40 RC 140 850p Used On: TX2231, TX2244 32 CHANNEL RM613 RM632, RM636 TATUNG RC 140M RC 141 RC 160 850p 850p 850p PANASONIC TLF14584F Used On: TC2210, TC2160, 2350p LOT41 TX1752, TX2112 FXA RC 877 850p TX2112, TX2162, TXC22 RC70 RC 883 750p PANASONIC TLF14586F FX70 FASTTEXT 2350p LOT42 RC 894 850P TELEFUNKEN TC1651, TC2051, TC2061, F8632 RC 632 ST 850p TC2253, TC2263, TX5500 F13639 RC 639 ST 850p HINARI 1600p L0T43 THORN/FERGUSON Used On: CT15 3V35-42 RC 342 850p HITCH! 2434274 1400p LOT44 3V31-32 RC 344 850p CPT2174, CPT2176, CPT2178, 2434274 3V57-58 RC 628 900p TX10 TEXT TX10 STEREO TEXT TX9-90-100 RC 732 RC 738 RC 740 750p 750p 750p We stock line output transformers for over 100 different models. Please ring 081-900 2329 for 3V55, FV11 RC 783 900p more information. FAULT FINDING GUIDE BOOK Video Recorders Edition 3, 1994 Lists more than 4000 faults for 43 different brands Price: 9 45p Only. No VAT Order Code: BOOK01 Satellite Repair Manual Edition 2 A comprehensive guide to receiver reviewing, featuring stock faults and installation tips. Price 1475p Only No VAT Postage 100p Order Code: BOOK03 VIDEO HEAD CLEANING STICKS (1>. Order Code: SP14 Price: 17p Each 15p Each Pack of 10pcs 13p Each Pack of 25 pcs VIDEO MAINTENANCE TOOLS Set of 8 Allen keys packed III 4.1k.nun 11,1 I Spt 5,11,11 in a plastic wallet Order Code: TOOL') Price I25p Jcmgnckl for video mamtcruince 2'111m TIME LAG I20mm) FUSES QUICK BLOW (20mm) Value Order Code Price Order Code Price 160mA FUSE01 75P FUSE17 60P 250mA FUSE02 75P FUSE18 60P 315mA FUSE03 75P FUSE19 60P 400mA FUSE04 75P FUSE20 60P 500mA FUSE05 75P FUSE21 60P 630mA FUSE06 75P FUSE22 60P 800mA FUSE07 60P FUSE23 60P 1A FUSE08 60P FUSE24 60P 1.25A FUSE09 60P FUSE25 60P 1.6A FUSE10 60P FUSE26 60P 2A FUSE11 50P FUSE27 60P 2.5A FUSE12 50P FUSE28 60P 3.15A FUSE13 55P FUSE29 50P 4A FUSE14 55P FUSE30 50P 5A FUSE15 60P FUSE31 50P 6.3A FUSE16 60P FUSE32 50P CERAMIC PLUG TOP 3A 5A 13A FUSE33 FUSE34 FUSE35 100P 100P 100P ALL THE ABOVE PRICES ARE FOR PACKS OF 10 FUSES Solder Mop 1 2mm x 10 metres Tubed Silicon Grease 50 gram Tubed Heat Sink Compound 25 gram UNIVERSAL HEAD EXTRACTOR TOOL Hand tool designed for extracting hard to remove heads without damage to either the head or the mounting assembly. Adjustable so as to suit various brand heads. PRICE - 7 300P 200P 150P GRANDATA LTD K.P. HOUSE, UNIT 15, POP IN COMMERCIAL CENTRE, SOUTHWAY, WEMBLEY, MIDDLESEX, ENGLAND HA9 OHB Tel: 081-900 2329 Fax: 081-903 6126 464 TELEVISION MAY 1994

' VIDEO SERVICE KITS AMSTRAD VCR700 Contents BELT SET PINCH ROLLER. REEL IDLER VIDEO LAMP Order Code: SK41 FERGUSON & JVC 3642/43 HRD455/HRD725 Contents BELT SET. PINCH ROLLER CLUTCH MECHANISM TENSION BAND Order Code: 5037 17.50 Economy Kit Contents BELT SET PINCH ROLLER SUPPLY CLUTCH TAKE UP CLUTCH Order Code: 5038 9.50 3V58/59 HRD170/180,210(230/3001320.370,400,430530,700 750 HIRS5000 Contents BELT SET PINCH ROLLER. IDELR ARM TENSION BAND Order Code: SK44 3V29/3V30 HR7200/7300/7350 Contents BELT SET. PINCH ROLLER. TENSION BAND. IDLER TYRES Order Code: 5005 31/35/36 38.'39,49 HRD110111P120225 Contents BELT SET PINCH ROLLER TENSION BAND IDLER TYRES Order Code: 5604 3631'3642 HR76007610/7650/7655 Contents BELT SET T/U REEL TABLE TYRE PINCH ROLLER REEL IDEAL. T/U CLUTCH Till IDLER TENSION BAND VIDEO LAMP Order Code: 5033 12.00 3V35136/30/39,49 HRD110/111 /120/121225 Contents BELT SET. TIU REEL TABLE TYRE. SUPPLY REEL TABLE TYPE P NC- ROLLER TU TR REEL _AND Order Code. 5035. 10.50 3629/3630 HR7200/7300/7350 Contents BELT SET. I/O REEL TABLE TYRE. SUPPLY REEL TABLE TYRE. PINCH ROLLER. REEL IDLER T/U CLUTCH TA.) IDLER TENSION BAND VIDEO LAMP Order Code: 51131 11.00 3644145/48/53154:55,57 HRPSOIHR0140/150/158/160 H80250i257;565,566/755 Contents BELT SET PINCH ROLLER CLUTCH MECHANISM TENSION BAND Order Code: $638 15.00 VIDEO SERVICE KITS (Cont.) HITACHI vt52 61 6E 63.64.65 85,86E40 Contents Economy Kit Contents BELT SET PINCH ROLLER. BELT SET. PINCH ROLLER 5.50 FF REW ARM. CLUTCH PLATE. FREW IDLER TENSION BAND Order Code: $649 14.00 Order Code: SK50 0.50 6.00 5.50 Economy Kit Contents BELT SET 1 1; REEL TABLE TYRE PINCH ROLLER REEL IDLER TYRE T L IDERL TYRE. Tit) CLUTCH Order Code: 5034 5.50 Economy Kit Contents BELT SET. T/U REEL TABLE TYRE SUPPLY REEL TABLE TYRE PINCH ROLLER TU CLUTCH TU IDLER TYRE REEL IDLER TYRE Order Code: 5036 5.80 Economy Kit Contents BELT SET. T UREEL IDLER TYRE. SUPPLY PEEL TABLE TYRE PINCH ROLLER REEL IDLE TYRE T/U IDLER TYRE LI! CLUTCH Order Code: SK32 5.10 Economy tat Contents BELT SET PINCH ROLLER Order Code. 5040 FISHER FVHP905/906/907/908/910/911516918 Contents Economy Kit Contents BELT SET PINCH ROLLER BELT SET PINCH ROLLER IDLER GEAR IDLER UNIT. IDLER TYRE TENSION BAND Order Code: 51457 FVHP615/618/620/622,7 730/83E6840 Contents BELT SET PINCH ROLLER. IDLER GEAR IDLER UNI T. TENSION BAND Order Code: SK68 13.00 Order Code: 51(58 10/711i7151716i720/721322/725i Economy & Contents BELT SET PINCH ROLLER. IDLER TYRE 12.50 Order Code: $069 HITACHI VT11.'1,1'33 Contents BELT SET. PINCH ROLLER TENSION BAND IDLER TYRES Order Code: SKIM VT11NT33 Contents BELT SET T/UP REEL TABLE TYRE. SUPPLY REEL TABLE TYRE. PINCH ROLLER. FF/REW IDLER CLUTCH PLATE. TENSION BAND Order Code: SK45 14.00 9.50 5.00 3.60 6.00 63400 405,410 13. 14:,511 B420125/26128/430/31,35,48/4501498/ 510 52025:26 530 35136,540/545.46i48/570/75,576,580 5;88 Contents TIMING BELT PINCH ROLLER FPREW ARM. CLUTCH BASE TENSION BAND Order Code: SK52 11.50 VIDEO SERVICE KITS (Cont.) SHARP 0C381 Contents BELT SET. PINCH ROLLER REEL IDLER TENSION BAND VIDEO LAMP 3.25 Order Code: SK41 VT100110;1111 131115/ 16/120125/1281130/1351138,145.15B 175220225/250255/258260,VTL30 Contents BELT SET. PINCH ROLLER FFIREW ARM. CLUTCH PLATE TENSION BAND VC:A100:VCA102NCA104VCA202 Contents BELT SET. PINCH ROLLER REEL DRIVE UNIT TENSION BAND Economy, Kit Contents BELT SET PINCH ROLLER REEL DRIVE UNIT TYRE Order Code: SK51 14.80 Order Code: SRO 13.50 Order Code: SK65 E6.25 PANASONIC NV2000,NV2010 Contents BELT SET PINCH ROLLER TENSION BAND IDLER TYRES Order Code: SK03 6.25 NV7000/NV7200INV7800 Contents BELT SET PINCH ROLLER TENSION BAND IDLER TYRES Order Code: 5602 r40300inv330 N \1333NV340INV366 Contents BELT SET PINCH ROLLER. TENSION BAND. IDLER TYRE Order Code:51401 NV20001W2010 Contents BELT SET PINCH ROLLER FF IDLER PLAY IDLER TENSION BAND VIDEO LAMP Order Code: SIM 8.00 Economy lit Contents BELT SET. PINCH ROLLER. IDLER TYRE PULLEY TYRE Economy Kit Contents BELT SET PINCH ROLLER REEL IDLER TYRE 9.00 Order Code: SIM 4.75 VC5001VC571A1C58174C582 VC583A/C584,VC5F3 Contents Economy Kit Contents BELT SET PINCH ROLLER BELT SET PINCH ROLLER REEL IDLER TENSION BAND REEL IDLER Order Code: 5660 9.50 Order Code: SK61 6.50 VC781 AIC7810NC7822NC785.VC786NC79BNC800/ Economy & Contents BELT SET PINCH ROLLER FFIREW IDLER TYRE. T'UP REEL TABLE TYRE. SUPPLY REEL TABLE TYRE Order Code: 5621 NV777:NV788 Contents BELT SET PINCH ROLLER 6.00 Order Code: 5622 Economy Kit Content BELT SET PINCH ROLLER 3.00 IDLER UNIT. TENSION BAND IDLER TYPE Gin Order Code. SK46 A 4.50 Order N Code: $611 DATA 7.00 Order Code: 5618 4.00 LTD 5.50 Order Code: SK14 4.50 NV7000 NV7200 NV7800 Contents Economy & Content BELT SET PINCH ROLLER BELT SET. PINCH ROLLER IDLER UNIT PLAY IDLER IDLER TYRE. CLUTCH TYRE TENSION BAND Order Code: SKI I 8.50 Order Code: 5612 4.20 N6300,N6330,N6333/N8340/NV366 Contents Economy Kit Contents BELT SET PINCH ROLLER BELT SET. PINCH ROLLER IDLER UNIT. PLAY IDLER IDLER TYRE PLAY IDLER TENSION BAND TYRE Order Code: SKIS 7.50 Order Code: We 4.00 NVG7,16VG9NNGIGINVG11/NVG12+1VG14/NVG15/NVG16. NVG18NVG30:NVG12OINVG130/1WG400/NVH65 (PX,AC AG1810 (RK) Contents LOADING BELT CAPSTAN BELT PINCH ROLLER IDLER TENSION BAND Order Code: 5027 NV332 Contents BELT SET PINCH ROLLER PLAY IDLER FF PEW IDLER TENSION BAND FF REW TYRE Order Code: SK29 12.00 Economy Kit Contents LOADING BELT. CAPSTAN BELT. PINCH ROLLER. IDLER TYRE Order Code: SK28 4.00 Economy & Contents BELT SET PINCH ROLLER PLAY IDLER TYRE FFIREW IDLER 'FIRE Order Code: SK30 5.10 N6230150160280430,450/460/470/650/8101890, AG1200PKJAG1500PK Contents Economy Kit Contents BELT SET PINCH ROLLER. BELT SET PINCH ROLLER IDLER TENSION BAND IDLER TYRE Order Code: SK23 MOO Order Code: SK24 3.50 NV600/NV688 Contents Economy Kit Contents BELT SET. PINCH ROLLER. BELT SET PINCH ROLLER PLAY IDLER. FF/REW IDLER. PLAY IDLER TYRE. FFIREW TENSION BAND IDLER TYRE Order Code: SK25 12.00 Order Code: SK26 6.00 NV730N6770 Contents Economy Kit Content SLOT IN BELT. LOADING BELT SLOT IN BELT. LOADING BELT PINCH ROLLER. IDLER UNIT PINCH ROLLER IDLER TYRE TENSION BAND Order Code: $619 6.50 Order Code: SX20 4.00 NV370iNV380/4801630/780,830/850AG2100PKIAG2200PK Contents Economy Kit Content BELT SET PINCH ROLLER BELT SET PINCH ROLLER. IDLER TENSION BAND IDLER TYRE 633181/VC6821/C684NC685A/C693N0699A/C6F3A/C700 Contents Economy Kit Contents BELT SET. PINCH ROLLER. BELT SET PINCH ROLLER REEL DRIVE UNIT. TENSION REEL DRIVE UNIT TYRE BAND Order Code: SK62 13.50 Order Code: SK63 6.00 THIS MONTHS SPECIAL OFFERS STK461 E5.5 STK 7563F 8.00 STK5332 1 80 STK73410 3.50 STK5333 5 50 TA8205AH 2.50 STK5422 3.75 TA8210AH 3.00 STK5476 3.50 TA82 15H 3.00 STK7308 3.50 TA82 16H 3.75 STK7348 E4.00 TIPL791A 0.80 STK7358 4.40 SONY FUNCTION SWITCH (2 LEG) SPECIAL PRICE 0 50 VIDEO REEL MOTOR PU51381V 15.00 3v29, 3v30, 3v31, 3v32. 3v39, 8930, 8931. 8941. 8942 HR7200 HR 7300, HR7600, HR7S1 0 HR7650, HR7655 LIMITER POST Used in HINARI, MATSUI, ORION, SAISHO IDL232 0.70 BUT1 1AF 0 55 TDA3654 f 1 00 TDA460 1 1.20 UNIVERSAL VIDEO LAMP' 9v 80mA (310mm WIRES) UNIVERSAL VIDEO LAMP 9v 80mA (310mm with Plug) UNIVERSAL VIDEO LAMP 9v 80mA (210inin with plug) HITACHI TRANISFORMER 2434274 OUTPUT TV MODULE HM6251 ICPF10 ICPF15 ICPF20 ICPF25 I.C. PROTECTOR ICPF38 ICPF50 ICPF75 ICPN5 ICPN10 ICPN15 ICPN20 ICPN25 PRICE: ONLY 30p EACH AUDIO CONTROL HEAD AMSTRAD ORIGINAL NO: 150751 0.25 0.40 0.40 14.00 5.50 ICPN38 ICPN50 ICPN75 Used On: Amstrad TV01.7,3, VCR4600, 4600M11. 4700, lanai V2S, VCR4600. 480E, 5200, 5600, 6600, VIP3000. 5000 Also Fits, Fidelity, Funai, Hinari, Prone. Schneider. Mirada. Umverum. Order Code: AIM Price: 13.50 AMSTRAD ORIGINAL 00: 153134 Used On, Amstrad 008900, 8904, VCR2000, 6000, 6100, 8600. 8602, 8603. VCR8804, 8760, 8704, 8714, 8800. 9005. 9244 Also fits: Anitech, Bondstec, Casio. Crown. Fidelity. Goldhand, Granada, Hinari. Marquant, Omega, Pithy. Schneider, SEG, Sentra, Shintom, Tashike, Tatung. Towada, Universiun. Order Code: 81132 Price 14.50 K.P. HOUSE, UNIT 15 POP IN COMMERCIAL CENTRE, SOUTHWAY WEMBLEY, MIDDLESEX, ENGLAND HA9 OHB Telephone: 081-900 2329 Fax: 081-903 6126 Access & Visa Card accepted. Open Monday to Saturday. TELEVISION MAY 1994 465

ELC EAST LONDON COMPONENTS AUDIO TELEVISION VIDEO COMPONENTS AT VERY KEEN PRICES TEL: 081-472 4871 FAX: 081-503 5926 REMOTE CONTROLS FROM 7.99 IDLER TYRES 50p 1+, 25p 10+ VIDEO HEADS FROM 6.99 Over 200 models at very attractive prices. AKAI, AMSTRAD, FERGUSON, FISHER, GOLDSTAR, HINARI, HITACHI, LOGI, MATSUI, ORION, PANASONIC, SAISHO, SHARP AND MANY MORE VIDEO SPARES 3V29 TAKE UP IDLER 3V29 F/F REW IDLER 3V5955 FV1914 IDLER 3V23 LOADING ROLLER BAR SHARP 0005 & 0006 SHARP VC651 ASSEMBLY VT11/14/17 IDLER VT11 CLUTCH ASSEMBLY VT100/225/260 IDLER NEC 9013 IDLER C4.999 SANYO VHR3300 IDLER 0.999 AKAI VS105250 CLUTCH ASSEMBLY C11.999 SAISHO VR380 CLUTCH MITSUBISHI H5337 F/F IDLER ALBA SENTRA PULLEY MATSUI U MITER POST PANASONIC NV370 IDLER FISHER 615 IDLER FISHER GEM ASSEMBLY f 1 309 C2609 11.509 C3.999 E1.959 E13.999 El 95p E6.999 04.999 f2.70p C1.359 11259 E1.959 C3.509 C4509 AMSTRAD FINCH WHEEL MOD KIT 0.999 UNIVERSAL TRIPLER C4.999 UNIVERSAL TRIPLER WITH FOCUS C7.999 HITACHI MODULE HM6251 19.999 CUC2410 TRIPLER 116.99 TENSION BAND FOR MOST MOD. FROM C1.999 CIRCUIT PROTECTOR ICP 509 TX10 FOCUS UNIT 7.999 PHILIPS BACK-UP BATTERY E1.309 ALBA BATTERY.1F 5.5V E2.50p IV SWITCHES FOR MOST MOD. FROM E1999 SONY FUNCTION SWITCH 065p VIDEO BELT KITS AKAI VS1/2/5 1.75 VS22/35 200 VS195/250 1.50 ALBA VCR4000 1.5(1 AMSTRAD VCR4600 VCR6000 VCR7000 FERGUSON 3V22 1.80 3V29/30/33 1.00 3V42/65 0.85 HRD520/830 1.20 FISHERS FYHP615/725 1.10 FYHP905/910 1.10 GRUNDIG VS180 1.45 VS300 1.90 VS380 1.75 HINARI VXL3-20 1.25 VXL4-35 1.50 HITACHI VT11/33 1.30 VT52/65 1.75 VI 110/220 1.80 MITSUBISHI HS306/307 1.75 PHILIPS YR 6548 2.40 YR6367 1.50 SAMSUNG VX510/520 1.50 SANYO VHR1300 VHR3300 SHARP VC381 1.30 VC651/681 1.25 VC9300 1.50 ELC EAST LONDON COMPONENTS 63 PLASHET GROVE, EAST HAM, LONDON E6 1AD. TEL 081-4724871 two minutes walk from Upton Park Tube Station PLEASE PHONE US IF WHAT YOU NEED IS NOT LISTED AS WE HOLD THOUSANDS OF ITEMS IN STOCK ADD f1 P/P ADD 17.5% VAT ALL GOODS DESPATCHED SAME DAY PRICE SUBJECT TO CHANGE WITHOUT NOTICE VISA ACCESS ACCEPTED. MIN ORDER 5.00 LINE OUTPUT TRANSFORM( fi S OVER 100 MODELS AT LOW PRICE 5 AKAI MATSUI C72570E 19.99 16.99 072870 19.99 14406 16.99 ALBA 14501420 16 99 CTV14RS 19.99 1465 19.99 AMSTRAD 1480A 1699 CTV2200 14.99 MITSUBISHI CTV2210 14.99 CT2528ETX 16.99 TVR1/2/4 16.99 CT2839ETX 16 99 BUSH ORION 20207 16.99 14RX 16 99 2714 16.99 PHILIPS FIDELITY KT3 13.99 2X2000 14.50 KT4 1619 1199 112;90830005,86 FERGUSON 16 99 24, 16 99 3A 16.99 1.00 RE DSPOT 16.99 CTX E/S 16 99 WHITE 16.99 CFI 16.99 19.99 NCR 16.99 TTXTX0999e100 1619 GR1'AX 16.99 G90 AE 16.99 FST 1199 PANASONIC BLUESPOT 18.99 71E14520F 24.99 GREEN 13.99 TLF14521F 24.99 YELLOW 16.99 TLF14567F 24.99 GOLDSTAR TLF14568F 2419 CBT4282 16.99 TLF14584F 24 99 HINARI TLF14586F 24.99 C14/5 16.99 SAISHO CTV140 12.99 CT14R 16 99 HITACHI CT141RB 16 99 CPT1446 16.99 SALORA CPT1455 16.99 21060 16.99 CPT1476 16.99 25C51 1199 CPT1493 16.99 SANYO CPT1646 16.99 CBP21413 29.99 CPT2028 16.99 CTP3246 29 99 CPT2036 16.99 CTP6262 29.99 CPT2048 16.99 CTP7130 39.99 CPT2078 1099 CTP7132 39.99 CPT2084 16.99 CTP7135 39.99 CPT2087 16.99 SENTRA CPT2174 16.99 GX9000 1199 CPT2176 16.99 GX9700 16.99 CPT2178 16.99 SHARP CPT2238 16.99 C14105 29.99 CPT2248 16.99 03700 39.99 CPT2276 16.99 C728100 29.99 CPT2278 16.99 SOLAVOX 2.15 CPT2476 1199 16819 1199 2.55 CPT2478 16.99 20819 1199 ITT 22819 16.99 C72613 16.99 28R09 16.99 C13306 1099 SONY C73325 16.99 KV1442 16.99 C73429 16.99 KV1882 16.99 C73835 1199 KV2052 1199 ST3487 16.99 KV2066 16.99 ST35467 16.99 KV2096 1619 71(2613 16.99 KV21XRTU 16.99 TX3327 16.99 KV2204 16.99 703447 16.99 KV2212 1699 TX3835 16.99 KV2217 1199 COM 808 16.99 KV2704 1199 COMB 18.99 KV2705 1199 DIGI 11 16.99 KV2752 16.99 MONOPRINT 16.99 KV2756 16.99 CVC25/32 9.99 TATUNG LOEViE OPTA TN8422 19.99 ART 1 16.99 TOSHIBA CLAS M 124 1619 150F6D 3540 PROFS 28 16.99 ZANUSSI STUDIO 1 16.99 205M502 19.99 STUDIOS 28 16.99 2257502 1/99 7100107 28 16.99 2627511 19.99 AN3822K 7.99 LA7835 1.99 STK5720 9.00 TDA1516 4.00 UPC1378 2.20 256705 2.00 AN51 51 6.99 MEA2901 280 511(5730 000 TDA1518 4.00 UPC1394 1.90 2S5755 3.50 AN5435 2.50 M490661 850 STK6982 180 TDA1520 4.00 UPC1420 5.25 258817 2.00 AN5515 2.99 M491961 8.50 STK7216 7.00 TDA1521 3.50 UPC1470 2.00 258861 0.60 AN5521 2.99 M49481 050 STK7226 8.50 TDA1522 199 UPC1488 3.50 2$13882 0.80 AN5900 1 50 M5840A-84 9 99 STK7308 4.25 MA1670 3.00 UPC1498 3.50 258891 1.40 AN7161 340 M54543L 2.99 STK7348 410 TDA1701 4.21 X2402P 4.25 258892 0.80 AN7171 425 M545441 2.99 571(7356 9.00 TDA1770 4.00 SG264A THY 7.00 25E11010 AN7178 /60 M54545L 2.161 STK8250 8.00 TDA1908 1.00 SG613 THY 11.00 25131016 0.75 180 BA718 1 99 M54548L 4.25 STK73410 6 99 TDA2003 1.00 025 BA3402 3 99 M54549L 4.9:1 STR441 6.50 TDA2005 1.30 8C372 0.50 22:793 0.25 84,5402 250 M54644L 3.99 S783125 5.99 704,2030 110 8C368 8A6109 1.80 M54647L 3.90 $TR4211 199 TDA2170 3.00 6F869 :I: 2211t,.1:g BA6121 299 M54648L 3.99 STR5412 450 T0A2270 3.25 130208A geg zp.,;,,, 0.50 BA6122 1.99 M54649L 3.99 STR6020 4.50 TDA2575 2.00 BU500 i 0.60 BA6209 2.50 MB3730 2.00 STR9012 6.00 TDA2577 4.25 BU508A 199 25C1399 0.60 BA6219 2.99 MB3731 2.99 STR41090 000 TDA2578 3.00 BU508AF 1.30 2SC1413A 2.40 BA6222 199 MB3732 2.99 STR44115 7.75 TDA2579 2.50 BU508DF 1.50 2501454 125 BA6229 280 MC13306T3 3.98 STR40090 5.99 TDA2581 3.00 13U50800 1.60 2SC1573 0.40 84,6238 199 MDA2061 5.99 STR50020 6.50 TDA2582 3.00 BU903 1.65 2SC 1670 0.85 64,6239 2.50 MDA2062 4.25 STR50103 4.99 TDA2600 5.75 BU908 1:99 2SC1678 1.20 64,6304 190 STK430 7.00 STR50115 6.50 TDA2653A 350 BUT11A 195 2SC1 827 1.20 BA0305 1.90 STK433 4.99 STR54041 5.50 7043330 7.00 BUT11AF 1.20 2SC1922 2.75 8A6259 2.99 ST1457 6.50 STR55051 9.50 TDA3505 100 BUT56A 120 2SC1941 0.65 64,10324 1 99 STK459 5.89 STR58041 5.10 TDA3560 125 BUK444 2.99 25C1942 1.95 64,10358 1 80 ST1461 7.50 STR59041 6.50 TDA3561 3.00 BUX85 BA15218 2.20 STK463 10.00 STR10006 6.00 TDA3562 3.00 guwila C:::(5) ;ISM ;::?, CNY65 4.99 011(465 7.50 STR01806 100 7043565 3.00 DTA114 0.70 2SC2229 0.30 CNY75 2.99 STK0029 3.99 04,51025 6.00 TDA3576 7.00 DTA124 0.45 2SC2235 0.40 CNX62A 2.99 STK0040 5.50 SAA1250 3.50 7043640 4.00 DTA144 0.50 25C2335 1.20 DTC114 2SC2458 0.30 CNX82 CNX83 3.99 2.99 STK0060 STK2029 9.99 5.99 04,61251 54.A1290 4.50 8 00 TDA3650 MA3651 10.00 2.00 0.60 0.50 HAI 377 1 99 STX2048 11.00 54,41291 9.00 TDA3653 2.99 EN124.1 F.,322.2,!::. HA1397 2.60 STK2I 29 7.00 SAA1293.03 150 1043654 1.99 54j2955 0.75 2SC2565 2.75 HA11225 1.99 STK2250 8.00 SAA1294-03 13.00 TDA3300 5.00 MJE340 0,40 25C2577 1.20 HA11227 2.20 STK3041 6.00 2.64,5000 2.50 TDA4500 171 M3E13005 1.30 25C2579 1.30 HA11235 1/9 STK304211 050 084,5010 4 30 T0P4501 4.75 MN650 000 2SC2580 1.80 HA11423 2.20 STK306211 7.00 SA45012 3 75 104,4502 5.00 84050 139 2SC2581 200 HA11711 6.50 STK4026 9.00 S4,4,5020 3.50 TDA4503 3.00 64051 1.50 25C2791 2.60 3Y 1.50 HA11753 5.99 STK4122 000 TA7193 4.00 TDA4504 4.99 i82 5,,; 3231n 2.50 HA11758 590 STK413111 6.50 TA7205 1.00 TD44505 E 5.99 TIPL761A 1.75 2SC3281 3.00 HA13001 1.95 STK4132I1 7.06 747222 1.20 TDA4505 M 12.99 TIPL791 A 1.30 2SC3284 1.60 HA11717 4.75 5'0(412111 7.00 04,4,5030 4.99 TDA4505 4.00 2.60 HA13008 9.99 STK4141II 6.51 TA7240 2.60 104,4600 1.99 TIP112 9.70 2SC3519 1.50 HA13108 3.50 STX4141V 8.00 TA7241 260 TDA4601 1.99 11p3055 0.60 2SC3679 100 HA13117 2.99 STK4142I 7.75 TA7264 4.99 TDA4950 1.99 32$13 15 2143055 175 0.80 HA13118 2.99 STK4151I 7.00 147269 5.90 TDA6200 8.00 2N3773 0.20 HA13119 2.90 511(41521 /00 74,7270 2.50 704,7240 3.00 254,759 i...37,51 HAI 3402 3.29 STK4161I 9.99 TA7271 2.50 TDA8170 2.99 2SA773 iig`411. 3:t2 HA13403V 550 STK41621 8.00 TA7273 3.50 1048175 2.99 25A965 0.25 250427 3.50 LA4182 119 STK41711 9.99 74,7279 100 704,8178 4.25 0.65 120 LA4270 2.99 ST144172I 100 TA7280 299 TDA8185 500 3tAAr4 ts;',: 130 LA4282 3.90 STK41811 9.00 TA7281 275 TDA8190 3.00 25A1013 0.30 250725 3.50 LA4440 2.20 STK4182 9.99 TA7283 2.60 TPU2732 19.99 2SA1020 0.30 251)837 0.80 LA4445 2.60 STK4191I 919 1A7288 220 TM047C432 15.00 2541094 110 25D845 2.50 LA4460 1.60 STK4192 9.99 TA7293 4.50 UPA81C 1.99 254,1095 2.75 250856 0.80 LA4461 1.60 STK4372 6.00 TA7299 399 2.99 254,1102 1:90 200869 325 LA4465 2 99 STK4392 710 TA7680 4.00 U4646 0.50 2SA1104 ZOO 250870 3.25 LA4466 2.99 STK4853 9.99 TA7699 9.50 UPC1031 1 80 254,1106 2.00 250871 3.25 LA4475 2.99 STK5211 /99 TA8200 4.99 UPC1181 1.10 204,1141 2.00 2501047 200 LA4476 2.99 STK5315 150 TA8201 150 UPC1182 1.10 2SA1146 1.90 2001065 200 LA4495 3.95 STK5325 7.00 TA8207 325 UPC1185 6.00 25A1208 1.50 2SD1138 0.60 LA4496 3.99 STK5332 3.50 TA8210 3.50 UPC1188 4.00 2SA1232 110 2001207 0.50 LA4500 2.30 STK5333 5.99 TA8214 3.50 UPC1230 2.10 25A1265 1.50 2SD1276 1.20 LA4505 2.60 0105338 3.99 74,8215 3.99 UPC1238 1.90 2SA1302 3.00 25131292 950 LA4508 16C STK5342 9.99 74,8216 4.25 UPC1225 2.20 254,1386 2.75 25131397 2.00 LA4700 3.99 STK5372H 5.51 1/18220 175 UPC1241 3.50 258536 0.60 25E11398 1 70 LA6324 250 STK5421 7.00 TA8221 6.75 UPC1277 240 2513554 3.50 2S01426 2.75 LA7330 419 STK5422 6.503.99 UPC1278 2.40 258557 100 2501427 175 LA7520 499 STK5434 710 TEA1039 1.99 UPC1288 4.00 256558 100 2S01432 2.75 LA7522 650 STK5436 5 OC TEA2018A 140 UPC1298 4.00 258560 140 2501439 2.00 LA7530 3.99 071(5451 7.0C TEA2029 3.00 UPC1310 8.00 256562 0.40 25D1453 1.70 LA7800 1.60 STK5466 85C 1E4,2164 3.00 UPC1335 4-00 25B595 180 2501497-02 6.00 LA7801 1.95 S11(5471 4.99 TDA1037 2.00 UPC1318 4.00 258632 0.40 2$131497-06 6.00 LA7802 1.95 STK5476 6.99 TDA1044 2/0 UPC1363 310 258643 0.20 25E41548 5.50 LA7820 3.50 STK5481 4.99 7041170 120 UPC1364 /00 25E1649 0.65 25D1555 4.00 LA7830 1.99 STK5482 4.99 TDA1510 3.50 UPC1365 325 258686 120 2501877 250 LA7832 1.99 STK5490 5.50 TDA 1515 2.50 UPC1377 2.50 2513688 1.30 25D1911 400 REMOTE TESTER 114.98 COPT TESTER 129.99 VIDEO HEAD TESTER E29.99 DE GUSSIN G ROD 29.99 SATELLITE FINDER KIT 29.99 MICROWAVE LEAK DETECTOR 114.99 DIGITAL MULTIMETER FROM E9.99 AMSTRAD HANDSETS VCR4600, 4600Mk11 VCR4700 (Not long play) VCR5200 VCR6100 (Indexer) VCR6100 (Barcode Indexer) VCR6200 Barcode VCR9000 (Old type) NR 2 NR 3 SDR400 (Equivalent) SRD500 SRD510/520 TS90/99 Tower System GOODMANS VCR102 PROLINE 5100TX AMSTRAD LOPTS CTV1000 FB182K CTV2000 FB171 CTV2000 FB171K CN2200 3722002 CN2210 3722002 NR 3 181297 PC12-HRCD/D MSH1FCT31 PCW9512,8256,8512 FERGUSON LOPT MMO6 00D4242001 AMSTRAD TUNERS UE33-B01 VCR4600/4700 UE2-B31F CN2200/2210 1810829 VCR5200 ENV87358F2 VCR7000 ENV87509F2 CN1400 11.75 17.63 11.75 25.85 29.38 32.44 11.75 8.46 14.10 11.05 11.75 13.81 11.75 11.75 17.63 11.75 9.40 9.40 14.10 14.10 13.51 14.10 7.05 4.70 9.40 5.88 7.05 7.05 5.88 Harrison Electronics CENTURY WAY, MARCH, CAMBS PE15 80W FAX: (0354) 51416 TEL (0354) 51289 AMSTRAD IF UNITS TPS7-B0006 VCR4600/4700 TPS7-L0002 1813766 AMSTRAD MODULATORS 18196221 VCR5200 ENP-E730-2 VCR7000 VCR4600Mk11,4700 SRD100/200/400 AMSTRAD PCB HYBRID - LUMINANCE AMSTRAD VCR MECHANISMS 4500,9000 (Old model) CASSETTE HOUSING ASSY. CYLINDER ASSY. (incl. Video heads) 25.26 5200 Timer & Channel Disp. CYLINDER LOWER DRUM ASSY. 5200 Video (Excl Motor) 9.99 5200 Switch Panel 6000 Power Supply 4600, 4700, TVR1,2,3 6100 Mains PCB MECHANISM DECK (Excl Cass. 6100 Audio PCB housing & Cylinder assy.) 18.8 CYLINDER ASSY. (incl. Video heads) CYLINDER ASSY. (excluding Video heads) 20.5 9.40 7000 Switch PCB no:7 2.35 6 CN1400 Switches, Presets & Tuner CYLINDER LOWER DRUM ASSY. (ENV87358F2) 8.23 (Excluding Motor) 9.9 9 CN1400 Switches, Presets & Tuner HEAD BASE ASSY. (Audio) 5.8 8 VMC100- Various parts available, please phone for prices. AMSTRAD MOTORS Loading Motor MCB9B02 Drum Motor E20EL05 Capstan Motor LLN4B21 Capstan Motor JLN4B02 Tape Loading MCF9B02 Cassette Housing RF28OR 14.1014.10 AMSTRAD PCB's 9.40 (Complete, fully populated) 4500 Timer 11.75 4500 Systems Control 9.40 4600 Systems Control/Servo, Display & Control PCB's 4600 Display 7.05 4600 Control 5.88 4600 Video & Audio 5.88 4600 Power Supply 5.88 4600Mk11 Main PCB Assy. 4600Mk11 Timer 4600Mk11 Control 9.40 4600Mk11 Head Amp 4600Mk11 Power Supply 4700 Main PCB Assy. 4700 Timer 4700 Control 15.28 4700 Head Amp Assy. 4700 Power Supply 0 6100 Power Supply 6100 Hybrid, Chrominance 25.26 6100 Hybrid, Luminance 3.53 10.58 9.99 9.99 9.99 9.99 (ENV87509F2) CN2200 PCB no:3 CN2200 PCB no:4 NR 2 Main N PCB NR 3 Main N PCB NR 3 N Power Supply NR 3 Head Amp Assy. NR 3 Video Power Supply 10.95-11.7GHz LNB 2.3dB NF. 'N' CONNECTOR (DRAKE, NO FEED HORN) 29.38 11.75 5.88 17.63 14.63 40.82 14.10 5.88 5.88 4.70 40.82 14.10 5.88 5.88 4.70 17.63 14.10 4.70 7.05 29.38 7.05 7.05 9.40 8.23 3.53 4.70 37.60 43.48 15.22 5.88 4.70 17.63 AMSTRAD SERVICE MANUALS VCR4600 9.00 VCR4600Mk11,4700 9.00 VCR6000/6100 11.50 VCR7000 9.00 VCR8700 8.00 VCR8800 6.00 VCR9000/9004 9.00 VMC100 16.50 SRX100/200 4.70 AMSTRAD COMPUTER OPERATORS MANUAL PC1640 11.75 PC2286/2386 11.75 AMSTRAD PC12MD VGA MONO MONITOR Suitable for use with 2000/3000 series and any other VGA compatible PC 64.63 AMSTRAD SOFTWARE ACCOUNTSMASTER 17.63 (Full accounts program for running small business on any PC) LINKMASTER 11.75 Many AMSTRAD COMPUTER & PRINTER SPARES available, please phone for price. PRICES INCLUDE VAT. ALL ITEMS ARE BRAND NEW AND GUARANTEED ** SAME DAY DESPATCH * * Write or Phone for FULL LIST **POST & PACKING** 10 **EXTRA** mom 466 TELEVISION MAY 1994

I 19.65SAMSUNG WE WILL ONLY SUPPLY TOP QUALITY, BRANDED COMPONENTS. REPUTATION COUNTS WITH US AERIAL ACCESSORIES COAX PLUG 18 F CONNECTOR 20 FLY LEAD 2M 75 VIDEO LEAD 2M 75 4 WAY DISTRIBUTION AMPLIFIER MAINS 19.95 8 WAY DISTRIBUTION AMPLIFIER MAINS 21.75 BATTERIES AA (pkt of 4) 1.20 AAA(pkt of 4) 1.20 FERGUSON 3V55 4.95 PHILIPS MEMORY 1V2 1.90 PHILIPS MEMORY 2V4 2.75 CAPACITORS 0.11 5.5v (back-up) 2.50 63v 47uf at 63v 18 100uf at 63v 22 220uf at 63v 35 250v lut at 250v 20 4.7uf at 250v 25 loul at 250v 35 22uf at 250v 40 47uf at 250v 65 100uf at 250v 1.25 400v lut at 400v 23 4.7uf at 400v 35 10uf at 400v 70 22uI at 400v (ALL PCB MOUNTING) 85 DIODES R2M 95 BY133 15 BY227 20 BY299/800 35 IN4007 10 IN5408 20 BZX61 C (pkt of 5(6v8 7v5 I 2v 15v 24v 33v 68v 120v 130v 1 00 EHT TRAYS CONTINENTAL 30AX FOCUS 8.95 DECCA 120/130 7.95 GRUNDIG CUC2410 14" 14 90 GRUNDIG CUC2410 22'. 14 90 PHILIPS KT3 7.95 UNIVERSAL 5.95 NEW LISTS NOW AVAVAILABLE. PLEASE REQUEST ALBA VIDEO SPARES VCR4000 BELT KIT 1.95 CAPACITOR BACK UP 1.85 PINCH ROLLER 3.95 REEL IDLER 3.95 REEL PULLEY 1.95 AMSTRAD VIDEO SPARES VCR4500 BELT KIT 1.95 GEAR ASSEMBLY 9.95 MODIFICATION KIT 5.50 PINCH ROLLER 3.50 VCR4600 BELT KIT 1.95 GEAR ASSEMBLY 9.95 MODIFICATION KIT 5.50 PINCH ROLLER 3.50 VCR6000 BELT KIT 1.95 PINCH ROLLER 3.95 CLUTCH 3.95 FERGUSON VIDEO SPARES 3V29/30 BELT KIT 1.95 CAPSTAN MOTOR 32.50 CASSETTE LAMP 70 LOADING BELTS (5) 1.95 PINCH ROLLER 3.95 REEL IDLER 2.95 TAKE UP CLUTCH 2.95 TAKE UP IDLER 1.95 3V35/39 BELT KIT 1.95 CAPSTAN MOTOR 21.50 CASSETTE HOUSING 28.95 LOADING BELTS (51 1.95 MAINS TRANSFORMER.23.95 PINCH ROLLER 3.95 REEL IDLER 2.95 TAKE UP IDLER 1.95 TAKE UP CLUTCH 2.95 3V44/45 BELT KIT 1.50 CASSETTE HOUSING 28.95 PINCH ROLLER 3.95 3V65/FV11 BELT KIT 1.75 CAPSTAN MOTOR 27.50 CASSETTE HOUSING 27.50 PINCH ROLLER 3.95 REEL IDLER 2.75 FUSES 20mm A/S (PKTS OF 101 25CMA. 319)AA. 500MA, 630MA 1.20 800MA.1A,1.6A,2A2 5A,3 15A 20mm 0/B (PKTS OF 10) 500MA, 630MA, 800MA, 1A, 1 6A,2A,2 5A.3 15A 80 CNX62A 4.75 SAA1293-02 5.95 SAA1293-03 7.25 SAA1293A-03 8.35 SLI 432 1.95 S11(5331 4.95 STK5332 4.95 STK5333 11.25 STK5421 4.95 STK5422 6.95 STK548I 6.95 STK5482 4.95 STK5490 7.95 STK7308 5.50 STK7348 5.50 STR4211 4.50 STR5412 4.95 STR50020 7.35 STR50103A 5.95 STR54041 6.95 STR58041 5.95 STRDI816 5.70 TDA I 70S 1.95 TDAI770A 3.95 TDA2030 1.95 TDA2170 2.95 TDA2270 2.75 TDA2576A 5.95 TDA2577A 3.50 TDA2578A 2.95 TDA2579 3.95 TDA2581 4.50 TDA2582 2.50 TDA2653A0 2.95 TDA3330 8.50 TDA3560 4.95 TDA3561A 4.95 TDA3562A (TFK) 4.95 TDA3565 3.95 TDA3571BO 8.95 TDA357613 10 25 TDA3650 8.95 TDA3651/3 2.95 TDA365I AO 4.75 TDA3653A 3.50 TDA3654A 2.95 TDA4500 4.50 TDA4501 5.25 FISHER VIDEO SPARES FVH5000 BELT KIT 2.20 REEL IDLER 5.50 PINCH ROLLER 3.50 TENSION BAND 2.60 FVH615/720 BELT KIT 1.95 CLUTCH ASSEMBLY 5.95 PINCH ROLLER 4.50 REEL IDLER 5.95 FVH905/910 BELT KIT 1.95 CLUTCH ASSEMBLY 5.95 REEL IDLER 5.95 HITACHI VIDEO SPARES VT8000/8700E BELT KIT 1.95 FF/REW IDLER 2.95 FF/REW PULLEY 95 PINCH ROLLER 3.95 PLAY IDLER 3.95 REEL TABLE 3.95 TENSION BAND 2.95 VT9300/9700E BELT KIT 1.95 FF/REW IDLER 2.75 FF/REW PULLEY 95 PINCH ROLLER 3.95 PLAY IDLER 3.95 VT11 /33E BELT KIT 1.95 CAPSTAN MOTOR VT11E -27.50 CAPSTAN MOTOR VT33E -23.95 CLUTCH ASSEMBLY 7.95 FF/REW IDLER Genuine 2.50 PINCH ROLLER 3.95 VT63/64E BELT KIT 1.95 CAPSTAN MOTOR 27.50 CLUTCH ASSEMBLY 7.95 FF/REW IDLER 2.50 PINCH ROLLER 3.95 VT120/130E BELT KIT 1.95 CAPSTAN MOTOR.24.95 CLUTCH ASSEMBLY 7.95 FF/REW IDLER 3.75 PINCH ROLLER 3.95 PANASONIC VIDEO SPARES NV230/430 BELT KIT 1.95 PINCH ROLLER 3.95 REEL IDLER GENUINE 3.30 NV333/366 BELT KIT 1.95 PINCH ROLLER 3.95 PLAY IDLER GENUINE 5.50 REEL IDLER GENUINE 1.35 G.G.L. COMPONENTS PO BOX 72, UNIT 7, SOU -H JOHN STREET, CARLISLE, CUMBRIA CA2 5AL. TEL: (0228) 39693/20358 Fax: (0228) 515127. TDA4503 4.95 TDA4505E 5.45 TDA4600/3 2.95 TDA4600/2D 3.95 TDA4601 2.95 TDA4601 OIL 3.75 TEA1039 1.95 TEA2018A 2.50 IMP47C434N 3414 14.95 TMP47C434N 3415 14.95 TMP47C434N3537 14.95 TMP47C434N3555 15.55 TMP47C434N-3558 1555 TMP47C434N-3559 14.95 X2402P 4.95 CIRCUIT PROTECTORS NI 0,N20.1425 (each) 50 LINE 0/P TRANSFORMERS FERGUSON 7X90 2(T 14.85 FERGUSON 7X100 900 16.95 FERGUSON TX100 110D 14.50 FERGUSON TX I 00 FST 17.75 FIDELITY ZX2000 MOD 13.95 FIDELITY 203000 12.95 HINARI CT4/5 15.95 HITACHI CP71474.1476 17.75 HITACHI CPT2174/76/78 15.58 HITACHI CPT2276/2278 16.45 HITACHI CPT2476/2478 17.95 ITT COMPACT 80R/110 14.95 ITT CVCI 200/1 19.95 ITT MONOPRINT 13(MN)... 18.85 MATSUI 1410/20/40 18.95 PHILIPS CP90 17.95 PHILIPS CTX14'/20' 20.35 PHILIPS 2A 18.50 SERVICE MANUALS AMSTRAD 4600 9.95 AMSTRAD 6000 9.95 FERGUSON TX85 9.95 FERGUSON 3V59 13.95 FERGUSON 3V65 13.95 FERGUSON FV11 13.95 SWITCHES FIDELITY CTVI40 1.50 GRUNDIG CUC73I 3.50 ITT TX SERIES 4.95 KT4CTX REMOTE 1.75 TX9/10 STANDARD 1.00 TX9/10 REMOTE 1.75 TX90P100 STANDARD 1.50 TX90 100 RFMOTF..._.. 1.75 TRANSISTORS NV370 BELT KIT 1.95 MODE SWITCH 3.95 PINCH ROLLER 3 95 REEL IDLER GENUINE 3.30 NV730 BELT KIT 1.95 PINCH ROLLER 3.95 REEL IDLER GENUINE 4.30 NV777 BELT KIT 1.95 PINCH ROLLER 3.95 REEL IDLER GENUINE 4.30 NV2000/2010) BELT KIT 1.95 PINCH ROLLER 3.95 PLAY IDLER GENUINE 1.35 REEL IDLER GENUINE 1.35 NV7000/7200 BELT KIT 1.95 PINCH ROLLER 3.95 PLAY CLUTCH GENUINE 6.15 REEL IDLER GENUINE 1.35 NVG7/10/12 BELT KIT 1.95 MODE SWITCH 3.95 PINCH ROLLER 3.95 REEL IDLER GENUINE 3.30 NVG19/41VJ35/41VL28 PINCH ROLLER 5.25 PHILIPS VIDEO SPARES VR6460/6520 BELT KIT 1.95 PINCH ROLLER 3.95 REEL IDLER 3.30 REPAIR KIT 14.50 VR6462/6560 REPAIR KIT 12.95 CASSETTE HOUSING 14 75 PINCH ROLLER 3.95 REEL IDLER GENUINE 4.95 VR6467/6760 REPAIR KIT GENUINE 21.50 BELT KIT 2.95 CASSETTE HOUSING 10.98 PINCH ROLLER ARM ASSY -7.50 SANYO VIDEO SPARES VTC5000 BELT KIT 1.00 REEL MOTOR GENUINE 7.95 REEL PULLEY GENUINE 5.95 VHR1100/1300 BELT KIT 2.25 PINCH ROLLER 3.50 REEL DRIVE ROLLER 5.95 VHR3100/3700 BELT KIT 1.95 PINCH ROLLER 3.50 REEL DRIVE ROLLER 5.95 BC639.20 BC640.20 BF460 95 BU208D 1.95 BU426A 1.45 BU500 2.00 BU508A 1.50 BU508AF 1.80 BU5080 1.80 BU508DF 1.95 BU508V 1.90 BUBO] 1.75 BUT1IAF 1.90 BLIT56A 2.25 BUX84 so R4050 2.95 T9053V/T9054v 3.50 T9064V 1.95 TIP29E (70168V) 75 TIP41C 50 TIP42C 50 TIP112H (T0167V) 75 TIPL791A 1.95 2501497 3.95 2501497/02 4.25 TRANSISTOR EQUIVALENT BOOKS TVT A Z 5 2N-2SD 28.45 NEW RANGE OF PANASONIC LOPTS ASK RING FOR DETAILS REMOTE CONTROLS FERGUSON T725 9.75 FERGUSON T734 9.75 FERGUSON T742 9.75 FERGUSON 1785 FAST TEXT11.95 FERGUSON T789 FAST TEXT11.95 FERGUSON TX 10 NON TEXT11.50 FERGUSON TX10 TEXT 9.75 FERGUSON 7X100 STEREO11.95 FERGUSON TX100 TEXT...10.95 FERGUSON ICC5 17.95 FERGUSON SRA I 13.50 FIDELITY CTVI 4S 12.95 FIDELITY CTV22T 12.75 FINLUX 1101 TO 2386 11.50 GOODMANS 701100/1200.-18.95 GRANADA UNIVERSAL 12.95 GRUNDIG TP400 TEXT 12.90 GRUNDIG TP650 TEXT 11.45 GRUNDIG TP660 11.45 HITACHI CPT1446 11.45 HITACHI CPT2174 17.95 HITACHI CPT2188 9.75 SHARP VIDEO SPARES VC9300 381 BELT KIT 2.50 PINCH ROLLER 3 95 REEL IDLER GENUINE 3.95 REEL MOTOR 3ENUINE 16.95 TENSION BAND.2.95 VC481/482 BELT KIT 2.50 PINCH ROLLER 3.95 REEL IDLER GENUINE 3.95 REEL MOTOR GENUINE 17.95 VC581/582 BELT KIT 2.50 REEL IDLER GENUINE 3.95 PINCH ROLLER 3.95 VC681 BELT KIT 2.50 PINCH ROLLER 3.95 REEL PULLEY 3ENUINE 7.95 VCA140/VC172 BELT KIT 2.95 PINCH ROLLER 3.95 REEL PULLEY GENUINE 7.95 SONY VIDEO SPARES C5/6/7 BELT KIT C5 2.50 BELT KIT C6 1.95 PINCH ROLLER 4.50 REWIND KIT CE 4.95 REWIND KIT C6 3.95 VIDEO LAMPS FERGUSON 31/00/22 50 FERGUSON 3V29 80 PANASONIC NV2000 95 SHARP 9300 1.50 UNIVERSAL 50 VIDEO LEADS SCART LEAD FJLLY WIRED 4.95 SCART LEAD TO 6 PHONO 4.95 SCART COPYING KIT 5.95 SCART TO 2 SCART SKT 5.95 SCART TO 5 SCART SKT 6.95 VIDEO COPYING KIT 5.95 VIDEO REPAIR KIT 4000 11.50ALBA FERGUSON 3V23 15.95 FERGUSON 3V29)30 12.95 FERGUSON 3V35/39 12.95 FERGUSON 3V44/45 14.95 FERGUSON 3V64/65 11.95 FISHER FVH615/7I5 12.75 FISHER FVH905 12.95 HITACHI VT8000 12.95 HITACHI VT9300 12.95 HITACHI VT1I53E 16.95 HITACHI CPT2246 12.75 ITT FS9/10 DIGIVISION 13.255 ITT RG305 10.7 ITT RG306 10.75 ITT VS4 10.75 ITT VS5 TEXT 10.75 MATSUI 1440 12.75 PACE 6000 11.95 PANASONIC TN01411/2 14.95 PANASONIC TN01419 13.95 PHILIPS GI 1 VIR TEXT 13.95 PHILIPS KT3/30 NON TEXT 12.95 PHILIPS KT3/30 TEXT 12.50 PHILIPS RC599112.95 PHILIPS RC5903 GENUINE 12.95 PHILIPS MINIATURE 9.95 PHILIPS VR6462 11.50 PHILIPS VR6467 11.50 PROGRAMMABLE 22.50 REDIFFUSION MKIV 10.95 REDIFFUSION MKIVA 12.45 SAISHO c.17142r 11.50 SAISHO 07149TX 1 21.9505 SANYO 1,11R 1100/1200 14.25 SONY RM615 12.75 SONY R14632/636 10.75 SONY R11670/672/676 1100..2755 TATUNG RC40/45 TATUNG RC70 10.25 TATUNG RC90 11.95 TOP TEL 24.95 VIDEO HEADS AKAI VS1/5 8.50 ALBA 401100 16.95 AMSTRAD 4500/9000 14.70 AMSTRAD 4600/4700..... 14.50 AMSTRAD 6000 17.50 AMSTRAD 7000 14.95 FERGUSON 3V00/39 8.50 FERGUSON 3V42/55 17.25 FERGUSON 3V59/FV12 27.95 FERGUSON 3V65/FV1I 17.95 FERGUSON FV12L/32L 27.95 FERGUSON FV31 27.95 FERGUSON FV42L 48.05 FISHER F VH615/910 16.50 FISHER FVH725 28.95 FISHER F VH906/916 18.50 GOLDSTAR V1221/1290 16.25 HITACHI 8000/9700 15.00 HITACHI VT I 1/33 15.70 HITACHI VT17/19 24.50 HITACHI 1/T63/64 19.25 HITACHI 1/T65 28.50 HITACHI 1/T120E/220E 21.25 HITACHI VT I 30E 27.50 HITACHI VTI20/130E 16.95 PANASONIC G DECK (GEN).8.50 PANASONIC NV230 (GEN) 14.50 PANASONIC NV333 (GEN) 14.50 PANASONIC NV370 (GEN) 14.50 PANASONIC NV430 (GEN) -14.50 PANASONIC NV730 (GEN) _13.95 PANASONIC NV777 (GEN) _13.50 PANASONIC NV2000 (GEN).23.95 PANASONIC NV7000 (GEN).20.45 PANASONIC NVG10/12(GEN)12.95 PHILIPS 1/R6460 14.50 PHILIPS VR6462 12.50 PHILIPS 1/R6467 21.50 SONY C5/7 11.50 SONY C6 9.95 CELLULAR SPARES ANTENNAE 3DB BODY MOUNT 14.25 3DB GLASS MOUNT 15.95 MOTOROLA T/PORT 19.95 MOTOROLA 8500X 1/4 WAVE 9.95 MOTOROLA 8500X BUTION..9.50 MOTOROLA 88000 9.95 MOTOROLA 98000 19.95 PANASONIC H SERIES 14.95 NEC P3 9.95 NOKIA 101 14.95 BATTERIES ERICSSON HOTLINE 23.50 MITSUBISHI MT3 24.50 MITSUBISHI MT5 24.50 MITSUBISHI MT7 700MAH 23.95 MOTOROLA 4500X 39.50 MOTOROLA 48000 SLIM 27.50 MOTOROLA 8000X 24.50 MOTOROLA 8500X 1000MAH23.50 MOTOROLA 8500X 1500MAH29.50 MOTOROLA 88000 1000MAH23.95 MOTOROLA 8800X 1500MAH29.50 MOTOROLA PSNL 700MAH 23.50 MOTOROLA PSNL SLIM 39.50 MOTORCA 98000 600MAH 19.50 MOTORC-A 98000 700MAH 23.50 MOTOROLA 98000 SLIM 39.50 NEC P3 700MA 23.50 NEC P4 7DOMAH 23.50 NOKIA ICI 700MAH 24.50 NOKIA 190 23.50 NOKIA 1320 CITYMAN 29.95 PANASONIC E/H SERIES 32.50 PANASONIC F1 700MAH 23.50 PANASONIC I SERIES 25.50 SONY CMHI 24.95 SONY CMH333 24.50 TECHNOPHONE TP2 27.50 TECHNOPHONE TP3 24.50 TECHNOPHONE TP405 700MAH 23.50 BUY WITH HITACHI VT150E 36.50 JVC HRD250 23.50 LOGIN VR955 21.70 MATSUI VX735A 18.90 MITSUBISHI HS3I8 24.50 NEC 9034/9053 19.75 PANASONIC NV230 16.95 PANASONIC NV333 8.50 PANASONIC NV366 19.50 PANASONIC NV370 9.50 PANASONIC NV430 13.95 PANASONIC NV688 27.70 PANASONIC NV730 18.50 PANASONIC NV777 18.95 PANASONIC NV788 25.95 PANASONIC NV2000/7000 8.50 PANASONIC NVG7/9 17.30 PANASONIC NVG10/12 17.30 PANASONIC NVG18 29.50 PANASONIC NVG2I /25 29.50 PANASONIC NVG30/40 21.95 PANASONIC NVG45 27.80 PHILIPS 6460/6520 9.50 PHILIPS 6462/6560 GENUINE43.50 PHILIPS 6467/6468 GENUNE38.75 VI730 SAMSUNG VX510/970 17.00 SANYO VHR 1100/1300 18.50 SANYO VHR 2300/3200 18.50 SENTRA 8000/8400 16.75 SHARP VC9300/38I /481 14.95 SHARP VC581/681 14.00 SHARP VCA140 14.75 SONY C5/6/7 14.75 TOSHIBA V55/57 8.50 TOSHIBA V73/8313 14.25 TOSHIBA V936 19.75 VIDEO HEADS ARE OF THE BEST DUALITY AND ARE BRANDED OR MANUFACTURERS OWN SERVICE AIDS ANTE% 17W IRON 8.50 ANTEX 25W IRON 8.75 CLEAR TEST TAPE 7.95 FIBRE CLEANING PEN 3.50 HEATSINK COMPOUND 1.55 ONYX SOLDER PUMP 9.95 ONYX TIPS 150 SILICON GREASE 1.85 SOLDA MOP 80 SOLDER 0 5KG I 8SWG....8 50 SOLDER 0 5KG 22SWG 8.75 WELLER GUN TIPS (2) 1.65 NEW EASY TOP TEL NOW AVAILABLE 16.95 CONTROLS UP TO 5 UNITS BATTERY CHARGERS DESK TOP TRICKLE MOTOROLA T/PORTABLE 38.95 MOTOROLA 8000/8800X 23.95 MOTOROLA MICROTAC... 24.50 NEC P3 24.95 NOKIA 101 24.95 PANASONIC E/H SERIES 39.95 PANASONIC F 24.50 SONY CMH333 24.95 DESK TOP RAPID/COND. MOTOROLA 8000 SERIES_A2.50 MOTOROLA 98000 42.50 NEC P3 42.95 NEC P4 44.95 NOKIA 101 42.95 PANASONIC F SERIES 42.95 SONY CMH333 44.95 BATTERY ELIMINATORS ERICSSON HOTLINE 14.50 MOTOROLA 8000/8800X 12.95 MOTOROLA 9800X 12.95 NEC 9A 12.95 NEC P3 12.50 NEC P4 12.95 NOKIA 101 12.95 PANASONIC F SERIES 12.50 SONY CMH-1 14.95 SONY CMH-333 14.50 TECHNOPHONE TP2 12.95 TECHNOPHONE TP405 12.95 P/P CHARGES: COMPONENTS Cl 00 PER ORDER UK SERVICE MANUALS 1.25 EACH CELLULAR TELEPHONES 5.00 PER ITEM EXPORT ORDERS P/P CHARGED AT COST WHEN ORDERING: PLEASE ADD PP VALUE TO ORDER TOTAL THEN ADD 17.5 VAT TO THIS TOTAL DELIVERY BY RETURN ON ALL STOCK ITEMS " MINIMUM ORDER VALUE 15.00'' Cellular dealers wanted TELEVISION MAY 1994 467

1Vlasteor TECHNICAL BOOKS A selection from our range of books for the repair trade TELEVISION CHASSIS GUIDE Full cross reference for all models. Order MP -18. 6.00 TELEVISION EQUIVALENTS Lists models which are the same. Order MP -150. 6.00 FAULT LISTS FOR TELEVISIONS Hundreds of specific faults for dozens of different makes and models. Order MP -205. 700 TEL= REPAIR MANUAL Covers SAA range of boards. Order MP -38. 7.00 TELEVISION REMOTE CONTROL CIRCUITS Dozens of Diagrams on many remotes. Order MP -167. 10.00 TV POWER SUPPLY CIRCUITS Dozens of P.S. circuit stages. Order MP -2I9. 10.00 SCART EUROCONNECTOR SYSTEM Comprehensive details of the system. Order MP -21. 3.00 P.C. HARD DISC DRIVE REFERENCE MANUAL Comprehensive Drive Details. Order MP -84. 5.00 P.C. DIAGNOSTICS SOFTWARE Dozens of programs to aid you in diagnostics of PC's and Drives etc. 2 sets of 7 x 3.5" Discs per set. Set 1. Order MP -250. 12.50 Set 2. Order MP -251. 12.50 VIDEO RECORDER AND CAMCORDER EQUIVALENTS Full Cross-reference guides. Makes A -J. Order MP -218. 6.00 Makes K -Z. Order MP -219. 6.00 FAULT LISTINGS FOR VIDEO Lists Hundreds of Faults for dozens of makes and models. Volume I. MP -206. 7.00 Volume 2. MP -228. 7.00 VHS VIDEO RECORDER PRINCIPLES Detailed guide on how it works. Order MP -58. 4.00 VIDEO TEST JIG Special cassette lets you operate the machine in test mode. Order 1/7. 15.00 VIDEO HEAD CLEANING KIT Special kit with comprehensive instructions on how to service heads. Order WICK 5.00 VIDEO RECORDER FAULTS Unique repair guide for beginners Order MP -5. 3.00 WIRE ANTENNAS FOR H.F. OPERATORS THE Aerial book for Amateurs. Order MP -243. 5.95 REEL TO REEL TAPE RECORDER SERVICING Theory and circuits for repairs. Order MP -201. 4.95 TRANSISTOR RADIO REPAIR GUIDE Comprehensive servicing charts. Order MP -7. 1.95 RECORDER PLAYER SPEED DISC Get your phonograph up to speed. Order MP -8. 0.95 SWITCH MODE POWER SUPPLY I.C. TYPE TDA-4600 Circuitry and operation explained. Order MP -37. 6.00 VOLTAGE REGULATORS, STABILISERS & POWER SUPPLIES Identification and specifications. Order MP -9. 3.00 CMOS DATABOOK Pinouts and circuits for 4000 series. Order MP -10. 5.00 TTL DATABOOK Pinouts and circuits for 7400 series. Order MP -34. 5.00 TRANSISTOR EQUIVALENTS Includes details on testing them. Order MP -24. 3.00 OFFICE EQUIPMENT EQUIVALENTS Photocopiers & Fax machines covered. Order MP -200. 6.00 TELEPHONE CODE LOCATION GUIDE Find the Town from the Phone Code. Order MP -19. 4.00 MANUFACTURERS EQUIVALENTS What makes are the same. Order MP -220. 3.00 The above selection are just a few of the Hundreds of Unique Repair and Data Guides shown in our FREE catalogue - Yours for the asking. Sent FREE with all orders or send 2 a 1st class stamps for your copy TODAY! Order TODAY using Accessna for immediate despatch. All order plus 2.35 Post and Packing. (Overseas 5.00) MAURITRON TECHNICAL SERVICES (4TV1) 47A High Street, Chinnor, Oxfordshire 0X9 4DJ. Tel: O544-351694, Fax: N4-352554, 2 24 TUBES 104 ABBEY STREET. ACCRINGTON LANCS BB5 1 EE WE ARE CALLERS WELCOME 011 0254 236521 232611 CLOSED AT TRADE COUNTER FAX 0254 395361 ALL DAY Hr Answering Service MON-FRI 9-5 pm WEDNESDAY SAT 9-1pm BRAND NEW TV's and VIDEOS SEND LARGE S.A.E. FOR TRADE CATALOGUE We have a full range of TVs and Videos - Multisystems and PAL sets available in stock now. 25" and 29" Stereo Nicam sets including stand plus full warranty BEAT THE BURGLARS VALVES NEW - Branded Boxes -full range- (matched pairs available) ECC81 2.90 ECC82 2.90 ECC83 4.90 ECC85 3.00 ECC88 E3.24 ECL82 3.37 ECL86 3.50 EL34 7.00 NOW A REMOTE CONTROL HOME SECURITY E L84 E3.00 EL519 6.50 SYSTEM WITH CORDLESS DETECTORS GZ34 5.00 KT66 9.75 KT88 18.00 PCL805 2.70 COMPLETE STARTER KIT 183.00 r VAT Easy to install PCL86 3.00 PC504 3.00 Advanced Radio & Microchip Technology PLS19 5.90 PY500A 2.95 Transmitting on FM wavelength Fully protected against radio signal jamming 128Y7A 5.50 6L6GC 5.31 Expandable to most requirements including smoke detection 6L6GT 5.31 6KD6 12.95 Intelligent keypad control panel Full step by step instructions Installation Helpline Conforms to DIY Intruder Alarm Standards BS6707 and Wireless Standard BS6799 (Class IV/Part Al NEW COMPLETE D.I.Y. BURGLAR ALARM SYSTEM - ALL YOU NEED. INCLUDES DIGITAL 4 ZONE PANEL (2 DETECTORS AND THE REST!) ONLY 99 + VAT p.v. WE CATIT UST EVERYTHING THAT WE STOCK OUR RANGE IS WEN- ' SIVE WE HAVE A TRADE CATA- TUBES LOGUE on REQUEST WE ARE ALSO Cal LINE WITH "MOVIES- TO ORDER ANY PHILIPS PART QUICKLY JUST SOME OF THE THINGS WE SUL -AERIAIS. BRACKETS. BATTERIES. CABLE CONNECTORS. CMOS CAPACITORS. COMPUTER ACCESSORIES. DISCS. DIODES. ELECTRICAL ACCESS FUSES ICs. LOPTA. LEADS. MANUALS. PUSH BUTTON LIGHTS, PHONES, PHONE ACCESS, POTENTIOMETERS, RELAYS SEMICONDUCTORS, STRIPBEARD, STYLI. SMOKE DETECTORS SWITCHES,, TUNERS. TV BAT EERY LEADS TV WALL BRACKETS, TOOLS, TEST EQUIPMENT. VALVES AND EVERYTHING YOU NEED FOR VIDEO REPAIRS - HEADS IDLERS TYRES. FINCH ROLLERS. CLEANERS. TEST CASSETTES VIDEO TAPE (Inc BOA and V2000) etc. - THE COMPANY WHERE NO QUERY IS TOO SW. EX-RENTALlYs/ VIDEOS ALWAYS AVAILABLEFRON TRADE COUNTER OFFER SURFACE SINGLE COAX OUTLET 10 for SATELLITE EQUIPMENT Powermid remote xtender 51.00 Pace 900 receiver only 158.00 Pace 900 & 60cm dish/lnb 220.00 Full range of cable, connectors etc. Akai Sat System with 60cm Dish/LWB 170.00 REMOTE CONTROLS for SATELLITE REC's PACE 800/900 E12.95 AMSTRAD SRX 200/SRD400 12.95 MASPRO 250/350 12.95 FERGUSON SRAI 12.95 AMSTRAD SRD 510/520 12.95 PLEASE ASK FOR OTHERS One for all 4 remote control 19.95 Degaussing Coil 27.50 4.00 Custom made leads - we can make up leads to your own requirements - just ask HOW TO ORDER) Up o 1K ADD E2.00 per order P -P (U.K.). Heavier parcels, e.g cables, service aids. degausing coils please allow E4.00 P-i-P (U.K I. Export orders charged at cost. First Class Mail is used whenever possible. Add 17.5% VAT to total except where it states zero rate. Over 3K will be sent by carrier 12.00 * VAT up to 15K (except tubes). We do not despatch on Saturdays. Goods are despatched on the day we receivvur order If for any reason we are out of stock awrien try wit c7ei" t"y service.toin TE informi iynoyuo cr a lc'f'u i.a:a sest.possible. Give quicklyvwuer' u I gicet t oy guivseearvcsee)eaast salr,'3 what you need is not listed - we will try to help. Prices are subject to change without notice. In some cases we may have to supply an equivalent We need expiry dates for credit card orders. MIN. ORDER ES. NSW 1 THE ULTIMATE SCART DIAGNOSTIC SCart rl- t - marruvcrom SCAM CHECICEN vim me MS AUDIO AUDIO OUT IRMA STATUS WV MONT VIDEO POEM, ALAMO TEST TM 0 0 0 VIDEO AUDIO EMU SOS CVOS TEST TEST STATUS STATUS titstraictions,,,,,,,,...,... NO 1.., Nolan... now Ellow..111rol. Mil dad PM 10. Mae mn Imlay. ILLIIIdr* vollekewr. 11 mie LI.OLF1 10. en In 11 LILILOInpollins L INALL. IL oft* Ow 1 millo.... WANTED INSTALLERS FOR WIRELESS SECURITY SYSTEM 61 NO6RSUE CHRIS TOOL ScartAlaster rapidly identifies problems when Interconnecting AV equipment using Scart Euroconnector sockets. ScartJAaster also shows broken or faulty wiring In Scart leads, adaptors and switch -boxes. Connect to signal sources (TVs, video recorders, satellite receivers and decoders, etc) to check audio and video outputs and status command lines. Connect to TVs and monitors to check correct signal switchover.. Confirm video and audio inputs using built -In test pattern and tone generators. The Pocket -sized Suit/Miter Is an essential aid for field service or workshop use. Verifies correct Scan socket operation in seconds Status LEDs show outputs, test signals check Inputs Low power consumption, surface mount technology Special lofduci," Usual price E129.95 der endsm 3A1/5/94Add Add VAT PLUS (Total OfferP pricei 121.55) t VAT Trade enquiries welcome Faxiine 0344 20244 01 ler 1 SOLE UK DISTRIBUTOR INTERCOMMS Box 434, Ascot, Berkshire SL5 00Y VISA Mail Order Sales Hotline 0344 20234 468 TELEVISION MAY 1994

III The Look of the Thing EDITOR John A. Reddihough PRODUCTION EDITOR lessa Winford EDITORIAL OFFICE 081 652 8120 Fax 081 652 8956 Note that we are unable to answer technical queries over the telephone and cannot provide information on spares other than that given in our Spares Guide. ADVERTISEMENT MANAGER Carol Nobbs 081 652 8327 SALES EXECUTIVE Pat Bunce 081 652 8339 Fax 081 652 8931 ADVERTISING PRODUCTION Brian Chapman 081 652 8681 Fax 081 652 8917 PUBLISHING DIRECTOR Susan Downey SUBSCRIPTION ENQUIRIES 0114 445 566 SUBSCRIPTION HOTLINE 24 -hour subscription ordering with credit card number phone 0622 721 666 and quote reference INJ. COVER PHOTO This month's cover photograph shows the Philips GR1-AX chassis. See servicing article on pages 472-477. REED BUSINESS PUBLISHING Do people care much about what their TV sets look like? Alain Prestat, chairman of Thomson Consumer Electronics (ICE), certainly seems to think so. As part of his increasingly successful effort to restore to profitability TCE, one of the world's largest TV manufacturers with brands that include RCA, Telefunken, NordMende, Saba, Brandt and Ferguson, he has hired the French designer Philippe Starck to oversee a product design programme. Prestat is convinced that imaginative design could give Thomson an advantage over its contemporaries Philips, Matsushita, Sony etc. in the intensely competitive consumer electronics market: he feels that consumers are bored with the "grey boxes" that overwhelmingly predominate in the market. "Appealing products with their own identities" is to be the aim at TCE. Philip Starck has been appointed artistic director of TCE but works as a consultant to the company, feeling that it's important to be able to look at what is being done at TCE as an outsider. So far he has spent a year on the project, working in conjunction with the company's marketing and technological specialists and a new 16 -strong European design team at TCE's Paris headquarters. Their first task has been the redesign of TCE's European TV ranges. The new designs will start to appear this month, with launches continuing during the coming year. So far two Starck designs have appeared, one-off Saba and Telefunken sets that were introduced last autumn. The Saba one certainly looks different. Starck aims to give each brand a different personality - Saba is supposed to be "young and funky". The set just mentioned uses green plastic for the tube surround and control panel, with recycled woodchips for the rest of the apparently moulded case. To this observer it's a strange set with virtually no appeal whatsoever. But then I can't claim to be "young and funky". Starck comments that "there's no reason why televisions should have to come in boring cardboard (that's what he's quoted as saying) boxes. We want our products to be fun to buy - just like opening a Christmas present". Angela Dean, European electronics analyst at Morgan Stanley, is reported as commenting that "there probably is a demand for better -looking products: TCE can have a go - but it isn't going to be easy". One can feel reasonably sure about that, anyway. The fact is that design has never really had much impact in the TV market. Looking back, the original Murphy Radio company was probably the first and virtually the only UK setmaker to emphasise design. Bang and Olufsen is the outstanding European example of the design -conscious approach to consumer electronics. There have been occasional attempts at something new and innovatory, for example the Keralacolour sphere, but so far as the mass market is concerned keeping things simple and relatively inoffensive has been the basic approach in recent decades. Design is of course a notoriously difficult subject. Something that excels in one person's eyes is plain awful to many others. Beauty is, as they say, in the eye of the beholder. Appreciating this, or maybe just not giving the matter much if any thought, setmakers and those who market own -brand sets have tended to play safe. Over the past few years the "monitor look" has been widely adopted - those "black boxes" that many view with disdain. Personally, this approach seems to me to be reasonable and acceptable. Visually, 80-90 per cent of what one sees when one looks at a TV set is the screen. There's not much one can do about that other than fit doors, which seem to be clumsy and a bit pointless. Since a blank screen is not a particularly wondrous sight, the best that can be done is to make it relatively inconspicuous. The monitor -style receiver set on a convenient shelf does just that. If you want the set to play a more dominant role as part of an interior setting.. the Bang and Olufsen approach seems appropriate. But what to do if the interior is traditional rather than modern? The set can always be hidden away in an appropriate cabinet - with those doors! (What if you've a house full of pine: I've yet to see a set with a pine cabinet - Philippe Starck can have that idea for free!) The last thing, I suspect, that most people want is for their TV sets to be too intrusive. If what people want is inoffensive, inconspicuous sets, design means keeping it simple and appropriate, for example with controls that are easy to operate and do their job without fuss. Recycled woodchips, bright colours and that sort of thing is unlikely to be widely acceptable. TCE could be on to something or not, depending on how carefully design is handled. TELEVISION MAY 1994 469

Teletopics INTERACTIVE -TV British Telecom's interactive -TV system trial is now underway at Kesgrave, Suffolk, involving about seventy installations. It's called Interactive Multimedia Services and uses software developed by the US company Oracle. Oracle's Media Server is a multimedia library that stores, retrieves and manages various types of programme matter including sound, video and text. The link to the user is via existing copper telephone lines, using a system that's referred to as an asymmetric digital subscriber loop (ADSL). This simply means that a narrow -band, low bit -rate channel is used for the user requests while a wideband, high bit -rate (up to just over 6Mbits/sec) channel is used for the programme link to the user. Two different modulation systems have been used for this type of link. Carrierless amplitude/phase (CAP) modulation, developed by AT&T Paradyne, is being used by Bell Atlantic in its Washington trials. BT however is using a system called discrete multi -tone (DMT) modulation. This offers better line resilience and is being developed by a goup that includes reseachers at Stanford University, Motorola and Nothem Telecom. It now seems that cost is likely to be a problem: BT is tending to regard I -TV via copper wires as an interim technology, broadband optical -fibre technology offering a better long-term solution. The set -top decoderreceiver being used in the BT trial has been developed by Apple Computer. Companies that are providing programme material for the trial include the BBC, Carlton TV, EMI Records, Granada TV, LWT and Thames TV. Tele-Communications, the largest US cable TV operator, is to start I -TV trials later this year in Seattle, using technology being developed jointly with Microsoft. Bill Gates, Microsoft's chairman, believes that systems offering a wider range of information than simple domestic services are more likely to succeed in the long run. Microsoft hopes to test a cable TV network dedicated to personal computing from April 1995. The aim is to develop an easy -to -use interface with a lot of applications. Time Warner, the second largest US cable TV operator, has delayed the start of its I -TV system trial at Orlando, Florida until the end of the year. The postponement is to enable additional system software and set -top terminal refinements to be developed. A small US company is developing a laser -based remote control unit, called the LaserMouse, as a low-cost data input device for use with I -TV set -top terminals and other interactive systems. It employs a patented process that detects angular motion, so that the user can wave the device in the air to control the position of a cursor on the screen. It does not require line -of -sight operation. Because of its motion - detecting feature the device is particularly suited to video games use. BUSINESS NEWS Philips is to pay its first dividend since 1990 following a return to profitable operation in 1993. Cost cutting and reduced financing charges rather than any improvement in market conditions produced the turnaround. Losses made by Philips' largest business, consumer electronics, fell to just F173m: continuing heavy losses at the company's affiliate Grundig prevented a return to profit in this sector. Losses at Grundig 470 have actually increased: Philips is seeking a drastic reduction in costs, including the loss of 4,000 out of 15,000 jobs. At the operating level Thomson Consumer Electronics, which is owned by the French government, returned to profitable operation in 1993. As a result of restructuring and debt charges however the company remained in the red. Alain Prestat expects a return to full profitability to take another eighteen months. Last year employment in the company, whose brands include RCA, Telefunken and Ferguson, fell by ten per cent to 49,000. Scottish Power is to buy fifty superstores from the receivers of Clydesdale. The deal will safeguard about 600 of the 800 jobs at risk. Clydesdale was the UK's third largest electrical retailer when it went into receivership in January. Marco Trading of Wem, Shrewsbury has called in the receivers. Gooding Consumer Electronics and Grundig A.G. have set up a joint venture, Grundig Satellite Communications Ltd., to manufacture and market satellite receiving equipment. The company is owned seventy per cent by GCE and thirty per cent by Grundig. Production at its Llantrisant, Mid Glamorgan plant was due to start at the end of March. Employment is expected to reach 400 by the end of the first year and 600 by the end of year three, when production should be running at a million sets a year. Seleco brand TV sets are to return to the UK market, where they were last sold in 1989. Owl Video Systems, 8/9 Horstead Square, Bellbrook Industrial Park, Uckfield, Sussex TN22 1QW (0825 766 123) will be responsible for distribution of the Italian manufactured sets. SERVICE NOTES Toshiba has available, at 33 including VAT and a free -of - charge annual update, a binder that includes in easy to refer to form all TV and VCR fault conditions known to Toshiba - not just those issued in the company's Technical Bulletins. It's called the Toshiba Technical Repair Data Book, part no. TTRD93. We understand that spares for Huanyu products are available from Huanyu (UK) Ltd., 43 Skyline, Isle of Dogs, London E14 9TS, telephone number 071 363 0213. Carlton Television is providing current transmitter information on ITV (London) teletext page 690. It's part of Carlton Plus, the company's ancillary broadcast support service, which started in January. There's also a clock cracker on page 699. Carlton Television is moving towards full implementation of a PDC service: at the moment there are PDC compatible listings, with sufficient data for timer control, on pages 601 and 602. xbase Computing, 19 Great George Street, Bristol BS 1 5QT (0272 290 846, fax 0272 290 807) has released at 99.95 plus VAT a budget version of its F4 service software package, which is designed for consumer electronics and electrical trade use. Called F4 Junior, the new version is intended for the small workshop or retail outlet that handles up to 500 jobs a month. All the usual job and customer tracking facilities are included. NEW AMSTRAD SATELLITE RECEIVERS Amstrad has launched a series of 'enhanced wideband' satellite receivers that will enable viewers to receive transmissions from the Astra ID satellite without LNB modification or the use of a switching box. Prices of the new receivers start at 150 exluding the dish. Amstrad is also offering, at 50, an Astra ID switching box that can be used by owners of earlier models. TELEVISION MAY 1994

PRONAAX ELECTRONIC TEST EQUIPMENT Audio - Video- Television - Satellite TV - Telecommunications The manufacturer who cares about quality & features rather than being just lowest in price _.1118111111111111111111116_ Audio Analyser Model AA -930 Multi -function meter. Measures distortion, wow & flutter, stereo power, signal levels in & out; generates audio test signals Features include large clearly marked analogue meters. Performs the work of many individual instruments. 490 Function Generators Models GF-230 & GF-232 Low Distorsion Low Frequency Generator Model GB -212 20 Hz to 200 khz, harmonic distorsion 0.02 % maximum over audio band. Frequency counter 'esolution as high as 0.1 Hz. 600 ohms Impedance. Output level attenuation range 60 db, with analogue meter for setting accuracy. Excellent output level 'latness. 219 Television Pattern Generator Model GV-698/11 32 patterns, 32 internal memories. PAUNTSC/SECAM standards, with I, B, G, H, M, N, D & K, NICAM, teletext all in one instrument. Optional on screen logotype. (Other pattern generators available from 210). 1428 Television Pattern Generator Model GV-298 Compact high performance generator, RF and video outputs. Frequency range same as GV-698/11, 37 to 865 MHz. Circle pattern included. 433 TV & Satellite Level Meter Model MC -360 Two versions available: 0.1 Hz to 1 MHz and 02 Hz to 2 MHz. Producing sine, triangular and square waveforms, with variable symmetry. Excellent performance. 153 & 206 CRT Rejuvenator Model TA -903 Similar to TA -901, but has three meters to monitor cathode current. Special technique allows repeated rejuvenation of CRT. Supplied in attache style case, for easy field and workshop use. 498 CRT Rejuvenator Model RT-501 B An essential tool for every TV workshop. Promax have made many thousands. Supplied complete with a set of base adaptors. 235 Ideal insfir ment for the professional installer cf FM/TV aerials and satellite TV dishes. Covers 48 to 856 MHz and 950 lc 2050 MHz. Lighweight, compact Ind rechargeable battery operate? 654 Frequency counters Models FD -250 & FD -252 FD -250 divers 20 Hz to 160 MHz and FD -252 covers same, plus 100 MHz to 2.4 GHz. Large L.E.D. display. Wide performance at low cost. 153 & 206 TV & Satellite Level Meter Model MC -944 R.F. Spectrum Analyser Model AE -566 1 to 1000 MHz, with 950 to 1750 MHz option. Built-in tracking generator. Offers spanwidths from 1 MHz to 1000 MHz. Includes normalizer. This analyser is ideal for production and educational applications, as well as R+D. 2800 TV/FM Level Meter Model MC -160 B Tne aerial installers best friend. Calibrated for aurate signal level measurements. Digital frequency display ensures correct signal selection and identification. Built-in demodulator for easy station ident, and audible tone for easy positioning. This meter is light in weight, but has outstanding technical features. 354 UV/ This meter has everything for the top flight installer of aerials, dishes, CCTV, MATV SMATV and other systems. Features include TV monitor, spectrum analyser, sync pulse, teletext, printer output, 99 memories, tuneable audio subcarriers, etc. Full autocorrection for superb, unequalled accuracy!. RS -232 as standard. 1895 ikk PR 0 AX The company has been producing test equipment in Spain for over thirty years, earning a strong reputation for excellent engineering, quality performance at budget prices. The equipment is supported by Alban Electronics from their St Albans facility. These products are suitable for only professional and educational applications and enquiries. Oscilloscopes We are able to supply a complete range of osciiloscopes. These include both analog and digital types, covering bandwidths of 20 MHz to 100 MHz. We are able to prepare quotations for a specified vantity. wrir Prices shown exclude VAT, but includes UK delivery. immit Most items available (Dr* immediate despatch. ALBAN ELECTRONICS LIMITED 4U - St Albans Enterprise Centre - Long Spring Porters Wood - St Albans - Hertfordshire - AL3 6EN Tel: 0727 832266 - Fax: 0727 810546 TELEVISION MAY 1994 471

Servicing the Philips GR1-AX Chassis Steve Cannon The GR1-AX was designed to drive 90 tubes with screen sizes from 14 to 21in. Although it was introduced back in 1989, many engineers are still not familiar with it. The unusual power supply - a self -oscillating series chopper that uses a power f.e.t. device - could be one reason for this. When it comes to repairing a switch -mode power supply with a BU508 or one with a f.e.t., the latter will tend to be put to one side. There were several versions of the chassis, with quite a number of differences. They depend mainly on the country of origin and the serial number. The service manual lists the main component differences. There are also some differences in the plugs and sockets. The following description and service notes should however apply to all sets. The Power Supply The basic power supply circuit is shown in Fig. 1. It's known, curiously, as a BUCSO type. This stands for Buck Converter Self -Oscillating type. There is no sync feedback from the line output stage. Note in particular that the chassis is not mains isolated. Thus caution is required when fault-finding in the power supply or indeed anywhere in the set. The power supply generates three outputs: a 95V h.t. supply for the line output stage, a 9V supply for the audio output stage and a 5V supply for the microcomputer control chip and related circuitry. This latter supply is derived from a potential divider network connected across the output from the mains bridge rectifier. The main thing that stands out is the chopper transistor itself, Tr7610, since it's a f.e.t. This type of transistor is now becoming more common in power supplies. But basically, f.e.t. or no f.e.t., the power supply operates on similar lines to any other type of switch -mode power supply. Circuit Operation At switch on Tr7610's gate is forward biased via 83610 and R3613 and it conducts. Zener diode D6613 sets the voltage at the junction of R3610 and 83613, with R3613 and R3611 acting as a potential divider to further reduce the voltage at Tr7610's gate to approximately 4.8V. Tr7610 is connected as a blocking oscillator, with positive feedback to its gate via the secondary winding (pins 2-13) on the chopper transformer T5610, C2613 and R3612. Zener diode D6610 limits the gate voltage. We now have to switch Tr7610 off. This is where the pulse -width modulator circuit, transistor Tr7614 and its associated components, comes in. The error sensing transistor Tr7628 sets the d.c. conditions at the base of Tr7614. Its other input consists of a sawtooth produced by the integrating circuit R3618/C2616 from the pulse developed across winding 4-11 of the transformer when Tr7610 conducts. When the sawtooth rises to a sufficiently positive value, Tr7614 conducts, shorting to chassis the gate of Tr7610 which is thus switched off. At this point the voltage at pin 2 of the transformer swings negatively and diode 472 D6620 conducts, providing an efficiency diode action. During this part of the cycle the energy in the transformer charges the h.t. reservoir capacitor C2660. The voltage at pin 4 of the transformer also swings negatively, discharging C2616 via R3617 and D6617. Thus Tr7614 switches off. Once the energy in the transformer has been transferred to C2660, D6620 switches off. C2620 then charges, producing a positive pulse which, via C2613, switches the chopper transistor Tr7610 on again. The cycle has thus been completed and the process continues, with Tr7610 being switched on and off. Regulation is achieved by controlling the point at which Tr7610 switches off. This is determined by the error sensing transistor Tr7628 which sets the d.c. voltage at the base of Tr7614, and can be adjusted by means of the set-h.t. control R3625. Tr7614 is also used to provide the standby condition. When standby is requested pin 19 of the microcomputer control chip IC7700 goes low, switching Tr7631 on. The positive voltage at its collector then switches Tr7614 on and, since this shorts to chassis the gate of Tr7610, the power supply shuts down. It starts up again when Tr7631 and Tr7614 switch off. This feature is included only in sets with remote control. Overvoltage Protection Overvoltage protection is provided by thyristor Thy6641 and its associated components. Zener diodes D6638/39/40 monitor the h.t. voltage. If this rises above the combined zener level the diodes conduct, firing Thy6641 which thus shorts the h.t. to chassis. The power supply senses the over - current condition via winding 4-11 on the transformer, switching on Tr7614 to shut the power supply down. In earlier sets the conditions in the line output stage are also monitored, via zener diodes D6646/47 and the 1N4148 diode D6645 whose anode is connected to one side of the heater winding on the line output transformer. The Microcomputer Chip The microcomputer chip IC7700 is type TMP47C434-3559. It carries out the usual functions such as remote control and keyboard decoding, tuning control, video and sound control, standby selection and on -screen display generation, with connections via an I2C bus to the X2402 EEPROM IC7785 which stores the tuning and preset information. For these chips to operate correctly they must be provided with a rock -steady 5V supply, a power -on -reset (POR) pulse must be correctly applied and the 4MHz oscillator must be running at the right frequency. Transistor Tr7674 in the power supply acts as a series regulator for the 5V supply. The power supply also provides the reset pulse for pin 33 of IC7700 - it's generated at the collector of Tr7673. Once a supply voltage is present, for IC7700 to be initialised at switch on the reset line should remain low for lmsec. At switch on Tr7673 is in its off state and the reset TELEVISION MAY 1994

ri D6613 BZV85-C15 R3668 2n2 06602-5 290V 330p 93616 R368 1 L5611 3Ek t L5612 L5621 2 3 T5610 2 06629 BZX79-CIiV2 R3669 L5660 95V 2n2 93602 b C2606 68 R3610 3304 R3613 120k Tr7610 L5513 D6610 BZX79-C10 *194148 t Omitted In some versions R3611 56k L5620 D6620 BYD33J R3612 1k8 C2620 13 1n C2613 33n 1k 193625 470 et 95V 10n 22 33k L5640 06642 BYD33D D6644* *D6643 Thy6641 5F2041 06638 C2660 -B36 BZX79 I 47 D6639 BZX79-1336 D6640 Over -voltage BZX79 sensing D66474. -1330 from 16V LOPT D..46+ 06645 16V * 0.22 R36020 D6618 BZX79-C18 R3518 1k3 68"1_6118i_ 1k8 10k R3614 6k8 L5614 Tr7614 D6635 BYD33D 9V Tr7628 BF423 Tr7674t BC548 5V 0.47 F1600 2AT D6617 L5617 R3 33617 C2616 150 T 820p D6614* 1000 10k 06571 BZX79 -B5V6 Tr7673 BC 558 POR to micro chip D6675 BZX79-B4V7 Mains G. C. 4M7 1k5 Standby command C2631me 22n1 Tr7631 BC558 47k R/C sets only 02901 Fig. 1: The switch -mode power supply circuit used in the Philips GR1-AX chassis. Some component types/values vary and there were several alterations in circuit detail during the production run. line is low. Once the voltage at its base rises to 5.6V zener diode D6671 and Tr7673 conduct and the reset line rises to 4.7V. By this time the 4MHz oscillator (pins 31 and 32) has been kick-started and initialisation has been completed. The following checks are made within IC7700 during initialisation: (1) The internal RAM is tested. If a fault is found, a flashing LED displays error code FO. (2) The presence of a diode between pins 10 and 14 is checked. This tells the chip whether or not the set has remote control. If D6737 is present the set doesn't have remote control and can't be put in standby. (3) The presence of a diode between pins 11 and 14 is checked. If diode D6736 is fitted here only u.h.f. operation is possible. (4) The presence of a diode between pins 12 and 14 is checked. If diode D6735 is present the set comes on with programme 2 instead of programme 1. This is apparently for Australian sets, though why the Aussies want their sets to switch on with programme 2 escapes me for the moment... (5) The internal dividers and remote input are released. (6) The status of the set when it was last switched on is checked. If it was in standby when switched off, it comes on in standby. (7) The stored volume, brightness, colour and contrast settings are read from the EEPROM and supplied to output pins 2, 3, 4 and 5 respectively. The chip's internal timers are tested. If they are not working correctly a flashing LED displays error code Fl. At the end of this sequence the microcomputer chip should, provided no errors have occurred, be fully operative. Tuning The tuning voltage data, a pulse -width modulated (PWM) signal, appears at pin 1. It's used to switch transistor Tr7706. This is connected to the 33V tuning supply and establishes the required tuning voltage output in conjunction with an integrating filter. Once tuning has been initiated, pin 2 of the chip goes low to mute the sound. The a.f.c. action needs to be overridden, so pin 41 goes high. This switches on transistor Tr7786 which produces 6V, the nominal a.f.c. voltage, at its collector for application to the a.f.c. pin 9. The PWM tuning signal's duty cycle then starts to decrease and the tuning voltage, via Tr7705, increases. When a station is found, pin 16 receives a high input from pin 22 of IC7020 (the TDA8305 multi -function chip) via transistor Tr7046. The output at pin 41 then goes low so that the chip can measure the a.f.c. voltage. Once this reaches 4.5V fine tuning begins, i.e. the chip varies the duty cycle of its PWM tuning output at a slower rate. The tuning voltage is gradually increased until the a.f.c. voltage at pin 9 is 7.5V: it is then decreased to produce a 6V a.f.c. level. The tuning is then spot on and the micro is ready for a programme number to be entered and stored. Other Controls Volume, brightness, contrast and colour are adjusted via an on -screen display menu. The micro chip has four 6 -bit TELEVISION MAY 1994 473

registers available for these settings. Thus the customer controls can be at any one of 64 settings between minimum and maximum. The PWM outputs at pins 2-5 are integrated to produce the control voltages which vary between OV (minimum) and 5V (maximum). The chip has a sleep -timer function that operates via the remote control system. When this function is activated the set goes to standby after a given time. Maximum time, which can be reduced in steps of fifteen minutes, is ninety minutes. On -screen Display The green on -screen display (OSD) provides a search tuning bar, timer information, the programme number and the customer control value settings. It's synchronised by a field sync pulse that's fed in at pin 27 and a sandcastle pulse input at pin 26. The OSD output, at pin 23, is applied to Tr7760 whose output is fed to the green output stage on the c.r.t. base PCB. An LC network connected between pins 28 and 29 determines the frequency of the OSD generator. The fast -blanking output at pin 25 is used to suppress the TV signal where the OSD is to be shown. Hotel Mode If you're a landlord, a useful function with early sets is the 'hotel' mode. This has probably caught out many an unwary engineer, myself included. It can be switched on by selecting programme 38 then pressing the store and prog + keys at the same time. Once in this mode it's not possible to store either tuning information or the vaues of the customer control settings, the sound won't adjust louder than the previously stored value and when the set is switched out of standby it will come on with programme 1 rather than the last one selected. Now the useful bit. To disable the hotel mode, select programme 38 again and this time press the store and control + keys simultaneously. Error Messages The micro chip can generate three error messages which are displayed by the front LED flashing. The error is indicated by the LED's off time, the on time always being 50msec. These messages are as follows: (1) FO, LED off time 50msec. Internal RAM fault - replace IC7700. (2) F 1, LED off time 100msec. Internal timer fault - replace IC7700. (3) F2, LED off time 150msec. EEPROM fault. Either the EEPROM chip is faulty or the +5B voltage is incorrect. Video Signal Path After passing through the tuner and the i.f. section of the TDA8305 chip IC7020 the video signal is buffered by Tr7040 and fed to the TDA3565 colour decoder chip IC7300. Pin 3 is the chroma input, pin 8 the luminance input, pin 5 sets the colour level, pin 6 the contrast and pin 9 the brightness. Pin 6 is also used for beam -current limiting, via R3552 and D6551. The reference oscillator operates at 8.8MHz (the crystal is connected to pin 16) and the sandcastle input is at pin 7. The red, green and blue outputs appear at pins 10, 11 and 12 respectively. These are fed to class A output stages, operated with a 160V supply, on the c.r.t. base panel. Tr7402 provides a stable bias source for the RGB drives, setting the black -level. The Timebases The TDA8305 chip IC7020 provides i.f. amplification and demodulation, audio and sync processing and produces line and field drive outputs. For the line timebase and hence the set to get going a kick has to be delivered to the line generator part of the chip from the power supply. There's nothing new about this, but the unique thing here is that the pulse is delivered to the the volume control input, pin 11. When the set is first switched on C2058 (22µF) charges from the 95V line, applying a pulse for a short time to pin 11. This enables the line oscillator to get going, and the line output stage comes into operation. A 12V supply derived from the line output transformer then takes over, providing a feed to pin 7. The chip is now fully operational. The composite video input signal is fed to the sync separator via pin 25. As well as going to the sync circuits the output from the sync separator is fed to an identification stage which tells the microcomputer chip, whilst tuning, whether a station has been found. This output appears at pin 22, where it's applied to the base of transistor Tr7046. A sandcastle pulse output at pin 27 goes to the colour decoder and micro chips. The line drive output appears at pin 26 and is fed via the line driver and buffer transistors Tr7521 and Tr7523 (no line driver transformer) to the base of the line output transistor Tr7528. The type of transistor found here depends on the set's screen size. With a 14in. tube it's a BUTIIAF while with a 21in. tube it's either a BUT12AF or, in later versions, a 2SC3795B. The line output stage is very simple, with no EW modulator. The 95V h.t. is fed to pin 6 of the transformer via R3530 (4.7Q) and L5532. Taps on the transformer produce, with the associated rectifiers and filters, 160V for the RGB output stages (pin 1), 26V for the field output stage (pin 2), the +5B supply (pin 4), the heater supply (pins 8 and 9) and a 12V supply (pin 3) which is separately filtered to provide the +12A, +12B, +12E and +12F lines. The e.h.t., focus and first anode voltages are obtained from the diode -split section of the transformer, pin 7 at the chassis end of this section providing a beam monitoring point. Pin 3 of IC7020 provides the field drive output which is fed to the TDA3653B field output chip IC7500. Again this is all very straightforward. Pin 5 drives the field scan coils. If the voltage at pin 8 falls below 2V, indicating no flyback or deflection current, a positive voltage is produced at pin 7. This is linked via diode D6515 to the sandcastle pulse line, blanking the screen to prevent phosphor bum. Fault Finding As with any chassis, most faults occur in either the power supply or the line output stage. Great care must be taken around the f.e.t. chopper transistor when fault-finding in the primary side of the power supply - the transistor will probably be destroyed if an attempt is made to measure the voltages at its connections. The power supply won't run with a 60W or 100W bulb as a dummy load. But if there's no fault in the power supply it will run quite happily, producing the correct h.t. voltage, when the h.t. smoothing coil L5660 is disconnected to give an off-load condition. Tracing the cause of a dead set when the h.t. is present can be quite perplexing. This condition usually means that there's a line timebase fault, but the cause could be in the line drive/oscillator section or the output stage. As we've 474 TELEVISION MAY 1994

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Price of Kit Case ( x 6"x 2 1/4") app Optional Sound Module (6MHz or 5.5MHz) Built & Tested in Case including Sound Module Post/Packing 4.50 Add VAT 17.5% TO ALL PRICES 79.00 19.00 5.90 129.00 PAL COLOUR BAR GENERATOR (Mk4) * Output at UHF, applied to receiver aerial socket. * In addition to colour bars R -Y. B -Y etc. * Cross -hatch, grey scale, peak white and black level. * Push button controls, battery or mains operated. * Simple design, only five i.c.s on colour bar P.C.B. * Backup service available. PRICE OF MK4 COLOUR BAR GENERATOR KIT 39.00. CASE 5.80. BATT HOLDERS 4.20 MAINS SUPPLY KIT 5.80 (Combined P&P UR) VHF MODULATOR ICH I lu 41 FOR OVERSEAS WM. EASON.ADAPTED EOR 5 u 11(0 EMT & C.U.T.V. ADD VAT 17.5,, LINE OUTPUT TRANSFORMER TESTER * Service Aid. ** Saves time and money. * Checks short turns. * Simple to use. * Reliable. * Battery operated. * Pocket size. PRICE 24.00 POST/PACKING.2 50 ADO %Al INFRA RED REMOTE CONTROL TESTER * Pocket size. * LED + audible indication. * Simple to use. PRICE 20.00 POST/PACKING 2.50 KITS AND PROJECTS SAW IF AND TUNER UNIT complete and tested for video & audio outputs 28.50 p.p. I.80. PAL DECODER KIT (Video to RGB) for Monitors 27.00 p.p. PAL ENCODER KIT (RGB to Video) 20.00 p.p. 1.80. CRT TESTER & REACTIVATOR KIT For Colour & Mono complete with Case, Panel Meter Indicator - can he adapted for latest CRTsf45.00 p.p. 4.50. AN552I 13.80 AN59011 2.20 BA6209 3.80 BA6219 3.80 BA6229 0.00 1A6238A 2.00 L3.80 Cl LiFliCi07 114.40 CNX62 14.50 HAIL!!! 12.00 HA11423 13.110 HA51338SP 21.50 LA4445 13.80 LA4520 L3.80 LA7800 1.00 LA7520 12.80 LA78111 13.50 LA7820 13.80 LA7830 12./10 M104131 L6.80 M293111 15.50 M490L1131 L14.80 M491/1/11 19.80 M494 /9.80 M(.13002P 45.80 MDA2062 13.50 ML237 23.01.1 ML9.26 14.80 MN15425 115.50 SAA1024 15.80 SAAIO25 L5.80 SAAI124 L3.50 SAA1250 13.80 SAA 1251 0.40 SAA 1293 02 08.80 SAA1293 03- E16.80 SAA5000 L6.80 SAA5010 5.80 SAA5012 5.00 SAA5020 L5.80 SAA5030 6.80 SAA5041/ 16.80 SAA5050 11.80 SAA52.31 7.80 TV & VIDEO SPARES REMOTE CONTROLS Replacement tor: Ferguson, Hitachi, Philips, Panasonic, Grundig, ITT, Sony, Saisho, Granada, Saisho + many others Phone for make and model no. IC SELECTION SAA5243 23.50 TA7680AP 15.50 TDA261.10 16.80 SA133035 19.80 TA7681P 7.80 TDA2611A 1.90 50133037 01.80 TA71598P 6.00 TDA2640 13.20 SAFI032 4.50 TA57.39P 4.50 TDA2653A 5.00 SAF1039 12.20 TBA12.115 11.20 SL470/471 14.00 TBA 750 12.20 TDA2654 5.70 T0A265513 16.60 TDA2670 13.20 1 DA2600 13.00 SL456 13.20 13.80 FBA 920 TBA95U 12.80 12.20 SL1430 12.40 TCA27U 11.80 TDA2690 L3.00 SL1432 12.40 TCA5011 16.116 113A2780 L6.80 SN762260N 1.00 TDA1U35T 12.40 TDA3190 14.20 SN767u5 19.00 113A1037 11.90 T0A3301 6.00 STK5325 16.80 TDA1044 12.90 T0A3303 19.00 STK5326 16.80 1-0010130 13.80 T0A3330 112.50 STK5332 6.00 1-001082 14.80 T13A35(5) 6.00 STK5313 8.80 TDA1170S 1.80 T0A3505 14.50 ST115335 16.80 TDA1180 L2.20 TDA3510 19.00 STK5337 17.00 TDA.11902 12.20 T0A3541J 2.50 STK5339 16.80 rda 1432P 15.70 TDA3541 13.50 02.105342 L4.110 11.401512 L3.20 TDA3561A 15.80 STK5392 16.00 TDAI515 4.50 TDA3562A L5.80 STK542I 16.80 TDAI524 /6.80 1'DA3565 3.80 STK5422 118.50 TLIA1670A 13.20 T0A3566 L5.80 STK5471 16.50 TDA1701 13.50 TDA3571 14.20 STK548I 15.210 TDAI77UA L3.20 TDA3576B 9.80 STK5402 5.00 TDA1870 16.80 TDA3640 L5.20 STK3490 17.80 TDA1072 19.80 TDA3650 19.00 STK6962 13.80!DA 1908 2.00 TDA3651 14.20 STK7300 6.50 TDAI940 3.20 TDA3653A 4.1.80 STK7348 110.80 TDA7950 3.50 T13A365313 13.20 STRD4420 L4.80 TDA21104 2.80 T0A3654 L3.20 STR3125 14.80 T1A2040 /7.80 TDA.381(1 15.50 STR441 115.80 TDA2150 L3.20 TDA4420 12.20 STR450 111.40 TDA2270 3.80 T0A4426 13.20 STR451 114.80 T0A2540 12.20 TDA4427 13.20 STR454 14.80 T0A2548 5.80 TDA4442 2.80 STR4211 16.80 T0A2576A 17.80 TDA4443 7.80 STR5412 19.00 T0A2577A 4.80 T0A45U0 5.80 S7R40090 16.80 T0A2578 13.80 TDA4501 17.80 STR5111.120 6.80 TDA2579 3.80TDA4502A 13.50 STR50103 15.80 10025131 6.80 TDA4503.5.80 STR54041 6.80 T0A2582 L2.80 T0A4505 16.80 STR581/41 16.80 TDA2593 11.50 11304555 19.80 STIC19041 16.80 TDA2594 3.80 TDA4601/ 23.85 STR6020 17.80 T0A2595 14.80 TDA4601 12.80 LINE OUTPUT TRANSFORMERS p p 1 60 TDA46I0 6.00 TDA4951) 11.611 TDA5510 12.50 row5830 12.80 TDA7052 12.50 TDA8153 17.80 TDA8170 3.00 TDA818U KA 7.50 TDA8190 13.80 TDA83U5 9.80 TDA8341 14.20 TDA9403 63.80 I009503 3.00 TDA9513 14.50 TLAIIAN 12.20 TLA1014 13.50 TLAI039 12.80 TLA2UI8A L2.20 TLA202.9 L5.59 TLA2164 1I.95 TLA.7.165A 6.80 TLA5I15 /6.54/ TMSIOUON21 113.80 TMP47C432AP- 8185 01.95 114P47C432AP 8189 15.50 TMP47C4.34N- 3555 116.80 TMP47C434N 3559 15.80 TUA21411 18.56 1.14606 14.80 UC3044 12.50 UPC13631. 15.80 UPC1363LA 15.00 UPC1376 11.90 UPC1394 23.00 UPCI4201 A 112.20 UPC1458 13.20 UPD13971 /4.80 IC p.p 90p AMSTRAD 2N5(. PHILIPS K40 127.50 60,01 1C11.1.1, 2800 AT207781 23.:0 PHILIPS 3A 120.00 BUSH AT2U79/10 134.10 PHILIPS 213. /20.00 FIDELITY Z-X2UUU 15.50 PHILIPS CFI 123.00 FIDELITY Z.S.3110U 114.,10 PHILIPS CP90 117.80 FIDELITY Z.X31115) "" 21.30 PHILIPS CP111/ 132.00 HINARI CT4 CT5 /14.00 PHILIPS Cr13 I AX 125.90 HITACHI CPT1455. 1456, 1470, 2434141 PHILIPS NC) 22.95 1117.50 SASSO CT14K. c7141. 3714002 19.80 HITACHI CPT1446, 1626 2432981 118.00 SAISHOCT1418, C.714213 3214009 134.80 HITACHI CPT2I74, 2176, 2178 2434274 17.30 SANYO CHP2144, 21 45 122.50 HITACHI CPT2476, 2478 2434002. SANYO C-TP7132. 7135 1'39.80 HITACHI CPT21./74. 2274 2433752 16.00 SOLAVOX 14R19 116.50 ITT/NOKIA Cumpaci Li.1107.. 17.50 SOLAVOX 16819 116.59 IIT/NOKIA Compact 80. 1101 115.60 SOLAVOX 20119 21.80 IIT/NOKIA Compact 00. 90" 114.10 SOLAVOX 221(19 1I5.00 ITT/NOIOA Compact 50. 110" FS1 119.30 S()LAVOX 22519 115.00 ITT/NOK1A CVC 25, 30, 32 10.00 SOLAVOX 227'09 115.00 ITT/NOKIA CVC 800, 801, 803. SOLAVOX 22119 115.00 /21.80 ITT/NOKIA CVC1150. 1175 /14.95 SONY KVI44U. 1400 20.00 ITT/NOKTA CVC1200, I24/1, Mini 2 L21.50 SONY KVI882 124.80 17T/NOKIA CVC12.04,, LI 1. AI SONY KV2U56, 2062 132.00 ITT/NOKIA CVC1210/12/15/17 15.50 SONY 2212 2216, 2217 24.56 ITT/NOK/A Digs 3. 111' 1 8.15 SONY KV.HKRTH E52.00 ITT/NOKIA Core 90" 45I5 -U3-46 119.110 SONY KV2252/56, 2752150, 2702/60PL, 129.00 ITT/NOKIA Core 110", 45158348. 119.30 SONY KV2704.,, 129.00 TIT/NOKIA Curt: 110.1=ST.. SONY KV27X13-113 125.00 LOEWE 1:91.100, Art 1, Art T21, Art 1.28, Unlink THORN/FERG TX9 23.50 1-24, T28. Proet T26 THORN/FERG TX10 (Chup/Li ) 119.50 LOEWE C0001. CLL..: M24, 5127 S28. (Annum THOILN/FERG TX5.5, 86 119.80 5124. 5I27, S,25. S24. S28, Pro!, S2/5 222.00 123.50 LOEWE CC... MI24. M27, Contur M17 THORN/!ERG 1'X9)) 14','1',31. Rcd Spulm. 134.10 LOEWE PruL M21.,, THORN/FERG TVA/ 20-.19044, Whitc Slot LUXOR 5810:10 (11 L27.60 116.00 MATSUI 1440A, 1480A. 37141102.. 19.00 THORN/!'ERG TX100/1 Br 16033L, Ork,en Spot MATSUI 14206, 14408, 3214009 -, 14110 MATSUI 1451 L12.29 THORN/I/ERG Txtou,nr 243892, Yellu. Spot MATSUI 1465 134.00 119.80 PANASONIC TLF14520F. TLI, 145.0-24.00 THORN/I/ERG TX101//110" PST, 1-60451. 16.00 PANASONIC 7' 0,'145-24.101 THOR.N/FERG TX100/90". TH131. Him: Spot PANASONIC TLF145841/ 129.00 u 5.00 PANASONIC TU.' 145361, 29.00 THORPUFERG TX100Chupper Tx. 115.80 PHILIPS KT) 12.90 THORN/FERG 51P7 02.00 PHILIPS KAI 122.30 THOILN/FERG ICX25. 440701110 /28.00 PHILIPS CTX-L 5 /23.110 THORN/FERG ICC5. 47235901 21.80 PHI LIPS KT., 22..0 THORN/FERG ICC5, 47238700 118.00 P1111 IPS.7A THORN/FERG ICC5, 59MS 28.00 st 319 OTHER torrs IN STOCK, PLEASE PHONE WITH MAKE AND MODEL NUMBER TRIPLERS EHT CONTINENTAL UNIVERSAL TVK & BG RANGE (Quote exact no.) 13.80 1.% K 96.1 13.80 K 96-3 118.00 C.K. UNIVERSAL (best quality) 7.80 MULTIPLIERS p.p. 1.80 DECCA/TATUNG BG 200/44 TYPE 7.80 GRUNDIG BG 2077-642-1003/1004 116.80 GRUNDIG BG 2087-642-1001/1002/1006 16.80 GRUNDIG BG 2000-641 13.80 THORN 9000 9.80 MISCELLANEOUS p.p. 11.80 MAINS TRANSFORMERS: 6.3 Vohs CRT bow VCR FAULT FINDING GUIDE 14.80 16.80 p.p. 11.30 HITACHI FRAME MODULE HM 6251, Mains Isolatieg 501.1VA 15115 p.p. L3.25 111416232 9.80 455 CRYSTALS for handsets. 4 for 12.00 p.p. HO DEGAUSSING ROD 133.75 p.p. 1.3.S0 TRANSPARENT VIDEO SERVICE CASSE1TL 16.80 p.p. 11.50 TV FAULT FINDING GUIDE 14.80 HITACHI THERMISTOR TH902 2.40 FERGUSON TXIO FOCUS UNIT 18.50 p p 1.80 PHILIPS BACK UP BATTERY: 2 4V L3.00, 1.2V 2.00 p.p 90p HOW TO ORDER: ADD p&p TO ORDER + VAT 17.5% TO THE TOTAL PRICES ARESUBJECT 10 CHANGE WITHOUT NOTICE Telephone 071-794 8751/794 7346 Fax 071-431 5778 MANOR SUPPLIES 172 WEST END LANE, LONDON NW6 1SD CALLERS WELCOME AT SHOP Mon -Fri 9.30-6pm - Than 9.30- I pm - Sat 9.30-5pm VISA TELEVISION MAY 1994 475

seen, the TDA8305 chip requires a start-up pulse at its volume control pin to get the line oscillator going. A scope check at pin 26 when the set is switched on should show the presence of line pulses for a brief period. If these are present, the cause of the fault is likely to be in the line output stage. If the pulses are not present, the fault is probably in the line driver stage or the line oscillator. A check should of course be made to ensure that the kick-start pulse is present at pin 11. A fault in the line output stage derived 12V supply could be the cause of the condition just described, i.e. no results with line drive pulses present for a brief period at switch on. So D6542, C2542, R3060 and C2060 should be checked. The line oscillator will run with the set switched off and an external 12V supply connected to the TDA8305 chip (pin 7 positive, pin 6 negative), and in this condition line drive pulses will be seen at pin 26. It will also run and provide line drive pulses when the set is switched on, h.t. is present and an external 12V supply is connected to the chip. This is a helpful test to check whether the cause of the fault is in the LOPT-derived 12V supply. It can also help in determining where the cause of the fault lies when the oscillator, driver and output stages are suspect. of the TDA3653B field output chip 1C7500 but check for dry -joints at the scan coil plug. Set dead, no h.t. supply: Check zener diodes D6638/39/40 and thyristor Thy6641 in the overvoltage protection circuit circuit. D6638/39 are usually 36V types and D6640 30V but check in the relevant service manual. Thy6641 is type SF2D41. Line tearing, especially with bright scenes: Replace C2542 (220pF) and C2060 (680µF). Set intermittently fails to come on: Replace C2058 (22µF, 100V) in the kick-start circuit associated with the TDA8305 chip. Set dead or power supply tripping: Replace R3614 (6.8k0) in the power supply (primary side). Set goes off after a couple of hours, with h.t. present: Replace D6523 (1N4148), Tr7251 and Tr7523 (both usually type BC337) and change C2523 from 6.8pF to 68µF, 63V. Any of these components can cause the fault. Faults List H.T. variations and the volume intermittently increasing to maximum: Replace C2631 (22nF) at the base of the standby switching transistor Tr7631. Set dead, h.t. low and the 9V rail at 5V: The line output transformer is faulty. Blank raster and no sound after four hours or longer: Faulty TDA8305 chip. H.T. goes high: R3627 (33kf) has gone high in value. Failure to lock to a signal when sweep tuning: A.F.C. coil L5045 faulty. Poor line sync: C2051 (10pF, 25V) associated with pin 24 of the TDA8305 chip is faulty. Set dead, h.t. correct: Several possibilities here. C2519 (150pF) at pin 26 of the TDA8305 chip or the 12V zener diode D6030 in the kick-start circuit associated with pin 11 could be faulty. If necessary check the 1N4148 diode D6523 in the line driver stage's start-up supply. Intermittent destruction of the line output transistor: Replace Tr7521 and Tr7523. They are both usually type BC337, but check in the relevant service manual. Intermittent sound buzz: 6MHz filter CF1036 is faulty. Low 5V supply to the micro chip: Diode D6644 (1N4148) in the power supply is leaky. Intermittent loss of the picture: C2045 (22nF) in the a.g.c. circuit, connected to pin 10 of the TDA8305 chip, is faulty. Intermittent dead set or intermittently shuts down with the h.t. line at 8V: Zener diode D6613 (15V) in the power supply is faulty. Field collapse (blank screen): Usually caused by failure Poor field and line sync from cold: Change R3052 from lks2 to 1.8k52 and C2053 from 22nF to 150nF. Sound intermittently increases or starts popping, especially with bright scenes: Change C2030 from 47pF to 22pF, 16V and fit a 6.2V zener diode in position 6031 or in place of link 9511. Philips' Service Tips To improve reliability D6613 was changed to type BZV85-C15, part no. 4822 130 33732. The following production changes were introduced to prevent the set coming on in the store lock mode when switched on from standby. EEPROM IC7785 changed to type ST24CO2CP, with a shield, part no. 4822 310 31886. L5786 in the 5V supply connected between pin 8 of IC7785 and 83797 instead of R3770/3767, using a spare print pad adjacent to R3793. Position the shield over the i.c. and solder in place of link 9020. For improved reliability C2523 was changed to 68µF, 63V, part no. 4822 124 40754. Make this change whenever the line output transistor (Tr7528) has to be replaced. A rope or barber's -pole effect on the picture can be cured by carrying out this modification. If the set won't tune to high -frequency channels and lower -frequency channels appear to be higher up the tuning band Tr7705 (part no. 4822 130 41594) could be defective, causing incorrect tuning voltages at pin 11 of the tuner. In the event of the failure of R3616, R3680, Tr7610 or D6610 in the power supply, all four components should be replaced. Do not, when fault-finding, connect any probe to Tr7610's gate - this will destroy it. For colour drop -out with prerecorded tapes change C2322 from 220nF to 1pF, part no. 4822 124 40242. The following modifications will provide a considerable improvement in avoiding avoid adverse effects caused by copy -protected tapes: change C2050 to 47nF (part no. 4822 121 42491), R3050 to 751(11 (part no. 4822 116 52301), R3051 to 1.5k0 (part no. 4822 116 52243) and C2322 to 1pF (part no. 4822 124 40242). To improve safety in the event of a short across the 9V supply R3100 was changed to 1.50 (safety type, part no. 476 TELEVISION MAY 1994

4822 116 80691) and the following components were added: R3646 15012 part no. 4822 116 52211, C2110 470nF part no. 4822 121 51252, Tr7100 BC558 part no. 4822 130 40941. The extra components are fitted directly to the 9V rail, wired as an over -current protection circuit to monitor the 9V supply. If excess current is detecttd thyristor Thy6641 is fired and the power supply shuts down. This is not intended as a service modification. The following modification was introduced to improve the operation of the line drive circuit: R3059 changed to 11(12 (part no. 4822 116 52204), R3520 to 330 (part no. 4822 116 52191), R3521 to 4.7k12 (part no. 4822 116 52283), R3525 and R3527 to 1512 (part no. 4822 116 82098). D6521 BYD33D (part no. 4822 130 42488) and Test Case 377 This month's saga started when Mr. Smith came into the workshop to collect his newly -repaired Grundig radio receiver. Pam, who runs our office, had been watching a chat show whilst taking a rare break. As she made out his receipt, Mr. Smith's attention turned to the TV set. "You don't seem to get the widescreen programmes here" he commented. Pam wondered what widescreen programmes he was on about. Mr. Smith, it subsequently transpired, was under the impression that the broadcasters had all gone over to the new widescreen format. But what was happening was that his set displayed letterbox -style pictures because it was faulty. Would he care to bring it along? Next day he appeared with a Sony KV2092, which is fitted with the XE4 chassis. Now the KV2092 is something of an exception to the general rule that Sony's chassis are very reliable, safe and perform well. There has been trouble with the on -off switch, and with the connections to certain resistors. Modifications were made in other parts of the chassis, and in Television Ted's circuit diagram many components are highlighted in yellow - to remind him of previous diagnostic battles fought and won against Secret Agent XE4. Despite all this the cause of Mr. Smith's widescreen effect was not one that any of us had come across before. The symptom indicated lack of field scan amplitude of course: there were black bands at the top and bottom of the screen. What was significant - in retrospect! - was that the workshop test pattern also showed up a barrel -distortion effect at the sides: the edges of the picture bowed out, as if someone had advanced the setting of the EW pincushion -correction potentiometer too far. If some brainy technician had at this point sat down and actually thought about these symptoms he might well have come up with the answer straight away. How about you? Certainly the members of the workshop staff who were present that day failed to produce any such instant diagnosis. Sherlock (whose nickname we're thinking of changing - suggestions on a postcard, please) merely adjusted the height control to obtain an almost full picture and the pincushion amplitude (EW parabola amplitude) control for a reasonably linear display - provided it wasn't examined too critically while a test pattern was being shown. And there the set sat for a day or two, with only a little hit of picture height jitter to betray the fact that the symptoms had been disguised rather than the fault repaired. No doubt the easy-going Mr. Smith would have been quite happy to take the set back in this condition. But wiser workshop counsels prevailed. Counsels are one thing, a concrete diagnosis quite another. When Sherlock returned to the set he restored the two presets to their original positions and began to bang the set's B panel, where the timebase circuits live, with the handle of a screwdriver. As this had no effect he got out his hairdryer and raised several square inches of the board to the point where you could have used it to fry an egg. He then had a go with freezer: after a few seconds the field output chip was at the centre of an icy waste, glistening under the bench light like Antarctica under a December sun. The lack of height remained. We'll spare you a lengthy account of all the various components that were changed, save to say that some of them had more than two legs and that C2521 lonf (part no. 4822 122 33307) added. Again this is not intended as a service modification. Finally a service manual correction. In both the circuit diagram and the PCB layout the 160V supply winding on the line output transformer is shown incorrectly. The winding is between pins and 6 (h.t. feed point), not 1 and 5. Acknowledgement I would like to thank all the engineers at the Philips Competence Centre in Heywood for their help in compiling this information, especially Brian, Tony and of course the Frank Bevins. they included the height control and its 240k12, 1% series resistor. Neither will we tire you with details of the meter and scope checks that were carried out. There was however one key point in the field scan circuit where, had Sherlock ventured, he would have found more rather than less of the waveform amplitude he was so short of! Don't turn straight to page 509 for the solution to this one... Amstrad SRD400 Satellite Receiver A lot of ex -rental Amstrad SRD400 satellite receivers are around at present. When installing them we often find that where there's a long cable length between the dish and the receiver the vertical/horizontal polarisation switching doesn't work. This is because of the voltage drop along the cable, the most obvious outcome being reception of only half the channels, each one occupying the space of two channels. The cause of this is the fairly marginal 18V feed to the LNB - is often measures 17.5V at the SRD400's F connector with no load. To cure, add a standard silicon diode, 1N4001 or whatever, in series with DP504. To avoid having to remove the board, cut the earthy end of DP504, leaving the maximum lead length at the diode. Then solder the new diode from here to the earth lead of CP507, an 01.024F ceramic capacitor that's conveniently near. The anode of the new diode goes to DP504, its cathode to CP507. Hugh Allison TELEVISION MAY 1994 477

Camcorner Reports from Keith T Keeton and David C. Woodnott Sony V50 We've had two faults recently with this one, as follows: (1) No E -E colour, no date/time, superimpose intermittent. The cause of the fault was on board RZ1P which was not providing a 5V supply for board DS24P. Transistor Q118 was faulty. (2) The E -E display had pink colouring at the top left-hand corner. Prior to the appearance of the fault the lens had been replaced. Because its earth lead had been laid near the CCD's output pin the signal was being distorted. The cure was to move the earth lead away from the output pin. K.T.K. Sony CCDF555 This camcorder produced a grainy E -E image. Checks on board VC96P showed that the EVR didn't change the voltage at pin 5 of IC301 (type M62352GP, part no. 875963527). Replacing IC301 cured the fault. K.T.K. Sony ACV30 (1) This unit produced no output and the LEDs weren't lit. A voltage check at pin 4 of board CT produced a reading of 13.5V. R104 had gone high in value, a replacement curing the fault. (2) The output was o.k. but no LEDs were lit. There was zero voltage at pin 3 of IC251 which was faulty. Board CH had to be replaced as IC251 is not available separately. (3) This one failed to charge. The power light was out and the d.c. output was low. We found that the d.c. output socket was faulty. The cabinet top had to be replaced as the socket is not available separately. (4) The power light was on but the unit failed to charge, its d.c. output being low. PS201 on board MA had gone high -resistance. Replacing PS201 restored normal operation. K.T.K. Akai PVC40E This palmcorder produced camera pictures but little else: no mechanical functions operated. The cause of this was damage to part of the mechanism that positions the pinch - roller assembly. We replaced cam T and lever cam T and retimed the mechanism. Then, using the Sony mode box, we found that the original cause of the damage was still present. If the audio/control head stack is set slightly too high the `assembly stopper - TG' will mess up the loading/unloading sequence. The cure was to set things up as per the manufacturer's instructions. D.C.W. incorrect. Dry -joints around IC3 were suspected, but none could be found. During their path from source to further processing stages the signals pass through intermediate PCB layers: once again, application of hot-air rework methods in the IC3 area cured the problem. D.C.W. Philips 22AV5150 Adaptor This adaptor failed to charge: the 2A, 115 C thermal fuse TF2 had failed and switch SW2 was faulty. D.C.W. JVC GRS505E The rather unusual symptom with this S -VHS model was that the viewfinder picture became blurred, with a noticeable lack of width, after a period of use. Monitor pictures remained normal however, with no noticeable degradation. The fault condition would be followed by shut -down to power off. A 9.6V battery powers this model. When we tried the camcorder out with a variable power supply we found that the voltage could be reduced to about 8V, at which point shut -down occurred. We also noticed that there was no battery -low indication on either the rear LCD operation display or the viewfinder when the fault occurred. The cause of all this turned out to be something quite simple. Pin 5 of the mechacon microcontroller chip IC301 is used to monitor the battery voltage, the feed being from a potential divider network across the supply. R325, a 68kn chip resistor in this network, was open -circuit - neither damaged nor dry -jointed. D.C.W. Philips VKR6847 This camcorder is based on the Panasonic NVG 1. The fault we had was no record or playback sound, though E -E was o.k. R4001 turned out to be open -circuit. D.C.W. Sony CCDF355 Playback was o.k. but there was no camera picture nor were graphics available. The cause was that the trigger/standby PCB RCO4 was broken. We often find that this assembly has been damaged because of excessive pressure on the trigger button. D.C.W. Sanyo VMD9OP The E -E and playback colour were o.k. but there was no record colour. We found that L1361, a low-pass filter in the record chroma path via Q1361 to the head amplifier chip, was open -circuit. A replacement fixed it good and proper! This little machine is around with other brand badges on it. D.C.W. JVC GR323E This camcorder produced very poor camera pictures. Playback etc. was fine. The picture was dark and pulled to the right-hand side of the display, with colour smearing. We found that the picture signals leaving the SSG PCB were JVC GR323E Problems with the dew sensor seem to be the flavour of the month with this and similar models at present. If a replacement sensor fails to provide a cure, check the plug/socket connection to the main PCB. D.C.W. 478 TELEVISION MAY 1994

The Panasonic Alpha 3 Chassis Part 3 Ray Meadows In this instalment we'll deal with the microcomputer chip that's the heart of the control system and the video processing circuitry. This is all on panel E. We'll also take a look at the RGB output stages which, as usual, are mounted on the c.r.t. base panel (the Y PCB). The Microcontroller Chip The microcomputer chip used, in position IC1213, is a Matsushita type MN1871611. Its processor section is a 6502. All Alpha 3 models use it, though the TX37A2G has a version with a different mask, suffix -TKM. This 64 -pin customised chip contains 16K of RAM and has seven control ports, an infra -red remote -control input, RGB on -screen display outputs, four seven -bit D -A outputs Local keys Option set-up Panel M Clock Panel E 1k 2 1k Data Reset IC1211 Input M6M8 0021 EEROM Output CS 5V 1k EE ROM chip select pins 9 and 48 operate only with satellite -equipped receivers. The purpose of some other pins deserves a word of explanation. Links and capacitors connected to pins 2, 3 and 4 set up the receiver's audio modes: Zweitone, Nicam and dual Zwietone/Nicam models use different combinations. With UK receivers the scart slow switch function is disabled by connecting pin 6 to the positive supply via a resistor. Pins 8, 51 and 52 select the received broadcast mode: pin 8 switches between PAL and Secam while pins 51 and 52 provide transmission standard selection, either PAL I, PAL B/G or Secam L/L'. Some sets also have manual colour and system buttons on their control panels. NTSC and modified-ntsc signals are decoded by the PAL circuitry and are handled by all sets including UK models. Pins 29 and 30 are used only with sets for the French market, pin 29 selecting positive video while pin 30 switches the sound if. to select the low audio carrier with Secam L' transmissions. These functions are enabled by a diode matrix attached to IC1101 on panel M, i.e. on whether or not certain diodes are present - see Fig. 2 and Table 2. This determines a set's `identity', i.e. whether a set will work with French or German signals, with satellite signals etc. IC1101 also manages the local key commands. Identity information and local key commands are sent from IC1101 to the microcontroller chip (IC1213, pins 28, 57 and 58) via the S bus. As we've seen, an EEROM is also connected to this bus. As some of the channel and preset information varies from country to country, differently programmed EEROMs are fitted at the factory - they usually have coloured lines or dots to indicate the program type. Some features that the hardware makes possible are not implemented in UK models. As an example, the colour transient improvement circuitry is included in the picture signal improvement chip but the CTI option is turned off by the diode matrix: removal of a single diode will bring the CTI feature into operation should you want to try this. Most extra features will however require additional hardware to be added. IR input 02841 1C1101 MN83 03 IC1051 IR receiver 28 I 58 00 53 IC1213 Dola MN1871611 410-1. 59 tuner and S 12C external bus bus....60 circuits Microcontroller -Mak 5V r Reset 1 1C1212 Fig. 1: Block diagram of the control system. MN12 8OR and eight six -bit D -A outputs. Pin connections are listed in Table 1. Peripheral components include a dual output crystal module that's connected to pins 62 and 63, a reset timer chip (IC1212) that's connected to pin 54 and an EEROM (IC1211) for factory and customer preset control information. This chip is linked to the microcontroller chip via the S bus. The input from the IR infra -red remote control system, at pin 1, comes from an amplifier chip (IC1051) on board M. Fig. 1 shows the system in block diagram form. Series inductors are included in most of IC1213's input and output control lines to provide protection. Depending on the options incorporated in the particular model some of 1C1213's pins may or may not be connected to external circuitry. Even when externally connected some functions operate only with certain models: for example The Self -test Mode Another feature of the microcontroller chip is the self - test mode. To bring it into operation, press the set's 5VO MN8303IC1101 220 -/SAN-04 24 6 -.8 7-09 -010 _4,11 D1101 25.,vv114... 23 22 21 20 19 18 All 1k 01105 01105 Sat standby oft/on 01104-09 D1110 01118 01111 1 01119 01107 01123 - r 02851-0- -0- D1112 D1120-0-0 011011 01116 I D1124 Fig. 2: Local key/options matrix. -00, D1121-0-*,114. e_l_0-0-0 D1122-0-0 0111 -Ore TELEVISION MAY 1994 479

volume down button and the remote control unit's off - timer button simultaneously. This produces five results via the on -screen display. In normal circumstances they should all read `ok'. The first three results are followed by numbers. The test checks relate to the tuner, DBS (the satellite tuner), the picture signal improvement (PSI) chip, the teletext decoder and the EEROM. The numbers vary with tuner type, the satellite pack and how the PSI chip is set up (CTI functional or not). Note that the DBS test merely checks the path for the DBS system in the micro - controller chip: as this path is present in all micro chips the reading obtained should be `ok' whether the set is satellite equipped or not. To exit the self -test mode, press any local or remote control unit key. The user analogue controls are then reset to their factory conditions, i.e. contrast at 80 per cent, colour and brightness at 50 per cent, bass and treble flat etc. During production a special set up is programmed into the EEROM to pretune the programme positions to the factory's internal signals and set all the analogue remote - control functions (volume, colour etc.) to the high-speed mode so that they can be adjusted rapidly. This once -only set up is cleared by entering the normal self -test mode, which is done before the set leaves the factory. Video Processing Fig. 3 shows a block diagram of the video processing system. The circuit is made more complicated by the numerous AV and S -video modes and, in Continental sets, the Secam facility. The video signal arrives at panel E from the AV switch described last month. It's first spilt into separate luminance and chrominance components by the luminance delay line/filter DL301 and the chroma bandpass filter LC601. Both filters have control pins that enable them to be switched for operation with different standards, the control signal being provided by the multistandard colour decoder chip IC601. For example the luminance delay line's trap frequency is set to 3.58MHz when the decoder senses an NTSC signal. Secam-equipped sets have an additional path for the Secam chroma signal. The outputs from LC601 and DL301 are passed via buffer stages to the colour decoder chip IC601 and the black -level expander (BLE) chip IC301 respectively. When an S -video signal is being processed however the luminance delay line is not required. In this mode the micro - controller chip produces an output at pin 5 to forward bias Video from AV switch 480 LC601 BPF DL301 Delay line Control lines Chroma Diode matrix Luminance IC601 TDA4650 Multistandard c lour decoder IC603 TC4053B Manual system switching R -Y B -Y System ident outputs f From microcontroller chip IC301 CX20125 Black -level expander IC602 TDA4660 Digital line B -Y, R -Y R -Y Brs C302 TDA4670 Picture - signal imp over Cont. IC303 TDA4680 Video control R G B External inputs Fig. 3: Video processing block diagram. To CRT panel ET@ CompositeIt video or S video luminance S chroma 111.. 12V 0-VVS/L01DL 301 2 --- 3 D300 Control signals from multistandara decoder NTSC M-NTSC PAL SECAM 0 D612V LC601 03 D606 SECAM models only 0303 12V DH309 0603 12V D 609 I-1 II S video mode control 0 ON Chroma to IC601 Luminance to IC301 0304 Fig. 4: The chroma, luminance and S -video input signal paths in the video processing section of the receiver. diode D304 and reverse bias diode D309 (see Fig. 4). The luminance is thus forced to take the alternative route via R300, bypassing the delay line. The Black -level Expander The Sony CX20125 black -level expander chip is more commonly found in Sony sets. The idea is to 'stretch' the luminance information in dark areas of the picture artifically, enhancing its visibility. It does this by comparing the average signal black level with a sample produced during the blanking interval. The result is used to adjust the luminance gain nonlinearly. It's really a form of variable gamma correction that works best with a grey picture but not with a picture that contains peak white and black (a test pattern for example). While the circuit is useful in many cases it can be confused when, for example, white subtitles appear on a dark picture. This can result in an undesirable 'pumping' of the average picture brightness. The value of R306 controls the BLE effect: the lower its value, the greater the effect. The value was changed during the production life of the chassis. IC301's output is buffered and then passed to the PSI chip IC302. The Multistandard Colour Decoder While black -level expansion is taking place in the luminance channel the chroma signal is being processed by the Philips TDA4650 (version 3) multistandard colour decoder TELEVISION MAY 1994 10281

Table 1: Microcomputer chip pin connections Pin Function Pin Function Pin Function 1 Remote control input 23 Tint DAC output 44 Red OSD output 2 Nicam mode M1/2 select 24 Contrast DAC output 45 Volume DAC output 3 Nicam/f.m. select 25 Brightness DAC output 46 Mute 1 output 4 Stereo/mono 26 Sharpness DAC output 47 RGB switching control 5 Text/S-video switch 27 Chassis 48 Satellite select 6 Scart slow -switch enable 28 RC receiver bus control 49 AV2 control input 7 Search stop input 29 -/+ video select 50 AV1 control input 8 Colour system select 30 VHF low select 51 System 2 output 9 Polariser skew DAC output 31 Picture noise reduction 52 System 1 output 10 AFC input on/off 53 EEROM select output 11 50/60Hz switch 32 Standby/on output 54 Reset input 12 Chassis 33 V defeat (n/c) 55 Field sync input 13 No connection 34 Nicam/f.m. select 56 High-speed switch 14 Bass DAC output 35 Zwietone select 57 S bus data (SBD) 15 Treble DAC output 36 No connection 58 S bus clock (SBT) 16 Balance DAC output 37 +5V supply 59 I2C bus data (SDA) 17 Horiz. centre adjust (text) 38-5V supply 60 I2C bus clock (SCL) 18 Music/speech output 39 Line sync input 61 +5V supply 19 No connection 40 Mute 2 output 62 Clock oscillator 1 20 Ambience control output 41 Blanking output 63 Clock oscillator 2 21 Colour DAC output 42 Blue OSD output 64 Chassis 22 +5V supply 43 Green OSD output chip IC601. This device can process PAL and NTSC signals and, with the addition of a bell filter circuit and extra bandpass filtering in parallel with the main chroma bandpass filter, Secam signals. System selection is automatic, the chip checking all new signals for 80msec in each mode to establish their type. When the chip has reached its decision, system sense output signals appear at pins 25, 26, 27 and 28 for M-NTSC, NTSC, Secam and PAL respectivel}.. These outputs control the bandpass filtering and the luminance delay line. A CMOS switch, IC603, is also connected to these lines to provide manual system selection via the microcontroller chip's colour system, SYS1 and SYS2 outputs, by forcing the selected system pin high. Despite the advanced features provided by this chip there are few peripheral components. Most pins are connected to capacitors to set the options or for clamping. Pins 19 and 21 are connected to the 7.16MHz and 8.86MHz crystals for the NTSC and PAL/Secam reference oscillators. IC601's outputs consist of R -Y and B -Y colour -difference signals which are passed to a digital electronic delay line. The Digital Delay Line The TDA4660 delay line chip uses digital, switched capacitors to adjust the relative delay between the R -Y and B -Y signals, cancelling out phase errors. The signals are clocked through the chip by a 3MHz clock signal that's synchronised with the line -frequency component of the sandcastle pulses. After passing through the delay elements the colour -difference signals are fed via an internal 1MHz bandpass filter to the next, PSI chip. The Picture Signal Improvement Chip The TDA4670 picture signal improvement chip IC302 contains noise coring, colour transient improvement, aperture correction and picture sharpness control. When a colour -difference signal that will benefit from PSI is detected, i.e. one with a clearly -defined transient, a sample is differentiated, rectified and used to open a switch that isolates the output from the input. This signal isolation maintains the last transmitted value for the duration of the transient, after which the input is reconnected to the output. The result is the well-known CTI effect, i.e. sharpened colour transients. The luminance signal is fed to a switchable delay line arranged as thirteen 9Onsec cells. This selective delay enables the total luminance delay to be equalised with that of the colour -difference signals following the CTI circuit, thus helping to eliminate Y -C fringeing. After this, aperture correction is applied to the luminance signal: delayed, peaked 2.6MHz and 5MHz signals are added to the luminance signal to sharpen it (the 'aperture' is reduced). The Diode D1101 D1105 D1106 D1107 D1108 D1109 D1110 D1111 D1112 D1116 D1118 D1119 D1120 D1121 D1122 D1123 D1124 Table 2: Diode matrix options Function Sat standby off (out)/on (in) Text (out)/no text (in) 'Loudness off (out)/on (in) AV1 RGB auto (outl/not auto (in) SIF single lout)/multi (in) France (in)/other models (out) 4 -step sharpness (out)/64-step (in) CTI on (out)/off (in) OSD English (outl/symbols (in) 2 AV inputs lout1/3 AV inputs (in) Fine tune on (out)/off (in) No sat pack (out)/sat pack (in) UHF tuner loutinhf-uhf tuner (in) Ecom (outl/philips (in) tuner Secam L off (out)/on (in) PAL/NTSC (out)/pal/ntsc/secam (in) PAL/NTSC loutl/pal/ntsc/secam (in) TELEVISION MAY 1994 481

noise -coring system then filters random noise from 'flat' parts of the signal where no h.f. information is present. This works well, since noise is most noticeable in areas of the picture that don't change. A peaking circuit finally adjusts the mid- to high -frequency gain, giving the frequency response a boost. These functions can all be controlled via the I2C bus. Note that the PNR (Picture Noise Reduction) button on the remote control unit activates the noise -coring circuit only when the picture sharpness is set above the mid position. As a result the effect may not always be obvious, especially when a set has been despatched with the sharpness control set below the mid position. Video Control The luminance and colour -difference signals finally pass to the TDA3505 (later TDA4680) video control chip IC303, where they are matrixed to produce the RGB tube drive signals. Switching between the off -air picture and the text, OSD generator and AV1 inputs is carried out by this chip, also adjustment of the brightness, contrast and colour levels (under the control of the microcomputer chip). Presets for factory contrast and brightness adjustment are provided: they can be readjusted in accordance with the instructions given in the service manual. The RGB drive signals for the output stages on panel Y emerge at pins 1, 3 and 5 respectively. A feedback input is provided to enable the chip to carry out automatic grey - scale correction over the life of the tube. Flashover protection at the output pins is provided by zener diodes that are normally connected to chassis via the service switch. When the switch is opened, the RGB outputs rise and the base of transistor Q402 is earthed, blocking the field feedback and thus stopping the field scan. The resultant horizontal white line can be used to adjust the 'low -light' white balance. RGB Output Stages Fig. 5 shows the type of RGB output circuit employed. Cascode circuits are used, the lower transistor (Q365/6/7) in each channel having in its emitter circuit a cut-off control to set the biasing. In addition a drive adjustment preset is included in the R and G channels. Between them these controls enable correct cut-off and white balance to be achieved. The output stages are powered by a 210V supply derived from the line output stage. White balance adjustment is straightforward. Operation of the service switch kills the field scan and the RGB signals. The first anode (screen) control on the line output transformer is then turned to minimum to extinguish the horizontal white line across the screen. Connect a high - impedance voltmeter to the tube's blue cathode and adjust the blue cut-off control for a reading of approximately 180V. Advance the setting of the first anode control until a white line is just visible. Cancel any coloured tint present by using the red and green cut-off controls. With the display restored to normal, adjust the high -lights (if necessary) using a Minolta or similar light meter. Switch -off Spot Supression Q354/5 provide switch -off spot suppression. The operation of this circuit makes use of the fact that at switch off the 16V supply decays faster than the 210V supply. In normal operation C361 is charged by the 16V supply, which is also applied to the base of Q354 via zener diode D375 and R380. Thus neither Q354 nor Q355 is conductive. At 310V 16V D357 R360 56k 0351 Green drive from IC303 27 47p, Fig. 5: The green output stage and switch -off spot suppression circuits on the c.r.t. base panel. switch off the 16V supply decays rapidly, leaving Q354's emitter at a higher voltage than its base. Both Q354 and Q355 conduct, removing the bias from the bases of the upper transistors in the RGB output stages. Because of the high beam currents used with invar-mask c.r.t.s, it's important that the spot suppression works correctly. Otherwise spot burn can very easily occur. Next Month In Part 4 we'll look at the audio, scan and remaining circuitry. BACK COPIES We have available a limited stock of the following back issues of Television: 1992 February, April, May, July, August, September, October, November and December 1993 January, February, April, May, June, July, August, September, October and November 1994 January, February, March and April Copies are available at 2 75 each including postage. Send orders to: Reed Business Publishing, Television Back Issues, Room L323, Quadrant House, The Quadrant, Sutton, Surrey SM2 5AS. Make cheques/postal orders payable to Reed Business Publishing Ltd. 482 TELEVISION MAY 1994

Soldering and Desoldering Surface -mounted Components Part 2 Steve Beeching, T.Eng. An advantage of the Pace system described last month is that you can start with a budget power unit and one hand - piece and add to this as the need arises. I was lent a top -of - the -range MBT250 power unit (see Fig. 1) with a selection of handpieces so that I could try each one out and get a feel for its operation. On Test The first thing I set out to do was to remove some surface -mounted quad flatpack chips - the ones with legs on all four sides. There was a limitation to what I could do as I didn't have every type of tip available - it was not possible to tell Pace in advance which types of chip happened to be on the scrap boards I used for test purposes. The first i.c. I tried was the main system control chip on an old Hitachi VM200 camcorder PCB. It measures 22.9 x 16.8mm and has 64 legs. The tool selected for this job was the thermopik TP65, which has a suction pad, with the correct tip. I chose this tool because it would not be possible, in view of its size, to lift the i.c. by the surface tension of the solder alone. The tip temperature was set to 300 C, with a 35 C offset to compensate for the effect of ^ 0 F CH 1 0 i CH 2 0 013 0 1O 375 El 01 lip o A V MOMM El SEIECT 5E7 CFF9ET boe Fig. 1: Front panel, Pace MBT250 power unit. the large tip. To aid the solder reflow I coated the legs with flux and tinned the quad tip with solder. My first attempt to lift the chip was a failure, as not all the legs had been reflowed. This however illustrated the safe design of the suction pad: it was not strong enough to tear the i.c. off the PCB, letting go so that there was no print damage. My second attempt was successful and, fired with enthusiasm, I searched for another board and had a go at the same i.c., again successfully. I then used the SX70 solder extractor tool to clean the print and the legs of the chips, then neatly refitted them. Because of possible damage as a result of heat or static charges chip refitting is not recommended, but as these were not working panels I decided to try it out. To do so I first cleaned the board with 'Micro Care' circuit cleaner supplied by Pace. A dispenser with a stiff brush attached is used to squirt the cleaner on to the PCB. The board is then vigorously scrubbed. After wiping off the excess fluid with a paper kitchen towel I brushed some flux on to the print. The i.c. was then placed on the PCB and, to maintain alignment, its corners were secured with small dabs of solder. The legs were coated with flux and solder was applied from the tip of the IR70 soldering iron: a tip of about 2mm was used, providing a solder reservoir sufficient for soldering five or six legs at a time. It was very difficult to blob two legs together but, by way of experimentation you understand, I managed to do so. I used the extractor to remove excess solder from the legs and finally tidied up the joints with the soldering iron. Resoldering without blobbing adjacent legs together was achieved because of the relatively low working temperature: the solder didn't short across to an adjacent leg as just enough flowed into the connection. The final result was perfect - as if the chip had never been removed! I next used the SX70 solder extractor to remove some large motor -drive chips with thick legs. Although the tip wasn't quite the right one there were no problems. I was able to place the tip over the leg so that it went inside. Once the solder melted it started to flow into the tip even before I started the vacuum pump. A good test of low -temperature working is removal of a plastic connector from a PCB. Using the SX70 solder extractor operating at 300 C I managed this with remarkable ease and efficiency - there was not a single burn mark on the connector. The convenience of having three handpieces in operation together, so that the extractor or soldering iron can be selected immediately, cannot be overstressed. My next test was to remove a chip from a difficult position. I selected a camera panel with a 44 -pin flatpack chip in a confined space. It was in a screening can with just 10mm spacing on two sides and surface -mounted components close to the other sides. In this situation simple hot-air equipment is difficult to use as adjacent components are likely to be dislodged. This time I used the IR70 soldering iron with a 12 x 12mm tip. Again the chip's pins were coated with flux and the tip was tinned with solder. After reflowing its legs the chup, with a twist and a lift, came off in the tip. After cleaning the print and its legs I refitted the chip, using the 2mm soldering iron tip as a reservoir for resoldering the legs. Only two legs blobbed together, where one was a corner leg on a large print land: as heat conduction via the print occurred, the solder bridged. I was able to resolve the problem by using the solder extractor and iron to clean and resolder the leg. As mentioned above, it's very helpful to have both handpieces operational at the same time. The TT65 thermotweezers make removal of surface - mounted components easy. I fitted two flat surface -mount tips with a width of 2mm at the blade tips. All that was necessary to remove resistors and capacitors was to grip, heat, twist and lift - almost all in one go! Use of a single iron to remove large surface -mounted electrolytic capacitors has always been a problem because the relatively large PCB pads and component tabs cool quickly. The tweezers again made this easy: grip, wait to heat then twist and lift. The tip temperature with offset was about 300 C, so there TELEVISION MAY 1994 483

was no print damage or lifting. The same tips can be used to remove three -terminal devices. With a transistor the base and emitter can be bridged with one tip while the other is used for the collector. While playing about I whipped transistors off a surface - mounting board as if I was just picking them up. Some of the time I didn't use exactly the right tip for the job. This illustrates the flexibility of the Pace tools in that the tips are able to cope with a wide range of tasks. As a Grundig service centre I often encounter leadless quad chips. They are normally fitted in holders but you sometimes find them soldered directly to the PCB. These i.c.s are difficult to remove and even more difficult to replace as the legs fold back on themselves beneath the chip. One way to remove such a chip is to cut each leg with fine cutters. Another is to use the TT65 thermotweezers with triangular tips. Chip removal is the same with all types. Flux the legs, tin the tips and approach the device from opposite corners: clamp with the heated tweezers and lift. Component Replacement The technique to use when fitting replacement components is a matter of personal preference. I prefer to flux the legs and print, then apply the solder from a soldering iron tip used as a reservoir. If the finish is not too good the hotair stream from the thermojet TJ65 can be used to make it look neater. My son is much happier applying solder paste from a syringe then using the thermojet hot-air pencil to reflow it. Where there are a lot of surface -mounted components close to an i.c. the use of hot air may not be such a good idea: some of them may go walkabouts! A problem that can occur when using a temperature - controlled soldering iron at such low temperatures is rapid cooling of the tip. I've encountered this before: the soldered joint conducts heat away from the tip and then takes a long time to reflow, if it does at all. The construction of the Pace handpieces along with the SensaTemp system prevent this happening. When heat is conducted away from the tip on its application to the joint, considerable power is applied to the heater to compensate. This is done very quickly, maintaining work continuity, and may not be noticed. It is this ability to maintain a constant low tip working temperature, with an offset to adjust for the larger tip sizes, that makes working at 300 C possible. Test Summary For general bench use the MBT201 power unit with the IR70 iron and a range of tips to suit your needs, an SX70 solder extractor plus some tips and a TJ65 thermojet hot-air pencil is a good choice. The TT65 thermotweezers or TP65 thermopick and a range of tips could be added where a lot of work on surface -mounting boards is done: in this case however the MBT250 power unit would be more suitable. As I already have a Weller hot-air pencil I opted for the MBT201 with an 1870 iron, SX70 solder extractor and the TT65 tweezers. While the SX70 comes with a set of tips and cleaning brushes the tweezers had no tips at all! So having spent about 1,000 on the kit I had to spend another 150 on tips. Who said you can repair a camcorder for ten quid?!! Quad Flatpack Chips We've so far discussed surface -mounted component removal using the least expensive method, cutters, and the more expensive method with specialised tools and tips. There are two problems when shaped tips are used to remove a quad flatpack (QFP) chip: contact and accessibility. To remove the i.c. without print damage you have to ensure that the solder on all the pins has reflowed before the physical act of removing the chip is tried. With a large chip that has a considerable number of legs there is a greater chance of damage. And the more legs, such as with a 100 - pin QFP chip, the smaller and more delicate the PCB pads will be. With regard to access, once the tool has been placed around the chip it's not possible to see whether all the connections have reflowed: 99 may have done so but one may not. If the tool is then twisted the print will suffer. The danger is reduced, but not eliminated, when the Pace thermopick or another tip with a small suction pad is used. Unlike the chips used in computers, those used in brown goods products may be stuck to the PCB. This makes it difficult to judge whether a chip has not been fully reflowed or is just stuck. The method outlined so far requires flux to be applied to the chip's legs and a generous layer of solder tinning on the tip. If the tip or the tinning is irregular, one or more legs may be not fully contacted and therefore not reflowed, and this cannot be seen. Some solder equipment suppliers recommend that with the larger types of QFP chips this reflow problem is overcome by first soldering all the legs together. Then, when a quad tip is applied to the four solder strips, reflow at all the legs is guaranteed. It's questionable however whether the thermal inertia of this relatively large amount of solder is good for the print pads, bearing in mind the extra heat required to remove the excess solder. I have to admit to losing a print pad or two when using shaped tips. So the chance to review the Leister Hot Jet hot-air system was welcome. Leister Hot Jet System I am wary of blowing hot air on to high -density surface - mounting PCBs as it's always possible for adjacent small components to go astray. So it was a challenge to be converted to this system. The Welwyn Tool Co. Ltd. supplies the Leister Hot Jet Rework Station in a wooden case that has a preformed base with compartments to hold the various tools supplied with it. At the rear there's a metal holder for up to eight nozzles. At the front there's a compact PCB holder that consists of a horizontal bar and two clamps. The Hot Jet hot-air blower, for the removal and replacement of surface -mounted components, is on the right-hand side. At first sight it looks large and heavy, but first impressions are not always right: it's in fact deceptively light in use. The blower generator, on the left-hand side, contains the heater, motor and controls. These consist of a small on/off switch, a temperature controller and an air -flow regulator. The mains cable is connected to this unit and the air intake is here. The Hot Jet blower has a working end that's about 20mm in diameter and 60mm long, with an output grill. On to this can be fitted the largest range of nozzles every devised. There are far too many to list. I stopped counting at ninety, but the manufacturers say that there are some 400 in all. Each nozzle (tip) is shaped to suit a particular type of device. For a QFP chip the nozzle has four side vents that match the size of the i.c. During use I found that there's a degree of flexibility here: i.c.s that are a couple of millimetres larger or smaller than a particular nozzle can be successfully removed with it. The nozzles are made of high-grade stainless steel and are very tough. Unless you run over one with a steam roller or subject it to similar abuse a nozzle will probably last for life. This means that they are not cheap: a 16.7 x 16.7mm 484 TELEVISION MAY 1994

nozzle costs about 104. A nozzle hire service could possibly be set up by manufacturers to suit the range of chips they use. Use In use there is no direct contact with the chip being removed. The method is simple. Hold the tool above the chip with one hand, hold a pair of tweezers in your other hand, watch the solder reflow, then lift the chip off the PCB. The temperature calibration is not intended to be accurate. You soon learn that a reading of 3/4 on the temperature knob is about right for the average video/audio/camcorder QFP. Air -flow control is excellent - smooth down to the lowest setting. At the other end the air flow is very high: it's unlikely that you will ever need this unless you want to clear a PCB of components in a red-hot, howling gale. In tests I found that a fairly light air flow enabled me to remove a QFP chip that was surrounded by a large number of high -density passive components without any of them going walkabouts. As with all SMD tools there is need for practice and learning takes time. A nozzle with a small pipe for use as a hot-air pencil is supplied with the work station. It can be used to remove and replace passive components. The hot-air pencil nozzle can also be used, with the solder paste and syringes that are supplied with the workstation, to replace QFP and DIL chips. If the chip is heat -sensitive however it would be better to use the method previously described, i.e. apply flux to the legs then apply solder via a soldering iron as a reservoir. Again it's a matter of what suits you best and the equipment available. 1 have to say that the Leister Hot Jet works well as a hot-air pencil. The Leister Hot Jet system from Welwyn Tools is excellent value for money. The complete work station is less than 500, the blower on its own 243, both plus VAT. Most QFP nozzles cost about 104. This rises to 121 for the type that will deal with chips whose legs curl beneath them. In Conclusion With just a couple of nozzles the Leister Hot Jet work station will suit as a starter kit for SMD work. It is fair to say that the Pace and Leister equipment complement one another very well. A professional service department that does regular SMD work would do well to consider having them both. Addresses For details of Leister equipment apply to the Welwyn Tool Co. Ltd., 4 South Mindells, Welwyn Garden City, Herts AL7 1EH. Telephone 0707 331 111, fax 0707 372 175. For details of Pace equipment apply to Pace Europe Ltd., Sherbourne House, Sherbourne Drive, Tillbrook, Milton Keynes. Telephone 0908 277 666, fax 0908 277 777. Weller tools are manufactured by Cooper Tools Ltd., Sedling Road, Wear 6, Tyne and Wear NE38 9BZ. Telephone 0914 166 326, fax 0914 179 421. The Denon SC7000 desoldering tool was described in a previous test report in this magazine, see the August 1993 issue, page 718. It's available, along with Weller equipment and general soldering tools, from Farnell Electronic Components, Canal Road, Leeds LS12 2TU. Telephone 0532 636 311, fax 0532 633 411. Next Month in TELEVISION SERVICING THE HITACHI C2118R/T These colour sets were launched in 1990. Picture quality is excellent aid reliability reasonably good. Like even the most reiable of sets however there are some common problems. Fortunately they are fairly straightforward and can be fixed economically. Mike Leach provides the necessary know-how. 100Hz FIELD RATE DISPLAYS Flicker has always been a drawback with 50Hz interlaced displays. Use of a field -store memory enables the rate to be increased to 100Hz, but there is more to it than just that as Eugene Trundle explains in the concluding instalment of his Modern TV Receiver Techniques series. The field store can also be used for digital noise reduction and to implement special effects such as picture zoom and PIP. NV QUALIFICATIONS Dramatic changes are about to take place in Brown Goods industry training and qualifications, with the move to NVQs (National Vocational Qualifications). There is good and bad in the changes as so far proposed and much remains to be settled, but they will affect us all. Joe Cieszynski sums up the present situation. SERVICING THE HANTAREX MTC9000 Now here's something different - an RGB monitor that's widely used in games arcades. Repairing this type of equipment could provide an additonal source of revenue for the TV service engineer. Peter Hubbard explains what's required. TOSHIBA SERVICE BRIEFS More know-how from Toshiba - held over from the May issue because of space problems but definitely to appear next month. THE PANASONIC ALPHA 3 CHASSIS There are still some novel aspects of this complex chassis to be covered, including the CCD comb filter system used in some models. To (Name of Newsagent) ORDER FORM Please reserve/deliver the June issue of TELEVISION ( 2.20), on sale May 18th, and continue every month until further notice. Name Address TELEVISION MAY 1994 485

CD Player Repairs My dealer friend John asked me to fix a Pioneer PDZ82M. That same day my elder son arrived with an identical player that belonged to his pal. Probably the spindle motors, I thought: should be a couple of easy repairs. Now those of you with an interest in CD players will know that Pioneer machines and faulty spindle motors seem to go together. At another manufacturer's one -day course I attended recently the technical expert was all too keen to tell us that Pioneer has problems with spindle motors. He did admit, though only in a whisper, that his firm also had problems with spindle motors. So it's not only Pioneer then. What exactly is the problem with those Pioneer motors? The Pioneer Spindle Motor Problem The problem is with spindle motor part no. PYY1109. As a replacement, Pioneer now supply motor part no. PEA1233. To the best of my knowledge, it's not possible to distinguish between the two. Models that had the PYY1109 fitted when new include the PDM410/510/610/710, the PDT303, PDX950M, PDZ62M/62T/82M/83M/ 560T and XDZ53T/63T. There may be others. As the motor deteriorates, it loses its ability to accelerate to the required maximum speed - about 400 r.p.m. for the innermost part of the track. This is of course where the table of contents (TOC) is to be found. So when you receive the player the ticket will probably say 'dead' or 'will not play'. The first step to take is to enter the test mode. Do this by pressing the 'test' button then switching the player on. Some models don't have this button: instead you'll fmd a pair of links marked 'test'. Shorting them together with a screwdriver has the same effect. Once in the test mode press fast forward. This moves the sled towards the outer edge of the disc. Release the button when the sled is at the centre disc position. Next press PGM or, if the player doesn't have this, press the forward track jump button. This will load the no. 1 disc, the laser will light and the focus search will begin, hopefully ending up with a locked focus 486 Les Austin servo. Press play and the disc will rotate at about 300 r.p.m. - assuming that the motor still has some life in it. When the disc has reached this speed, press pause. This will lock the tracking and spin servos and should produce some nice music. So is there really anything wrong with the motor? Since we didn't start at the inner part of the track, it follows that the TOC won't have been read. Also, one of the advantages of the test mode, the disc motor has to spin at only 300 r.p.m., which it managed, instead of 400 r.p.m. How do we confirm that the motor is faulty? The following procedure is recommended by Pioneer. Disconnect the motor leads and connect them to an Avometer switched to its low -ohms range. The motor should rotate and you should get a reading of more than 2052. Carefully stall the motor with a finger. Note the new reading, which should not be less than 100. Continue releasing and stalling the motor until you're sure that the reading never falls below 100. If one or more of these conditions isn't met, the motor is faulty. This test method has never let me down. It's not uncommon to get meter readings of only a few ohms: sometimes when you allow the motor to rotate you may get a dead short reading. A PEA1233 replacement motor will almost certainly provide a cure. Sometimes you fmd that a player which arrives with a 'dead' ticket will not load a disc or won't unload one that's inside. When you've dismantled the player you may find that circuit protectors ICP30 and ICP3 I are open - circuit. This is usually because the motor has a spot with a dead short. The circuit protectors are not fitted in all units. It's important, when the disc motor has been replaced, to set the turntable height. This is usually for a clearance of 0.9mm beneath the turntable, but all mechanisms have a moulded -in setting tool. The exact method is clearly explained in leaflet PGB/141 which Pioneer sends out with replacement motors. If you are not the sort of ageing engineer who possesses an Avometer you can use the following variation of the above procedure. Connect a 20Q resistor in series with a 1.5V cell (D or R6) and your newfangled digital meter switched to its d.c. range (current). A short-circuit motor will take 75mA: 10, 20 and 500 readings correspond with 48, 36 and 20mA respectively. Back to the Faulty Players So what about my two faulty Pioneer players? The first one had a faulty spindle motor and was easily repaired. Not so the second one. This one didn't read the TOC but was all right in the test mode. A quick Avo check showed that there was nothing wrong with the disc motor. Back to the test mode and get the machine playing again. This time I left it to run for a while. Until, that is, I realised that about every forty seconds it jumped back and repeated the music. The sled rail wasn't very clean - it was obviously a heavy smoker's machine, as the colour and smell indicated. So I cleaned the rail with swabs and isopropyl alcohol and tried again. Still the same, and time to check the sled motor. Using the same procedure as for a spindle motor, I initially obtained 500 readings. Patient checking revealed an open -circuit spot however. This is the first time I've had a sled motor problem with a Pioneer machine. A replacement, part no. PXM1002, was obtained and I decided to replace the spindle motor at the same time as a precaution - I don't like bouncers. About twenty years ago I had a problem with a Pioneer motor: new big -end rollers, piston, rings and gudgeon pin cured that one, a Model 600A chainsaw, but I don't suppose that you want to hear about that sort of Pioneer! A Couple of Aiwas When I took his Aiwa back John handed me an Aiwa Model DX740 midi unit with a faulty CD section. "The disc spins slowly. I think it's a faulty motor" he said. Next I called in on Stan. He presented me with an Aiwa Model CX800E midi, also with a faulty CD unit. "The disc doesn't spin. I think it needs a new motor" said Stan. It seems that things are coming in pairs at the moment. I didn't have a manual for either of these machines, but thought that I'd be able to do something. The DX740, actually a DXM740 player, being part of a CX740K system, contained the Sanyo chip set, with an LA9201 r.f. chip and LC7863 processor. The nearest circuit I could find was for a Samsung RCD2500 which has an LA9200 r.f. chip. With this model if you locate pin 22 of the TELEVISION MAY 1994

LA9200 chip and follow through a 10142 resistor you come to the r.f. test point. I connected the scope to the same point in the Aiwa machine and found a nearby chassis point. After setting the scope to 50mV/div and 500nsec/div with a 10:1 probe, I inserted a disc and pressed play. As John had said, the disc rotated slowly. The scope displayed a low -amplitude, incoherent mess. There was no way that the processor was going to make any sense of that. A laser power meter check produced a reading of some 0.1mW, about right, but I was not convinced that the Sony KSS150 laser unit was o.k. I have a good second-hand spare that I use for testing. When I fitted this there was a clean r.f. signal, the TOC was read and I could listen to nice music. Do you recall my previous comments about the Sony laser units? The KSS210 replacement that arrived cost 24 and was marked 'made in Singapore'. This unit produced an r.f. signal with an amplitude of about 3V peak -to -peak. I reduced this to 1.6V p -p with preset SFR156, which I had correctly guessed was the laser power adjustment. I cannot find a definitive figure, but think this is about right for the Sanyo chip set. By cribbing further from the Samsung manual I was able to complete the adjustments as follows. E -F balance: Connect the scope to TP1-3 (signal) and TP1- I (chassis), set to 50mV/div and 2msec/div with d.c. coupled 10:1 probe. Use SFR151 to centralise about the d.c. zero axis the waveform obtained during a track jump. Focus bias: Reset the scope's sensitivity to 10mV/div, move the probe to TP2-1 (signal) and use SFR155 to set this to +200mV. Whenever I work on a player I've not come across before and for which I have no manual, such as this one, I create a single -sheet manual which I place in a loose-leaf file for future use. In this case the player is fed from the mother unit via a 10 -wire umbilical cable. I located the power supply and found that the transformer has 10-0- 10V a.c. outputs to pins 1, 2 and 3 of the cable. Often I receive a CD player without the mother unit. Having this sort of information on file can save the hassle of getting the rest of the equipment brought along. The fact that this is a symmetrical supply is worth noting: it suggests that the earth reference for the r.f., focus and tracking adjustments will be at true earth level. The Samsung RCD2500 whose manual I'd been cribbing from does not have a symmetrical supply, so the reference for adjustments is not zero. Moreover the reference for the r.f. adjustment is different from that for focus and tracking. If you don't have the manual and don't appreciate this you'll never be able to align such a player. Next to the Aiwa CX800E. This time there was a Sony chip set, also another KSS150 laser unit. The r.f. chip is the CXA1081S, which is quite commonly encountered. My crib this time was the manual for a Goodmans player (model not known but obviously, as with some other Goodmans machines, a Samsung unit with a different label). When I asked it to play the unit tried a focus search but failed to lock. I connected the scope to pin 2 of the CXA1081S chip, using a convenient adjacent chassis point and the settings described for the previous machine, and tried again. There was absolutely nothing to be seen. Time to try my spare laser unit again. Bingo, another successful diagnosis. Order a second KSS210 and set it up as follows. First check that the r.f. output is 1.2-1.5V p -p - this shouldn't need adjustment. Next use SFR102 to set the focus bias to +200mV at pin 19 of the chip, in the stop mode. The same test point is used if you need to adjust the focus gain. This is usually for +100mV, using SFR104, during play: the waveform should just loose its 'sharpness' (h.f.) and should have a little slow d.c. wobble visible. E -F balance is checked at pin 20 of the chip, using SFR101 for adjustment. Use the same test point and SFR103 if the tracking gain needs to be adjusted. Both John and Stan were hoping for motor replacements. Instead they got laser replacements. A Kenwood Discman A little Kenwood discman, Model DPC55, awaited my attention. The ticket said "doesn't work - repair only if not more than 25". My first reaction was to send it straight back to its owner, but a combination of curiosity and not too many outstanding jobs led me to insert a disc and ask it to play. The result was a funny whirring noise accompanied by failure to read the TOC. I held the machine in my hand, removed the disc and saw the optical unit move quickly to the outer edge. When I moved it so that I could see it better the sled moved back to the inner edge. I realised that gravity was involved here somehow - tilting the machine set the sled off on its unrequested traverse. When I dismantled the player I saw that a plastic arm was fixed to the Toshiba manufactured laser unit: this was shaped so that as the traverse worm shaft turned the laser would move across to the required position. But the threads in the plastic had worn away. Kenwood supplied a replacement, part no. 21W8184, for the princely sum of 39p. When I fitted it the player worked perfectly. This time the customer got his way - at just 25 (plus VAT of course). The Soap Bit And now for the soap, episode one. I think I was about twelve. I was playing about with the electric kettle plug. It was a Wylex type which, some of you might remember, had a circular central earth pin and two rectangular - section outer pins for the supply. I'd connected it piggyback on to the 15A Wylex plug for the boiler. When I unplugged it I forgot to switch off and, since for some reason the plug's cover had been removed, I received my first real' 'grand -daddy' of a shock. You might expect someone so young to be put off electricity for life - I very nearly was, permanently. But like everyone else in this trade I must be just too stupid: I suppose, without realising it, I was getting my first addict's fix. 11 continued to get shocks from the loudspeaker grille of our Raymond radio receiver, without knowing the cause. And I played with batteries, bulbs, electric motors and suchlike, never having a clue about what was actually going on. I think I was thirteen when I built the mandatory crystal set: the first sound I heard was Eartha Kitt singing 'I love Paris' - I can almost hear it now. Next came a one -valve (3S4) radio receiver. It was, I seem to recall, a kit that another lad in my class never touched. This was followed by a three -valve kit. It had been bought by my unbelievably rich brother (he was a boy entrant into the RAF, and certainly seemed rich at the time) who had sent for it then left it alone. So I got it working. A school pal and I then each bought an ex -WD no. 38 transceiver. His worked properly but mine would only receive - and not very well at that. It had cost me all my hard-earned wages as a paperboy. My inadequate skills at servicing were now evident: I never did fix it. I might have done but I started work, and next came the first of a succession of love affairs. I bought my first motorcycle, and dirty oil -stained hands took over from electric shocks. TELEVISION MAY 1994 487

Modern TV Receiver Techniques Part 17: Control and Communication Eugene Trundle For many years TV sets managed perfectly well without any form of Intelligent' internal control. The knobs on the front turned them on and off and regulated what we've now come to call the analogue functions, such as volume, brightness and contrast: originally the actual signal or bias voltage was taken to the controlling potentiometer. Even when cordless remote control began to be used, all that was required at the receiving end was a simple command -decoder chip that could close say eight channel selector switches plus an on - off or standby switch and provide three-four voltage control lines for the analogue functions just mentioned. Ports are required to enable data to enter and leave the CPU. Operating instructions have to be provided: these are stored in a read-only memory (ROM) within the chip. The ROM, programmed by the chipmaker, tells the microcomputer what to do, in what order, how to respond to the data and 102741 Start Read data from NVM. Set analogue levels, channel and programme Enter the Micro With the advent of such features as voltage- and frequency -synthesis tuning systems, described last month, and advanced forms of teletext it became essential to provide TV sets with the sort of control system that VCRs had to have from the start. Working with a set of built-in instructions, a microcomputer chip can control and co-ordinate all the TV set's functions in accordance with viewer commands and feedback it receives from within the set. Use of such a chip in conjunction with a memory store enables a comprehensive and flexible control system to be devised, tailored to the set's price, type and features specification. De ode Tu ing or anal gue? Scan keyboard for user command Input? No Remote No command? IYes Check and decode Analogue Or tuning? Loop A Maintain settings, scan a.t.c. etc. Microcomputer Basics All digital computers operate in the same way, whether they are used in a pocket calculator, a missile tracking system or a TV set. The work is carried out by the central processor unit (CPU), alternatively known as an arithmetic and logic unit (ALU), which consists of gates, inverters, adders and some registers to store the results of calculations. r - L Core Instruction register and decoder 8 -bit t imer/event counter Internal bus Crysta [0273 CPU Interrupt, control and timing S7 1 _J Remote control input Remote control decoder 3 -bit AFC comparator I!Me rupt Re et input AFC 8 x 4K program store ROM Decoder \ 13- bit DAC Tuning voltage 128 x 8 -bit data RAM 16 x 8 -bit registers Decoder 5 x 6 -bit DAC I P WM con rot outputs I Character output S nc in ut On -screen display gen. I 2C bus interface Fig. 1: Internal arrangement of a typical TV microcomputer chip: some of the custom blocks are optional. 488 SDA SCL Set channel Set required level Set channel Set required level Fig. 2: Basic software program for TV system control. commands it receives and how to control the system, in this case a TV set, of which it forms a part. A certain amount of random-access memory (RAM) is incorporated - this is the basic difference between a microcomputer/microcontroller chip and a microprocessor - giving the device increased flexibility and in fact making it self-contained as a computing system (though additional external memory, and extra expansion port chips to increase the number of connections to the system, may be required). The internal RAM enables instructions and in-bound/out-bound data to be stored temporarily. Microcontroller chips for use in TV sets and VCRs go further than this, incorporating such things as serial -data interfaces, DA converters, instruction decoders and key -scan generators. On -screen display generators are often included nowadays. Fig. 1 shows a typical TV microcomputer chip in simplified block diagram form. The internal data is in 8 -bit byte form and is shunted around via a main highway that's referred to as a bus. A master oscillator has to be provided to time the control logic. This is called a clock and is controlled by an external crystal. The ROM's program is fixed during manufacture of the chip. One of the masks used during the fabrication of the i.c. does this, giving the chip its particular characteristics - each version of the i.c., distinguished by a suffix number, is made using a different mask at one or more stages during its manufacture. In sets that employ frequency -synthesis tuning, part of the ROM is used TELEVISION MAY 1994

as a look -up table for the standard CCIR carrier frequencies. A typical microcomputer chip for TV receiver use contains 4Kbyte of ROM and 128 bytes of RAM: generally eight or sixteen of the 8 -bit registers in the RAM are used for internal working purposes, leaving the rest free for the temporary storage of data. The ROM program configures the input/output ports as required by the setmaker and governs the operation of the internal system. The Reset When the microcomputer chip is first powered the data in its RAM and the conditions at its input/output port latches and instruction decoder will all be randomly arranged. Thus something has to be done to prevent the behaviour of the set being unpredictable. This is the purpose of the externally - generated reset pulse, which is applied after the chip's correct supply voltage has been established. The pulse lasts for several cycles of the CPU's operation and sets the program counter to zero to initialise the operation of the chip and thus the whole of the TV set. Flowchart Fig. 2 shows a generalised software flowchart for a TV microcontroller chip, providing an idea of its mode of operation. At switch on the power supply is brought out of standby and the contents of an external EEPROM (electrically erasable and programmable read-only memory) are read, its data with respect to preferred analogue settings and the last programme number being passed to the relevant signal processing chips around the set. The memory has to be erasable and programmable so that preset control settings, channel selection etc. can be changed as required. Nowadays the memory is a non-volatile retains its data when the power has been switched off: with some earlier memory devices a back-up battery had to he provided. After this initial procedure the microcomputer chip operates as a control loop, with a main routine (loop A) and several subroutines that are triggered when user instructions arrive. With sets in which a text decoder is controlled by the main microcomputer chip there are further subroutines for text acquisition and channel change to provide initial page entry etc. In sophisticated sets like these and those that incorporate software setting up (service) data, up to 8Kbytes of ROM are provided, Application -specific Blocks A TV microcontroller chip incorporates, as Fig. 1 shows, application -specific blocks to configure the input/output ports for specific purposes. Six DACs (digital -to -analogue converters) are shown in Fig. 1: they take the form of pulse - width modulation (PWM) generators whose duty cycle (the relative output pulse on/off times) is set by a binary number that's derived from the EEPROM or a user command. Five of them have 64 possible output levels, corresponding with their 6 -bit data inputs. Externally, the PWM outputs are passed to RC integrators that produce the d.c. control voltages required by the sound and video processing chips to set the volume, brightness etc. level. The user keys, local or remote, increment or decrement an internal counter, which takes about eight seconds to go from zero to the maximum count. During this period the chip can if required generate an on -screen display, in bar or dot form, along with a caption. The on -screen display generator shown in Fig. 1 is synchronised to the normal line and field scan rates by the Key matrix 02751 Key -scan generator PO P1 P2 P3 0-1 "I "I YI Fig. 3: Basic key -scan arrangement. 1.6 -Clock pulses P4 P5 6 P7 Mlcrocontroller chip Key decoder set's sync pulses. The fifth PWM DAC typically operates with a 13 -bit data input to provide 8,192 possible output levels for varicap tuning as described last month. A very common assignment for one input/output port is the provision of key scanning. This is done to reduce the number of chip connections required for use with an onboard keypad. The arrangement is shown in Fig. 3. An internal key -scan generator produces sequential output pulse LED strobe Key strobe Microcontroller LED drive/key scan I I I Data Key board LED array Mode switches Fig. 4: Key -scan combined with LED drive and strobe. The keys are scanned at aboutlomsec intervals. 1D2761 trains at connections PO to P3. When a key is pressed, one of the pulse trains is returned via connections P4 -P7 where it's fed to a decoder. This identifies the command, which is referred to the instruction register then processed and carried out. Further economy in pin use can be achieved by arranging for the key -scan port connections to have a dual use. They can be used to drive a multiplexed LED display as well, as shown in Fig. 4. Other microcomputer input/output connections are arranged as 1 -bit input or output status and control lines. Typical inputs are a.f.c high/low, TV signal identification TELEVISION MAY 1994 489

and scart pin 8 status for AV switching. Typical outputs drive LEDs, provide audio and/or video muting and control signal routing, TV standard switching and standby operation. If the on -screen display is multicoloured, three output pins are required for R, G and B signals (plus a blanking output pin). Alternatively the OSD generator may, as described in Part 15 (March), be in the teletext decoder chip, under the control of the microcomputer, or a separate character -generator chip may be used. Another input/output arrangement shown in Fig. 1 is the SDA tine SCL tine SCL out_ SCL in t resistors Data out, Data in Device 1 ia.supply SCL SCL - Data Data Device 2 Fig. 5: Open -drain I2C bus configuration. In the rest state all the chips present a very high impedance to the data and clock lines. p277i 12C bus interface. The I2C system can be regarded as the ultimate port -expansion arrangement. It enables a two -track serial data bus to control scores of external chips and hundreds of functions. But before we go on to describe this, let's round up our description of basic TV microcontrollers. Microcontroller chips are generally powered by a 5V supply that needs to be held within ±0.5V for reliable operation. They are generally fabricated in CMOS or NMOS form, which makes them vulnerable to damage by static charges built up during handling, transportation or use. Reliability is good however, though when a replacement is required it's vital to ensure that the new chip contains the correct (or updated) software, identified by the suffix to the basic type number. So long as the full type number or part number is quoted, replacements should be available from the setmaker or an authorised distributor. Correct operation of a microcontroller chip depends on three vital factors: that the supply voltage is present and within the specified limits, that a reset pulse is provided at switch -on and that the clock oscillator is up and running. The 12C Bus Unlike the lines in a true computer system the control lines in a TV set are quiet for most of the time. Thus an eight -track parallel bus system would be hard to justify. It would add greatly to the number of control and peripheral pins required by each chip connected to the system. The board area required for the connections and chips and the wire/plug/socket count would all increase, as would the cost, complexity and risk of failure. The I2C bus provides an appropriate solution. It's a simple two -track system, along which data is sent in serial form. One 12C line is called SDA (serial data). The other one, which carries clock pulses for synchronisation, is called SCL (serial clock). When the bus is not carrying information both lines are held in the logic one condition by means of pull-up resistors connected to the positive supply line. All the devices linked to the I2C bus must have open -drain or open -collector connections so that the wired -and function can be used, which simply means that turning on any one (or more than one) device can pull down the line. Fig. 5 shows the basic arrangement. Addressing The I2C bus is bi-directional and allows more than one device to be used as the master. The master device starts the data transmission on the bus and generates the clock signals for transmission along it. It addresses another chip which, until the end of the transaction, remains the slave - even though it and the master may be the transmitter and receiver in turns. Thus all the chips that use the bus for communication must have individual addresses: the address for the SAA5241 computer -controlled teletext chip for example is 00100010. The last bit is the read/write command, zero for write (feed data into) and one for read (extract data from). Thus for data fed to the SAA5241 chip the address is 00100010 while for read out the address is 00100011. Naturally the microcontroller chip has its own I2C read and write addresses. Storage chips have programmable addresses: the first four bits of the byte are fixed by the hardware while the next three are pin programmable at the chip, the final bit being the read/write indicator. All the data on the 12C bus is in 8 -bit serial form, partitioned off by stop and start bytes. The addressing procedure is such that the first 8 -bit byte of data sent along the data line determines which slave chip has been selected by the one acting as the master. The most significant seven bits of the byte convey the slave address, the least significant bit indicating whether data reading or writing is required. If two chips try to use the bus as masters simultaneously an arbitration process takes place. This gives priority to the master addressing the slave with the lowest address: when the transaction has been completed, the second master device is allowed to use the bus. SDA SCL s Start condition Stop condition 1-- - -7 Fig. 6: How 12C messages are started and terminated by the master device. L ID278j For each clock pulse on the SCL line there's a corresponding pulse on the SDA line. When the SCL line is at logic one, the level on the SDA line must be stable: thus SDA data can change only when the SCL line is at zero. If the SDA level changes when SCL is high, a start or stop condition is indicated. This is illustrated in Fig. 6. Thus the beginning of a message is indicated by the master device (whichever chip this may be, usually in practice the microcomputer chip) pulling down the SDA line while the SCL line is high. At this point all chips connected to the bus are alerted in readiness for the first byte, the address word that indicates which device is being called up. All the chips compare the first seven bits with their own addresses. Unless coincidence is found, they go back to sleep. The selected slave chip comes to life and at the eighth bit switches to read or write. On the ninth bit it signals its presence and readiness to the master chip by pulling the SDA line low during a one period on the SCL line. If this 490 TELEVISION MAY 1994

acknowledgement signal is not received by the master it knows that the message is either not being received or that there is no slave at the address used. In either case the master device generates a stop condition (see Fig. 6 again) to terminate the message. Thereafter the bus is free for other business. The Data Format Fig. 7 shows the I2C bus data format. Everything is done in 8 -bit bytes: at the end of every byte the master gets an acknowledgement from the slave as just outlined. A message starts with the slave address and the read/write bit, followed by data. The first data byte may well consist of a register address within the slave chip, after which the actual Start Acknowledgement (stave to master) S A A A P Slave address Data Data top overwriting the information previously held there. In this case the request, shown in Fig. 8(c), is for maximum brightness which corresponds with 00111111. It's loaded during the eight clock pulses of the word and acknowledged on the ninth. Stop (end of message) is indicated by the master chip releasing the SDA line which goes high during the next SCL line high. The new information in the brightness control data register raises the d.c. voltage fed to the luminance clamp within the slave chip and up goes the brightness level. 12C Network Almost any number of devices can be connected to an I2C bus, the main limiting factor being that the bus capacitance per track must not exceed 400pF. The maximum data rate is 100kbits/sec - slower devices and transmission rates can be used. While any chip connected to the bus can take the role of master and address any other chip, most TV chips act as slaves, passing data to the microcomputer only when asked. Some devices are by their nature passive, without any need to send data elsewhere, for example character -generator and video -processing chips. Others have constant two-way communication with the microcomputer Fig. 7: 12C data format. When a read command occurs data flows from the slave to the master device. *Multistandard PLL synthesiser Colour decoder Video processor Picture enhancement data that carries the information comes. There is no limit to the number of bytes that can be used for a message. At the end of the transaction, business is terminated by the master generating a stop condition. Fig. 8 shows how this works in practice. Should the viewer want to increase the picture brightness by remote control, the microcomputer chip detects the request then sets up the start condition and puts on the data line the address of the video -processing chip, say 10001010, Fig. 8(a), the last bit indicating the write (data in) condition. This is acknowledged by the slave chip, inviting further data. It comes in the form of sub -address 00100010, see Fig. 8(b), which is the location of the register for brightness data. Acknowledgement comes during the next clock pulse after the 8 -bit word. Finally the data for the brightness level requested by the user is loaded into the selected register, Start Address Write Ack Microcontroller SCL Non-volatlle memory Teletext Coq, Stereo/dual sound decoder Ht -ti audio processor Fig. 9: An 12C bus network. Chips can be omitted or added, and updated, as required. The arrangement shown here would form part of a current high - specification TV set. On -screen display generator chip, e.g. the tuning system, while the EEPROM, though never taking over the role of master device, talks to the microcomputer at switch -on and when a channel change takes place and is addressed during set-up and memorisation. In some sets the EEPROM data is regularly sent to appropriate slave registers during normal operation. A typical I2C network in a modem TV set is shown in Fig. 9. SDA SCL SDA SCL 1 0 0 (a) Sub -address 0 0 0 0 0 0 1 0 Ack I2C Developments The I2C system, which was devised by Philips Components, has been very successful and is popular with setmakers both within and beyond Europe. The latest generations of I2C chips have an increased data rate capability of 400kbits/sec and an address word upgrade, which is compatible with earlier designs, to ten bits. This enables up to 512 bi-directional or 1,024 passive chips to be connected to the same bus system. SDA SCL 0 0 Level data Ib) Ack Slop Remote Control A remote control system has to use serial data because the link between the transmitter and the receiver is via a beam of infra -red (IR) radiation that's switched on and off. (c) Fig. 8: A typical 12C bus transaction: (a) start and address data; (b) sub -address for the brightness register; Ac) brightness level data. Handset Circuit A typical IR remote -control transmitter employs a circuit like that shown in Fig. 10. The chip is a low -voltage device, TELEVISION MAY 1994 491

13 15 Instruction encoder Modulator fr 2 16 17 18 19 20 Key decoder Timing and clock pulse generator Start up Ou put buffer 23 3V Key- scan enerat or 0 s c Format logic Key matrix 9 10 11 12 2 Cr1 455kHz 11-1111-6 TAT 22 21 /7777 Code set 101, 201 from keyboard 102821 Fig. 10: Typical remote -control handset circuit. All modern RC transmitters operate on the same principle. powered by a 3V battery. In the quiescent state it consumes less than 10p A. When a key is pressed one of pins 13-20 goes low and the oscillator, based on the 455kHz ceramic resonator connected to pins 2 and 3, starts up. As a result, scanning pulses appear at pins 5-12. Depending on which key has been pressed, one of pins 13-20 receives a key -scan pulse which is decoded and then passed to the instruction encoder to produce the appropriate code to apply to the modulator. The 455kHz clock frequency is divided by twelve in the timing section to produce a 38kHz carrier for the modulator. The circuit connected to pins 4, 21 and 22 of the i.c. sets the transmission code: it's programmable by means of hardware (wire links, diodes or a slide switch) connected to pins 4 and 21, setting the code for the type of receiver with which it is to be used, while the 10+ and 20+ channel selection keys operate via pin 22 to set the sixth bit of the function -code byte to one (more on this below). The chip's output, at pin 23, drives Trl and Tr2 on and off, pulsing the GaAs IR-emitting LED D 1. The peak current is over 1A, and up to four such LEDs may be used in a single handset. Such a current cannot easily be provided by the small batteries used, but the large reservoir capacitor C3 helps out. As the pulse duty cycle is short however the average current demand when the handset is operated is only 14-20mA. The IR Link The wavelength of the IR carrier is about 940nm. Typically the -6dB beamwidth of the LED is 60. The control range is about 12m on the beam's axis, some 8m at 45 off - beam. Precautions must be taken at the receiving end against the many forms of interference present: incandescent and fluorescent lamps, sunlight and heat sources all produce outputs in the 940nm band. The first line of defence is a low-pass optical filter that's placed in front of the photodetector diode. As Fig. 11 shows, the photodiode current is modulated by the IR radiation, the wanted signal being selected by a sharply -tuned LC filter that's resonant at 38kHz. An IR preamplifier chip is mounted close to the photodiode: the tuned amplifier can provide a gain of over 100dB and has a wide -range a.g.c. loop. The slicer/limiter in the chip produces a clean, squarewave output for the microcomputer chip. The remote -control pulse train is generally fed to the latter's interrupt input pin. The appearance of the first (start) pulse diverts the microcomputer chip from whatever it's doing and routes the following data to the remote -command decoder's input register. IR Command Codes There are many ways in which.the IR data can be arranged to provide coded commands. Generally, pulse - position modulation is used. Each pulse consists of a burst of the 38kHz carrier, with a spacing of say 7.6msec representing one and Smsec zero. The first byte in the data stream is a custom code that identifies the make, group and type of equipment being addressed. The next byte conveys the Optical filter IR input Microcontroller chip Fig. 11: Typical remote -control receiver arrangement. control data. These two bytes are repeated continually, at intervals of about 100msec, while the key is held down. Typical codes may include a.g.c. and corruption check systems. With Philips. RCS codes a digital one is represented by a rise in potential during a one -bit period while zero is represented by a similar fall. Transmissions begin with two start bits to set the operating point of the a.g.c. circuit in the IR receiver. These are followed by a control/toggle bit that indicates the start of a new transmission. Next come a 5 -bit address and a 6 -bit command. A coding system used by Toshiba and Panasonic amongst others commences with a start pulse which is followed by custom and data codes in normal and inverted form: this provides a simple corruption check by inverting all the bits in each byte and comparing 492 TELEVISION MAY 1994

Plimm. 2sAm, 00150 ggl V:, sgar9 74;55 4.0161 0 50 2SA893 0 50 2513100 0 18 S1K3042 4 20 ADI62 050 2011011 1 35 20167 0 15 ST10304222 4 75 SPECIAL 80108 0.07 2061102 1 60 250525 0 60 STK419125 18 50 BC141 0 30 2061123 0 49 200600..._..045 ST85325 445 13C142 0.20 2511175 0 40 20612..._0.80 0795332 180 80307.0.08 2561282...080 250636_0.10 0185422.4.20 BC337.0.07 2041307 I.50 200716..0.95 ST854764.00 80546_0.30 2583"...DID 22E56 0.305 R77344810 34.03 STARTS 80131 190 BD132..0.30 208541 221)856 0 55 STA401 3 50 80243...038 293546...0.55 2501136...0.50 118811 3.80 80246..0.65 258618...305 2501273..070 218441.2.50 EICK33..0.50 2586410.I1 25012750.58 5111441.4.75 80054..0.50 29649...0.38 2021278. 80197..0.20 258717...052 2501398...140 S1#41090.590 87259...070 256861_._1.50 2501426..,.2.05 S1959041640 OFFERS 16/4/94 ENDS 15/5/94..0.58 0115412_4.40 Aluminium aerial plugs 10 p/c at 1.35 874940.16 81681...0.30 2581015 2581016 060 10 25D11413.50 A11.318..._..1.40 747157 1472702000.120 Ferguson TX10 remote control 7.50 each 1 BRE...0.80 250372..._...0.70 AN54111..3.50 747280.2.25 fift90200 200158..068 AN5512135 167601235 Philips IC TM P 4-7C 432AP 8189 11.50 each 8U124 1.35 230681...3.20 985521...1.35 168205 290 80180 _.1.90 250741...300 166367...3.90 188207 165 BU206...085 23C867_...3.00 486673...2.25 148210 377 TEA 2018A 3 p/c only at 3.75 80208...068 2S0941_...0.12 387115_..._.1.40 188214 3: BU208.1...0.70 200998..3.05 84318..1.75 188215 803264 I.10 2001008._...020 81658...360 070574 80407 065 2501103...0.50 861330...1.50 1701020 80409 1.10 2501123...045 845466..2.50 6701032 046 BU426 5 TDA 3654 3 p/c only at 6.50 IS 2SC12220 II 8662190200 tipc1230 BY 1508AF 3 p/c only at 1E3.00 BOOM 0 2501327 0 78 101156 I UP013610 BU5088..1.35 2001382 0.30 841377 _1.40 UPC:378 Bata 1.05 gbc14,24t B, 5840 ',Ng; - it 110T035954,- - STR 50103A 3 p/c only at 8.50 85626 111.150811 1.45.1.20 2001514 2001569...-0.42 -CU KA2243-161352... _. 100.165 2.4v Philips memory battery 2 p/c on!y at 4.10 8550803...1.35 2501674 _ars 141460--- 2.05 :74 _Ail B111121... 0 85 RT475... rsc1852... 111 049 IMIL::::.!!! 04440..., I 18,"`" "4 7806 Hitachi VT11/17 original idler 2 p/c at 4.00 &MM.- 1 10 2501914..._ 0 15 184460. 1 30 7812,13,1,1,1350t" - - - 015 220-111_, Bo r (41204 44 11113 IA... 0 26 2502027 _... 2 20 1.8318 1 15 117328 _... 3 3C 2002076 I 10 114723 9 45 30 717416.._.. 0 0502236 0 25 011818 2.25 912450 TIP47.._. 0.45 2302278 1 00 066402 TIP110 0 45 2%2342 0 18 M51433 VFW:Fill 11P112 0.85 2002500 025 1102262 1.75 15458 10P1420 90 2502579 1.25 M51172.. 2.60 61 IS.. 1111.791...1.30 2502603 _0.11 9584844.50 81151/800... 0.85 1172955050 2502668..C10 290 TIC10611 040.025 245......,.. 229. 2502979 801327 _... 050 6 80E340 MIE521.0.35 262222020 2502838-11133732 M133756 2502688...0.30 263035 I 10 2SC3182 I 2 DiOINS M40001 003 263773 _154 266130040 2303262 2003345 36'0y"'850 100 SA112931 50 485 94007 0.03 251350..._.0.60 ISC35D6 5111293 2 0.10 201606285 2003883 3.40 2.80 5611293.3 5.15 515 195408 87127 0.10 206679...195 2504242 140 5115010 495 80133 0.10 2017220.62 250198...1.60 5115243171 7.15 MR854 0.10 259748 0.85 2502340045 S118461 6.00 88850 012 7815782 6 1 JVC HRD170 video head 15.65 each NEW - NEW - NEW Hey look time is money, if your workshop is Computerised then ask for FREE evaluation disc with your next order on: "WORKSHOP MANAGER PLUS" Only available from us. Ask for 1994 full catalogue SOLE DISTRIBUTORS IDLER TIRES 1.t..1..,--71:3 cr->fzill RA100 - DESOLDERING STATION RA100 DESOLDERING STATION 225 + 12 + VAT RA100 + DS 3102 IRON 225 + 65 + 12 + VAT Overseas postage accordingly. 5% surcharge if paying by credit card. DON'T FORGET ES TIRE. DUE TO RECESSION PRICE IS THE SAME MIN 3PKTS PER ORDER. Please phone us for the types not list ed Please add 60p post 8 packing and then add 17 V. VATto the total. Callers by appointment only. J.J. COMPONENTS 63 THE CHASE, EDG WARE, MIDDX. HAS 5DN, ENGLAND Tel Fax: 081.9524641 Hotline No: 081-381 1700 ' Free fax orderl in e 0800 318498 this with its predecessor. An alternative, later format uses 48 bits per message: in theory it can cater for four billion different product codes! With this format the final 8 -bit parity code is used for truth checks by the microcomputer chip. Variants The more exotic types of handset all use the technologies we've described in this and the previous instalment. Switch - able (VCR1/VCR2/TV) units have programmable digits in the address word. Bar-code scanners log the digital code picked up from the paper, store it in an internal register and transcode it to produce IR commands. 'Learning' handsets store the sampled code in a sustainable memory and then use it as necessary. 'Universal' remote -control units, and the VideoPlus stand-alone unit, contain a vast range of control codes in a ROM: once the right code has been found and locked in (usually by trial and error) the appropriate section of the look -up table is thereafter used. With the VideoPlus unit every combination of date, time, programme length and channel is given a unique code consisting of up to seven digits. These are published in the programme guides, banged in by the user and then translated, when the moment comes, into IR coding by reference to a ROM look -up table that's separate from the one which determines the custom code. The type of handset that offers LCD programming for timed VCR recordings incorporates an on -chip LCD segment decoder/driver and a 'long' register in the handset chip, with a corresponding decoder chip at the receiver. A typical stored data stream, released when the transmit key is stroked, starts with the usual custom code and truth check then provides a date byte, mode byte and a day/week byte to indicate timer, daily/weekly cycle, clock mode and programme number. The following five bytes convey channel and stop/start time data. Subsequent byte groups carry similar data for the other programmed events as necessary. On receipt by the microcomputer the data is decoded for display (user confirmation) then logged in protected memory for release (perhaps along an I2C bus) when coincidence between real time and memorised start time is detected. Next Month In the next instalment we'll be taking a look at digital picture processing, mainly in relation to 100Hz flicker -free displays. CORRECTION AND SERVICE TIP CD Player Casebook, page 435, April: Nick Beer tells us that as a result of computer corruption the Sony CDX5080 fault report was incorrect as published. The error display was ER4, not ER$. This indicates a focus problem, not low output from the laser unit, though checks proved that the laser's output was in fact low. Ferguson ICC5 Chassis: With reference to David C.J. Tilley's letter (April, page 396) Nick Beer points out that if the PIN is not known the child lock can be released by pressing ihe four fastext buttons on the handset in sequence, holding the last, yellow one in for four seconds. TELEVISION MAY 1994 493

VCR Clinic Toshiba V110B If the machine won't take in a cassette (no capstan rotation) check whether transistor TT68, type BC557, is open - circuit. P.B. JVC HRD640 If the machine is dead with 'Set Clock *' in the display the child lock is set. To clear it use the remote control handset to send a power -on command - the customer did send you the remote control unit, didn't he? P.B. Sharp VCH84 This is a newish machine that boasts a single -chip (TB1204F) Nicam decoder. Unfortunately for most of the time the output from the right-hand channel was lost in a sea of crackle and hiss. Resoldering a bad joint at pin 24 of the TB1204F wonder -chip IC1701 restored good sound. E.T. Mitsubishi HSB31/41 This machine would be brought into the workshop about once a month with its mechanism jammed in the fully -laced position. One touch was sufficient to release it, after which the machine would be o.k. for another month. The mode switch can cause this but had already been replaced. Cleaning, degreasing and then lightly lubricating the loading mechanics, including the half -loading arm pivot, joint gear, main cam and the vertical shafts that carry the pinch roller and pinch roller spiral cam, provided a permanent cure. E.T. JVC HRD830 This was a strange and unusual fault! The capstan motor would rattle and roar in the play mode, the playback picture showing that there was no capstan phase lock (noise bars cycled over the picture at a rate of about three a second). If the CTL pulses were removed - by playing a blank tape, lifting the tape from the ACE head or shorting out the CTL head winding - the motor would settle down. After a long search we found that C405 in the servo circuit was leaky - it read about 8000. E.T. Akai VS22 The design of the power supply section of this machine is not of the best. As they age, we are getting lots of these VCRs in for repair with symptoms that range from ripple, hum and interference on the picture to intermittent and `weary' deck operation or complete loss of functions. Akai can supply a reasonably -priced replacement PSU board, part no. 99002209, but I find it less trouble to replace all the electrolytics on the board. There are lots of them, but they are small, inexpensive ones. No machines have bounced after this treatment. E.T. Hitachi VT520 Printed flexible ribbons are used to link the tape -end sensors to the main PCB in this model. A common cause of prob- Reports from Philip Blundell, AMIEIE, Eugene Trundle, John Edwards, Richard Newman, Mike Leach, Michael Dranfield, Dave Mackrill and Keith Evans lems, mainly concerning the end sensors, is poor contact with the edge connector at one end or other of a ribbon. The usual symptom is failure to accept a cassette or retraction of the cassette after ejection; or alternatively deck shutdown a few seconds after entering the forward mode. The cure is to clean the connectors and ribbon ends. We are now starting to find worn audio/control heads in these machines. The first indication of this is loss of capstan servo lock with a machine's own recordings. E.T. Philips VR6470 There was no i.f. output from the tuner. Checks showed that the tuner and SAB3036 CITAC chip supply voltages were o.k. but the tuning voltage remained at zero. 33V was present at pin 9 of the CITAC chip but there was no output at pin 8. As the I2C bus lines were o.k. we changed the chip. That did the trick, and the tuning points were still stored in the memory - all four channels were available straight away. E.T. Amstrad VCR6000 If the complaint is that the machine keeps changing from SP to LP at random, replace the 14DN363 chip IC402. It's the control pulse amplifier. If the customer complains that the sound is also poor, suspect the audio/control head. Mind you, it could be both! J.E. Panasonic NVJ35/G Deck This G deck machine came in with a jammed mechanism. Thanks to Nick Beer's excellent article on the deck (May 1991) I now rebuild them with confidence. It's important to check the rack assembly on the right-hand cassette housing side. With the arm in the down (horizontal) position, the arrow on the nylon gear should line up with the one on the rack. If it's out by just one tooth you can get nasty crunching noises when ejecting the cassette because the switch on the side piece is in the wrong position and the capstan motor isn't switched off in time. As a result it tries to force the housing beyond its stop, crunching the gears. This occurs with any machine that uses the G deck. With this particular machine the rack was two teeth out. This is the reason why a complete rebuild was required. The right-hand side piece is also prone to damage: it's available as a complete assembly. R.N. Philips VR6542 This Sharp based machine was in permanent rewind. After checking the light sensors I removed the cam assembly to get at the mode switch and found that it had fallen apart. When a new mode switch had been fitted the machine would wind and rewind but wouldn't play as the capstan refused to turn in this mode. I made various checks and was beginning to suspect the system control chip IC801, though I've never known one of these to fail. There were some peculiar voltages around pins 25-28 - they were varying slightly up and down. A look at the print 494 TELEVISION MAY 1994

side of the board showed that these pins are covered with a piece of sticky foam that's used to isolate a couple of capacitors from the PCB. I decided to remove the foam to check whether the chip's pins were dry -jointed. They weren't, but when I checked the voltages at pins 25-28 they were now correct. Not only that, but the machine now worked. I looked at the piece of foam and checked it with a meter: it had a resistance of a few kq! There was another fault with the machine: the counter didn't work (though pulses were present) and it wouldn't change channels. The cause? You've guessed it! A similar piece of foam fitted to the back of the front control panel. Once this had been removed the machine worked perfectly. R.N. Samsung SI1260 This machine could be switched on and produced normal displays. It wouldn't respond to any key operation or accept a tape however. IC206 has given trouble in these machines, so voltage checks were made here. A low supply voltage led us back to D212 (1N4001) which was open -circuit. Normal operation was restored after fitting a replacement. R.N. Saisho VR905S This ageing machine produced very poor E -E and recorded pictures. It gave the impression that there was an a.g.c. fault somewhere in the i.f. strip. This turned out to be the case: when heat was applied to C10 (0.47pF, 50V) on the i.f. panel the E -E and record pictures were o.k. All was well after fitting a replacement capacitor. M.L. out. This showed that during the fault condition the 5V supply to the tuner's internal prescaler dropped to 2.5V. No single component in the 5V regulator circuit seemed to be responsible for this, so to be on the safe side we replaced the lot - Q2, R7, D4, C16, D3 and C15. This cured the fault. M.Dr. Toshiba V110 This machine was dead with no 12V standby supply. We found that resistor RP14 in the power supply was hot: well it would be with a dead short across the 12V rail. The cause was the 15V zener diode DP011, which is connected across the 12V line to provide protection in the event of TP03 going short-circuit. A check showed that TP03 was all right, and a long soak test brought no other possible cause of DP011's failure to light. M.Dr. Ferguson 3V29/30/JVC HR7200/7300 One of these machines intermittently refused to load. All the usual things - the load switches, sliding plate under the supply reel and of course the loading motor and belt - were checked and it was only when, in desperation, I was about to replace the complete loading block that I noticed several broken strands on one of the motor leads. Presumably it had become fatigued over the years, during successive belt changes, reducing the motor current. I find that with these machines it pays to remove and inspect, with a magnifying glass, the mechacon panel: you will usually find several ringed and crystalised joints. Resoldering these will prevent a number of confusing, intermittent fault symptoms. D.M. Philips VR6460 The display lit but there was no other operation. If the machine was powered up it would immediately shut down. There was also no capstan motor shuffle when the mains voltage was applied. As a tape couldn't be inserted, I started by making some cold checks in the power supply. Basically the 12V supply was missing, or rather it was being dragged down to approximately 1.2V, because of a short on the audio board. The cause turned out to be C2024 (330pF, 16V) which was very leaky. Replacement of this item cured the power supply problem and restored normal operation. M.L. Hitachi VTM830E The customer's complaint was of not being able to get a tape out and poor pictures. As an aside, why is it that when a customer complains about failure to eject tapes there's hardly ever a cassette inside the machine? I think we all know the answer to that one! Anyway, back to the fault. The loading was very slow, and when the cassette had reached its down position in the carriage the machine immediately started a slow rewind. We connected it to a monitor and found that a very bad hum bar was present in all modes. The cause was traced to C857 (4,700pF, 25V) on the power supply panel. It had become very leaky. A replacement restored normal eject operation without having to dig the cassette out with a screwdriver or whatever else it is that customers use! M.L. Ferguson FV43H There was intermittent loss of the signals from the tuner, leaving only snow. As fitting a replacement tuner (very expensive) failed to provide a cure further investigation was carried Sharp VC750HM Our friend Malcolm reported that the playback picture would sometimes disappear, leaving a fuzzy display. He said that initially the picture would return to normal when he tapped the top, front left-hand side of the machine. More recently he'd found it necessary to place a house brick on the right-hand side of the metal case, with a 31b club hammer on top of that! As this no longer restored normal operation and no amount of banging, thumping or leaning on the case would do the trick he decided that it was perhaps time to seek professional assistance. When I checked the machine with a test tape it worked normally for some time. Then, during an assault on the righthand corner of the case, the display suddenly disappeared behind a sheet of noise. I whipped off the top and tapped the f.m. preamplifier can at the rear of the lower drum assembly. As this brought the picture back I removed the module and found that all the connections to plug ZA, which fits on to the lower drum, were fatigued. The soldered joints had fractured, leaving a ring between the pins and the print. After resoldering these and the connections, which appeared to be almost as bad, to plug XA none of Malcolm's efforts would bring the fault back. He departed happily with the poor old machine tucked under his arm. D.M. Sony EVA300 We don't see many of these very nicely engineered Video 8 machines so there was some headscratching when this one appeared with an inoperative cassette compartment door. On a hunch, and without the aid of a service manual, we checked a couple of the more obvious circuit protectors (PS101 and PS102) mounted at the rear of the top PCB. The N5 value protector was open -circuit. K.E. TELEVISION MAY 1994 495

ECONOMIC DEVICES 32 TEMPLE STREET, WOLVERHAMPTON, WV2 4AN 15/80H 3.83 2501398 0.80 250401 3.46 88814 0.28 60189 0.48 61870 0.23 880960 0.27 LM393N 1.19 SD82112 11.00 TA7122BP 0.63 TDA11706 1.38 TDA9503 1.13 15/858 3.64 2SC14138 170 250438 0.34 861056 0.24 80190 0.31 61959 0.18 BYVi56 0.46 M19261 1.86 SG264A 10.62 TA7146P 7.10 TDA1170S 1.16 1E01002 4.98 11052 3.85 2501509 0.72 250476 097 8C1076 0.21 60201 0.40 6E960 0.27 880655600 0.20 M2IC 1.65 SG613 18.79 TA7176P 1.78 T0011901 4.91 1E01009 1.61 17053 2.30 2501520 0.54 258525 1.27 BC108 0.15 B3203 0.46 61966 0.61 CA1310E 0.78 M293 14.63 SGSIF344 6.93 167193AP 6.11 1261200 0.91 7E01014 1.87 17088 2.38 2501573 0.36 250551 3.58 BC109A 0.16 8D232 0.45 61970 0.30 CA3094 3.06 0490 15.30 SKE4F104 0.97 TA7193P 7.09 1DA1270 1.19 1E01039 2.15 17089 3.39 25015730 0.26 250613 1.91 130109B 0.15 80234 0.34 8E839 0.43 CD4001 0.21 M491 7.94 SKE4F210 0.81 TA7205AP 1.68 7001412 0.77 TEA2018A 149 17127 1.71 2501675 0.09 25D636 0.19 BC117 1.14 80237 0.30 61841 0.44 CD4011 0.21 M50115AP 3.24 SKE5F310 1.60 TA7207P 1.68 TDA1506 4.59 1E02164 2.68 164001 0.04 2501685 0.21 2SD637 0.16 BC139 0.33 BD238 0.24 81890 0.61 CD4013 0.34 /0511021. 1.77 511430 1.57 TA7210P 1.50 10A1510 3.40 1E02165 6.26 1144002 0.01 2501740 0.14 2S0667 0.39 BCI40 0.21 BD239 0.29 810908 0.11 CD4016 0.14 0512317 2.03 S11431 1.70 TA72I4P 3.14 TDA1512 3.11 110106D 0.82 164003 0.05 2501741 0.17 250669 063 8C141 0.34 80241 0.41 8E091 0.60 CD4021 0.43 81513938? 4.64 SL1432 0.54 111721782 1.31 TDA1515A 2.54 T1C1060 0.75 164004 0.07 2501815 0.17 252669A 0.63 BC147A 0.06 130243 0.39 8E096 0.53 CD4052 0.29 81515151. 2.01 80.471 1.10 TA7222 1.60 70015168 3.56 11C45 0.59 164005 0.09 2501826 0.12 250716 1.46 80148 0.12 602430 0.43 BFW92A 0.48 CD4053 0.39 M515211 0.54 SL490 2.64 107222AP 1.81 70015180 3.32 111100 0.52 164006 0.06 20827 1.00 250718 2.21 801480 0.06 BD243C 0.44 BFX85 0.55 CD4066 0.30 052181 1.59 SN29764AN 1.99 107227P 2.29 10816708 211 TIP110 0.36 164001 0.06 2501845 0.26 250734 024 BC1488 0.04 022440 0.34 81850 0.34 CD4069 0.11 052311 0.55 56747414 0.30 7072307 1.80 7001701 3.67 11P112 1.71 164148 0.04 2501846 0.51 250762 1.10 8C149 014 BD244C 0.42 131851 0.34 004070 0.21 M53216P 2.18 5676013ND 1.91 TA7233P 1.95 1201870 3.31 TIP112H 0.58 1144448 0.06 2501923 0.14 20774 1.15 8C1490 1.04 BD245C 0.92 60100 0.27 CNX62A 3.83 0545431 1.91 5676227N 1.07 TA7240P 2.46 TDAI904 1.21 11P120 0.51 165061 0.38 2501942 3.57 207872 0.46 BC157 0.13 BD246C 0.91 00101 1.15 CR3CM 3.44 14545141. 2.41 56766666 2.21 707241 2.30 TDA1905 1.21 TIP121 042 165402 0.12 2501959 0.11 250837 0.90 8C159 0.06 802780 0.56 BR103 0.53 CR02801 2.17 61545481. 4.95 SN76705AN 1.10 TA7250 4.03 70019080 3.42 11P126 018 165404 0.13 2501969 2.46 250841 1.45 80161 0.27 110317 1.20 BR303 1.22 CV120 4.49 M5464481. 3.30 STA3410 2.54 TA7267P 2.02 TDAI940 2.77 T1P132 0.46 165406 0.12 2501983 1.87 250856 1.03 80167 042 60318 1.29 BRX44 1.02 C010910 7.15 M54648L 6.17 STA401 4.101A7270 1.00 1001950 1.86 117137 0.48 165408 0.12 2502001 0.22 252869 5.10 BC1718 030 6D380 0.34 BRY56 0.43 DTA124EF 0.13 M54898AP 20.45 STA441C 2.00 TA7270P 115 TDA2002 0.85 1172955 0.83 16914 OM 2502073 0.77 250870 3.81 BC177 014 BD433 019 85538 033 DTA144EF 0.11 M58485P 5.95 STK0029 12.01 TA7271P 2.65 7002004 1.44 117290 0.30 151555 0.22 2502078 0.85 250871 5.08 8C178 0.25 604348 0.34 67120 1.28 ER1400 6.45 083730 2.30 ST00039 7.11 TA7273 3.64 TDA2005 1.44 TIP29E 0.46 22076 8.29 2502141 1.48 250880 0.48 8C1821 0.06 60435 0.38 67129 4.38 8811235 1.95 083731 2.88 5100040 7.40 TA7274P 2.72 7002006 1.06 1173055 0.94 2622190 021 2502166 1.21 250882 0.43 0C1821B 0.06 BD436 0.32 61139600 1.17 8011244 5.04 083732 3.05 S180059 9.75 TA7280 2.69 7002009 1.29 117300 0.17 262222 022 2502168 0.85 2508988 7.78 BC184 0.09 80437 0.32 131151/5008 1.10 HAI124A 0.98 MCI3002P 1.60 5110025 1051 TA7299 2.63 TDA2020 3.12 11P310 0.32 262905 0.21 2502236 0.36 250904 5.95 BC184L 006 BD438 0.31 81151800 1.15 HA11423 /81 MC1310P 015 S103042 7.19 167313AP 0.62 10020308 1.94 11P318 0.30 2/12926G 0.31 2502271 0.36 250973 038 BCI84LC 010 BD441 0.34 80205 1.11 HA11440 3.46 MC132702 1.62 5103062 1.11 107317P 0.93 70020300 105 TIP3IC 0.41 263053 0.36 2502274 0.31 741500 0.21 BC204 0.14 80442 0.29 81.12086 1.44 HA1166X 3.43 001330011, 126 STX4131 7.79 11173257 1.83 TDA2170 301 TIP32A 0.39 263054 0.98 2SC22746 0.31 7805 0.49 BC2078 023 80510 1.34 822080 1.61 1411713 2.12 MC13507 1.82 8124141 12.46 1073438P 0.72 1082270 3.03 117320 0.38 263055 816 2502314 0.33 7808 0.51 8C212B 0.06 80529 1.61 623288 1.36 HA11741 9.40 0013527 1.15 51164142 1/1 1013587 0.78 7002530 4.24 717330 0.92 263442 1.00 2502335 1.43 7812 0.30 BC212L 0.06 BD530 1.10 80406 0.68 0011745 5.49 0013587 1.59 51641620 9.51 TA75358P 0.68 TDA2540 1.12 TIP33C 0.80 263702 0.11 2002458 0.12 1815 0.82 8C213 0.11 82535 0.43 804060 1.02 HA13001 1.86 MC145286CP 5104171 13.20 70760707 2.83 TDA2541 1.10 T1P34C 0.89 263704 0.14 2502482 0.34 7818 0.41 BC2141 0.09 82536 0.41 130407 0.53 8013108 3.56 1.71 510418111 15.97 TA7609P 2.99 7002560 4.81 117410 0.38 263773 1.21 2SC2547E 0.24 7905 0.34 BC237 0.10 KM 0.30 884070 0.91 8013118 1.87 0002062 3.19 51041818 12.46 TA7630P 1.87 10825760 5.95 11P4IC 0.43 263819 0.55 2502565 6.01 7912 0.43 BC2376 0.08 BUN 0.32 604260 0.96 8013119 2.03 0129550 0.91 5104332 5.91 107640AP 0.68 10025770 4.25 117420 0.42 263904 0.11 25025700 0.29 AAI19 0.36 BC238 0.11 82707 0.51 80426E 2.13 Ii013403 5.98 01802 2.31 8104352 1.70 107676P 4.25 70025780 2.55 11P420 0.43 264444 3.22 2502577 9.99 AA143 0.13 BC2386 0.05 60839 0.68 88500 2.00 HAIM 1.62 /1.1013005 105 8110431 1058 107680AP 4.50 7002581 1.52 T1P47 0.51 266292 0.62 2502581 3.05 ACI21 0.11 BC239 0.04 60901 0.51 BOOM 0.95 801388 2.63 M1E2955 0.68 5104392 5.92 107698AP 5.93 10025810 14.54 T1717914 1.24 2501015 0.10 2502632 0.43 ACI410 0.46 8C252E1 0.07 60902 0.51 8850801 1.31 801389 2.52 M1E3055 0.51 5114441 14.43 1077057 1.68 TDA2582 1.95 T1543 0.99 2501016 0.26 2502655 0.31 0C1760 0.38 BC300 0.40 60911 0.41 805080 1.27 HA1392 1.61 88E140 0.50 S104459 11.17 107769P 3.01 1002591 2.27 11.011CP 1.36 2501020 0.43 2502671 0.68 AC187 0.16 BC301 0.28 80912 0.63 8050801 1.61 8801397 2.63 ML923 14.76 511(461 12.29 708205 3.89 7002593 0.75 TL071CP 0.38 28010208 0.43 2502688 0.52 ACI81K 0.33 BC302 0.36 6011658 1.16 MOP 1.65 8801398 2.33 00140546F 14.50 5104843 15.46 1082100 4.14 1002594 211 TL494 1.61 2501095 7.44 2502785 0.36 0C168 0.36 8C303 022 BDW84C 1.20 BU526 1.61 8681452 4.86 06143540 14.35 51105211 15.78 TA8215 4.57 1002595 3.19 1h1747043207 2501102 2.54 2501791 5.44 AC1880 0.82 80307 006 80W93C 0.59 60536 110 806232 10.46 0614350X810.66 5105322 6.35 TA8691N 1.81 TDA2600 5.98 11.24 2501143 0.17 2503150 1.53 AD149 0.52 8C3070 0.116 80W94C 060 88608 1.44 HM6251 9.52 08650 3.23 5165325 59.15 TAG626 1.35 1D026110 0.64 1MP47C434N- SPECIAL OFFERS_ ENDS 30/05/94 OR WHILE STOCKS LAST BU208A x 5 3.99 TDA 3654 x 2 2.50 BU 426A x 5 3.75 TDA 4601 x 2 2.55 BU508AxS 3.60 STR 54041 x 2 6.00 BU 508AF x 5 5.00 STANDARD VIDEO SENSOR LAMP x10 2.50 BUT 11AF x 5 3.25 STANDARD VIDEO SENSOR LAMP TV FAULT FINDING GUIDE 9.99 PLUG x 10 4.00 VIDEO FAULT FINDING GUIDE 9.99 VTIIE ETC. BELT KIT x5 5.50 SATELLITE FAULT FINDING GUIDE 14.95 3V29 ETC. BELT KIT x 5 4.50 CO AXIAL AERIAL PLUGS x 25 3.75 3V35.6 ETC. BELT KIT x 5 4.25 2801115 1.25 2503153 2.31 ADI61 1.12 60307B 0.06 80032 1.11 60105 1.61 HM7I03 16.44 1475842 1/3 81145326 1.16 TBA120 053 100261100 2.57 3555 11.81 2501186 720 2503156 6.61 A13162 1.96 80308 0.11 BDY20 2.13 BU806 012 1CH281 0.21 075056 012 5785331 2.31 111012005 090 7002640 4.13 003844 4.19 2501208 1.34 2503182 2.49 AF124 1.17 8C3084 0.09 81115 041 81.18060 010 KA2101 013 075093 011 5185332 2.09 113A120S 089 7002652 14.32 UP081C 1.12 2501265 2.96 2503225 0.50 07127 0.77 BC308C 0.06 61179 0.31 8080796 0.51 68108 047 07854 8.65 5105333 12.63 11381201 051 TDA2653A 3.26 006118111 6.80 2501286 055 2SC3795 1.95 02139 021 BC327 010 6E184 0.41 808260 2.40 6581004 009 08M584011 15.36 5105372 3.40 1801200 0.39 7002680 5.10 006118211 5.95 250473 071 250380 0.12 AF239 043 BC3278 0.11 6E185 0.29 BU908 1.17 L20000 2.19 MVS240 0.53 5105421 2.60 TBA2800 3.30 1003190 117 00611851$ 10.20 250562 0.17 2SC388A 0.59 AF279 034 BC328 0.01 6E194 0.22 131.114444 2.38 101201 0.56 NE545B 3.20 ST65422 6.38 1130395 0 68 TDA3190P 1.36 070118.8 3.83 250634 0.54 250458 0.10 81.102 6.35 BC337 0.01 61196 0.15 BUTII 089 LA1230 1.95 NE555 0.21 ST65451 5.71 1130520 015 TD033008 20.08 UPC1212C 0.83 2SA639S 0.83 250536 014 A638210 723 803371 0.22 81197 0.34 BUTIIA 1.05 111385 2.51 NE5556 0.31 S105466 5.66 180540 1.97 TDA3330 10.18 UPC1228HA 0.56 250673 0.09 250710 0.12 AN5265 1.75 BC338 0.06 81198 0.17 BUTHAF 085 1A3161 040 NE592 1.15 STK5471 4.87 TBA5400 0.77 7003541 095 UPC1230 2.82 2SA684 0.60 2SC861A 5.25 AN5435 1.45 BC368 0.25 87199 004 BUT12A 1.13 104140 0.37 NE646N 3.39 STK5476 5.00 TBA560C 2.02 TDA3560 3.65 UPC1230H 3.95 258733 0.17 250945 0.12 045512 1.83 60369 0.17 6E200 0.39 BUT56A 1.19 014182 1.75 671106 11.86 ST05481 1.55 1805100 1.77 10635610 4.19 UPC1278H 2.66 250769 1/7 2501051 0.411 095515 2.19 BC372 0.62 81240 0.11 BUWII 0.99 LA4192 1.59 0047 025 5105482 6.41 780651 1.01 1003562A 4.91 0701318 2.96 250798 0.56 2501128 1.02 0145521 2.14 1305468 0.06 B1244 0.43 BtAVIIA 090 IA4220 8/A 0090 0.59 ST66962 4.91 1807500 5.10 TDA3565 2.85 07013350 3.91 2501322 014 2501138 0.94 AN5612 4.15 BC547 0.11 BF245A 0.19 8179418 1.82 114261 2.19 0091 015 8107216 7.28 TBA800 0.51 7003566 3.40 117013510 1.70 25.88720 0.28 25E11207 0.35 AN5900 1.44 BC547A 0.04 812458 0.41 BUW818 2.29 04210 2.73 R2540 2.91 S1X7226 1.14 TBA810P 1.66 10035716 3.40 0701353 1.34 250940 0.82 2501265 0.77 0N6310 4.69 BC5478 0.11 81255 0.11 61N184 1.11 LA4282 2.65 R2540X 1.92 ST07308 5.50 T00810S 0.66 TDA3576 11.90 UPCI363C 1.06 250952 0.11 2501273 1.11 0146326 5.08 BC548A 0.29 BF256 0.24 BUX84 044 LA4422 1.36 020 1.15 ST07348 4.91 MA820 0.85 7003640 5.92 070136300 2.13 250958 1.44 2501275 0.88 0806341 320 BC5480 0.18 BF256LC 1.67 BUX85 092 104440 2.40 03297 6.06 8107356 1.31 7808201 0.55 7003650 11.11 UPC1365C 1.10 2509660 0.41 2501276 0.85 M46610 0.93 BC548C 0.12 81257 0.36 80171 0.52 LA4445 1.61 04050 2.38 ST07358 5.81 7808200 0.44 100365300 1.92 1iPC1378H 2.52 250970 0.36 2501279 7.62 AN66716 8.66 BC549 0.11 61258 0.04 BY127 0.17 LA4460 1.48 R4051 3.18 S1R1096 4.67 188920 2.75 188365311 1.86 0PC139108 0.52 250984 0.38 2501292 0.41 AN7158 3.30 8C5566 0.15 BF259 0.31 BY133 0.08 LA4461 1.48 R8156 2.24 S1R40090 071 188950 1.61 MA3654 1.89 UPC1394 1.55 2S81010 034 2501308 0.94 0/47161 3.56 8C557 0.07 BF324 0.12 80164 0.61 104475 3.09 RGP15 041 S1R4090 16.36 180970 4.08 7003810 2.55 UPC1420CA 7.69 2S8546 094 2501397 1.09 A0717114 4.68 BC5576 0.06 BF337 0.34 88179 0.80 L84476 2.79 08715.1 1.35 51124211 4.72 TCA270S 1.03 7004420 1.27 870148811 1.78 258633 1.31 2501398 2.13 80145 0.11 8C557C 0.11 BF338 0.43 8Y184 0.42 LA4500 2.17 0887300 8.30 S1R440 11.54 TCA440 2.13 1004427 3.18 0702002 2.08 2SB643S 0.29 25D1426 2.54 8A156 0.06 8C5586 0.06 81355 0.48 BY206 0.20 104505 2.52 RMIIC 1.71 510441 15.95 TCA660B 0.43 7004442 3.49 UPC324C 4.03 256644 0.34 2501427 2.19 130151 0.07 BC559 0.11 BF392 0.23 BY207 0.18 184508 2.29 5200001 1.46 S112451 15.13 1C08000 1.65 1004500 4.66 UK4558C 0.65 256688 111 2501432 4.08 80158 0.07 BC560C 021 BF393 0.17 88210400 0.19 10/520 1.49 0205501 1.81 STR50020 9.02 TCA910 1.21 1004501 5.08 UPC574 1.01 256772 0.43 2501439 305 BA159 025 BC635 0.19 81422 019 61224600 5.10 LA4700 4.27 2530A 1.31 S11150103 6.92 TCA940 3.40 TDA4503 3.38 UPC580C 2.55 25137720 0.43 2501453 1.87 6A317 0.19 BC637 0.15 81423 0.14 BY226 0.16 LA5112 5.89 501004 810 STR54041 5.99 111319001! 6.57 1004505E 4.64 07019370 3.15 256793 0.43 25D1497-02 6A318 2.03 BC639 0.14 6E435 1.91 BY227 0.14 LA5512 011 501121 1122 STR5412 6.15 70010040 4.35 7004600 2.29 80065CE /20 258819 0.41 8.03 8051020 2.00 BC640 0.06 81450 0.19 BY228 0.38 Uk7223 2.54 5841174 5.10 STR58041 6.35 7001011 1.27 1004600/2 2.72 02402 412 256861 1.10 2501497-06 8A536 2.00 BC879 0.39 81458 0.30 BY229 1.64 107520 2.75 8081250 2.92 STR6020 11.15 70010110 1.41 100460020 3.54 0/1020 N A 256891 0.52 7.06 605406 2.12 BC880 138 81459 029 81229600 0.92 L07800 1.44 501251 6.30 S110602061T 15.05 70010130 1.56 MA46001 1.70 111650 0 51 2501008 0.24 2501541 5.56 806109 1.85 BCY70 0.07 81469 0.34 88229800 1.02 L07801 1.27 58*1351 8.23 16064V 2.63 TDA1015 1.37 1004601 1.80 27X753 1.12 2501061 2501096 2501114 2501162 2501213 250124 2501306 2501318 2501364 2501384 0.83 0.50 2501555 25101577 1.16 2501649 0.31 2501650 0.14 2501876 0.44 2501877 1.16 2501911 0.19 250234 250313 NIA 0.34 2503500 2.00 606209 4.64 806219 2.03 806222 2.47 8A6566 6.07 A718 2.12 ASII 5.06 0018 0.89 AV20 0.56 AV21 1.73 AW62 1.46 1.76 1.61 0.64 0.11 N/A 0.07 0.26 0.19 0.11 82131 BD132 BD135 80136 8813/ 80139 80140 80168 60175 80179 0.28 0.21 0.33 0.20 0.45 0.41 0.24 0.76 029 0.34 6E470 81480 814935 61597 81157 81158 81759 BF760 81762 811369 0.33 1.10 11/A 0.16 0.43 0.32 0.36 0.24 0.29 0.25 BY238 BY255 BY298 BY299 B1476A 670140 810330 81033.1 811110-40 880950 0.31 0.14 LA7820 LA7830 0.15 10113038 0.19 101877 0.68 1/13171 0.31 1013248 0.68 1033914 0.21 10358 2.20 103586 0.44 1/038080 2.71 1.27 0.88 1.45 052 1.41 015 1.60 8.42 1.03 SA430277 SAA5010 58*5012 5005030 5005050 5083013 5083021 SA83035 50210327 5611039 7.62 4.60 4.85 6.42 0.49 5.81 6.15 6.35 11.11 2.44 160760 19013V 19034V 19035V 1903811 T90530 T90540 19064 1906511 TA7063P 5.45 9.33 1001020 TDA1035SB 1.27 4.15 10046010 1204605 2.42 3.00 OVER 1.45 TDA1035T 1.87 TDA4950 1.71 1.50 TDA1037 050 TDA7240A 2.36 10.000 6.09 TDA1044 1.43 TDA72705 10.17 0.92 TDA1060 1.73 TDA8140 2.38 DIFFERENT 1.65 7001082 4.25 7008153 3.61 1.39 7001083 1.19 TDA8170 2.58 DEVICES 6.06 1001151 0.51 TDA8180 4.81 1.14 TDA1110 1.95 208190 3.30 IN STOCK IF YOU'DON T SEE IT LISTED ASK FOR DUPE GIVE MAKE. MODEL LOCATION. REMEMBER TO ADD E1.00 POST K HANDLING U.N. MAINLAND ONLY. HANDLING CHARGE TO ALL EXPORT ORDERS AT COST. ADD 11'. 0 VAT TO TOTAL 496 TELEVISION MAY 1994

MClutch USE YOUR ACCESS OR VISA ea TEL 0902 712083/773122 (24 HOURS) AMA 11116 Adeo Heed Pinch Roller Bed IN Idler Replacement Set Idler Capstan Motor Tension Band Red Table Rubber lyre 01 Und A177 Ade Head Han Roller Bel m Idler Replacement Se FWD tinter Idler Idler Capstan More Tension Band CEL Ixut AKA1 13-1100 Video Head Hal Roller Bel Ka Tale Up Idle REP Idler FT Rutter Tyre FT Rubter ire Goading der Rubber bee Capstan Motor Dun Ador Cassette Lamp Tenser Band Repay IN lake Up Rubter Tyre ALBA 904000 Video Head Han Roller Bet IN Idler Cassette LEO Tension Band AMSTRAD 8C8-4601 Video Head Pura Rolle Bed IN Dutch Gear Holder RE Clutch Cassette LED VC111003 Video Head Hal Roller Glen RF Clutch Clutch Gear Holder Cassette LED 910 1981 BANG & OLUFSEN 91615 Video Head Ran Roller Bed MI FT ARUN Idle firm Gulch Efate Capstan Mena Cassette LED DECCA 1111-8303 Video head Pnch Rohe Ben Mt Red Idler Take Up Clutch lake Up Idler Brake Pad Red Motor Capstan Motor Wading Mole Cassette lamp lenoon Band Repair IA lake Up Red lade Rubber Tyre Supply RN Table Rubber Tyre FERGUSON 3-130 Video Head Poch Rolle Bet IN RN kid lake Up Clutch lake Up Idler Brake Pad RN Motor Capstan ANN Loading Mire Cassette Lamp Tension Band Repair IA Tale Up RN Table Rubber bee Supply RN lade 3-9-X Rutter Tyre Video Head Ptah Roder Ben IN take Up Clutch Tale Up Idle RN Idle Brake Pad Capstan Motor Loading Mote Front Wading Motor Cassette LED Tension Band Remote Card Repair Mt I Awns Transformer Take Up RN TAN Ruder 1)1P Supply RN Table Piker Tire Cassette Housing 3-V-57 Video Read Pinch Roller BeN161 Gulch Mechanism Capstan Mole Loading Meta Front Loading Woe Cassette LED lens= Band Repair IN Cassette Howyng Peak NO 2546 ND 1755 NO 7519 NO 1001 ND 1035 ND 2160 ND 1423 ND 1335 ND 2637 AD 2546 ND 1755 ND 7509 VD 1000 AD 1002 AD 1004 ND 1035 VD 2118 ND 1423 ND 2567 ND 2511 ND 1756 ND 7506 ND 1025 AD 1026 ND 1029 N01030 ND 1207 NO 2119 NO 2120 1401943 ND 1391 AD 1911 AD 1028 ND 2713 ND 1787 AD 15% ND 1619 ND 1981 ND 1399 NO 26/6 AO 1758 AO 7593 AO 1226 ND 1227 ND 1231 NO 1981 NO 2502 VC 1758 AO 7592 nos ND 1226 ND 1227 V10 2506 AD 1788 AD 7538 AD 1020 90 1211 AD 2147 ND 1981 AD 2511 AD 1814 AD 7812 AO 1036 ND 1031 NO 1038 901361 NB 2169 V102164 ND 2168 ND 1947 ND 1389 ND 7913 ND 1080 AD 1080 AO 2641 NO 1811 AD 7812 NO 1036 NO 1037 VIO 1018 A01361 AO 2169 NO 2164 AO 2168 NO 1947 V10 1389 NO 1913 ND 1080 AD 1080 002641 ND 1813 NO 7543 ND 1031 AD 1038 NO 1039 ND 1361 NO 2165 110 2163 AO 2168 AD 1981 AD 1389 44 911 AD 7918 AD 2223 ND 1080 AO 1080 AO 1099 ND 2573 NO 1813 AD 7510 90 1083 ND 2188 ND 2161 ND 2168 VT 1981 AD 1318 AD 7920 AD 1315 Price 11534 11113 013 0/5 0.12 MAO 015 1119 ss 01534 013 0113 013 013 1.19 12 0136 015 04713 010 74 013 Ll 78 027 89.11 LON 615 CON 02534 0023 LOIS 015 L15/7 611 1630 043 8.311 044 0153 2.01 C13.77 015 01.75 1476 C13.14 0178 0153 C1511 0.15 L1.19 133 51.76 113.14 0153 0414 0115 127 nn C9/7 0115 0113 C10.74 015 0132 044011 0121 COM 02197 03/13 51214 COST CI 44 1650 COSI EOM C9 II 115 0182 293 LIB LIB E0.59 0111 03320 01211 COSI Du 01609 COM EOM 611 015 116 028 L129 340 651 02.16 01214 01294 EIS] 0144 E11.01 01151 04.18 C011 0161 01.75 1416 El 15 COM 1510 04316 C14.11 1214 C1.53 02.13 0115 02190 WE GUARANTEE THAT ALL VIDEO SPARES SUPPLIED BY US ARE OF THE FINEST QUALITY AND THAT ALL STOCKED ITEMS WILL BE DISPATCHED THE SAME DAY 1447 MI In Mee 31-57 Moo Head AD 2513 1411 Cxsele LED And, Rona ND 1813 1:115 Tension Band Bell Nt NO 7540 ULU lake Up Reel Idle Gam lilednanism AD ION C1510 Sappy Red Table Capstan Mire AO 2188 1,4519 Fell4FIKA 69 Loading Mire NO 2161 14.11 Video Head Front leading *Ea ND 2113 01211 Pre Rolla Cassette LED ND 1981 153 mit IN Tenon Band AD 1388 113 Idle RePNY AD /920 1115 Clutch Cassette Housing AO 1315 011 10 Cassette AD FV-108 leasioa Bast Video Head VII) 2580 019.73 Sappy Reel Table Ran Rolla AO 1817 Boll M VC 1564 111 FUNAJ die Arm AO 1091 11 908466 AD 2193 01824 slneo Head Ree1 Why Capstan Motor AD 2190 0422 Pan Rolla Loading Wm AO 2112 8927 Bell IN Fred Loading We NO 2412 631 Ciolo Cassette LED ND 1981 0133 Gear Holder Tension Band AD 1386 17015 RF Clutch Cassette LED Repair M VID 7921 8911 FV-171 Video Head CNA 81115143 Vide Head Hal Rolla Belt M AD 2581 AD 1817 Pinch Roller 115.50 Bet AD 7564 0191 016 dle Idler Ann ND 1091 Reid Mote ND 2193 01614 Capstan Motor AD 2190 0812 GEC Wading Mare ND 2412 1:137 P4(04 Cassette LED Print Mang Motor NO 2412 1137 Moo Head Plan Roar Cassette LED AO 1981 C1.53 Tense. Band AD 1386 035 BM IN Vol Repair NO 7921 8911 PR REM non FIDELITY Clutch Pate 908.100 Hider Head AD 2502 11591 Capstan Mote Cassette LED Rah Rohe AD 1758 0.15 Tension Band Repair IN Bet IN AD 7593 E1.75 Clutch AD 1226 64.76 GOLDSTAR Gar Holder ND 1227 E1114 GIN -8000x8200.1210 RF Clutch AD 1231 E7.18 Pal Roller Cassette LED Flta.UX 11-1030 %leo Head Prat Rolle Idler Tension Band AD 1981 AD 2558 AD 1803 VO 1106 AD 1432 E1.53 0412 013 046 [517 Bet IN die Bradel Centre Clutch Gear Um% Rode Cassette LED lemon Band Remote Control IR 91134 61432 9CP-41111x 4130 Repast A NO 7930 V111010 Video Head ND 25711 Ptah Roller NO 1827 01258 6215 ES70 Vda Head Ran Rolle Bet nit de Belt m Braid Cone NO 7588 0110 NO 1252 GINO Geerr Ole Loading Gear V7D 1253 1320 0111 LAM" Rolle Modification 511 1254 01011 Cassette LED Set 'Oran Band AD 1431 1455 Tension Band Remote Coda IR 9034 1452 944411x4316 RSHEFI Moo Head EVITPSA ND 2500 L1/35 Pah Roder REP Bell Video Head Pinch Rolle ND 1788 0.15 Cassette LED Belt Iltt NO 7532 01.35 GRANADA lake Up Idle * 1015 0.65 V115-691 a E12 FT ARP.) PAN NO 1016 694 NAG Heed der ND 1023 020 Pan Rolle Tension Band NO 1378 3276 Ben NA Take Up Red Table Rea Drive Una Rubter AD 1793 6.71 Loading Gear n Supply Reel Table Loading Gear B Rubber Tyre NO 1293 077 Capstan Mae Cassette LED FINP530 Tension Baal Yoko Head ND 2500 L1733 Rem Rolle AO 1788 0.15 GRUNDIG Bell 90 1532 6135 185-490 KA Take Up OF NO 1015 OA Video Head FT xretv Pulley AD 1016 814 Rae Rolle Idler AD 1023 020 Bell IA Tension Band AD 1378 0.76 Ole Take Up Reel Table Loading Gear Rubter ND 1293 89.71 Cluten Gear Supply Reel Table Limiter Rid Rubter ire AD 1293 071 Cassette LED Tension Band Fill -P72077. ME, 721 1110 2503 Mee Head 0139 Remote Control Ptah Rohe AO 1810 01.04 V5-520 GB Bel IN V10 7532 L135 Video Head Gear Idler at 1013 1.451 Rah Rale Idle AO 1014 OA Timing Bet loading Gear Let AD 1230 LIM Centre PAN Cassette LED 00 1981 053 Cassette LID Tension Band VC 1376 GIN Tension Band Take Up RN Table Sappy RN Table AO 1295 ND 1294 6117 0155 HINARI VEL-30x 35.4 Fili-PM7s 725 Ida Head Video Head AD 2501 61137 Ran Roller NO Rolle AD 1810 01/4 Belts Bel NA NO 7813 L1.19 Dutch Gear Idle AD 1013 C451 idle Idle NO 1014 UM Wading Mole, loading Gear Set NO 1230 012 Cassette LED Part No. Rice WAGE* Pan No Ince JAC Pan No Prone Part No. 15.1 Y1-11 HP 4X411 AO 1981 IR 8947 Hem* Calm AD 1316 021 Vylec Head NO 2504 01514 Inch Head /511 CID 74 /leper 161 NC 7919 VH, ND 1235 fa27 Par Rolle VII 1788 0115 Horn Rolle AD 1156 323 Cassette Hoosam NC 1315 IMPORTANT NOTICE The green video comparison sheet is now out of date. We will continue to supply this document because it remains an invaluable reference in the workshop. It has become impracticable to update it due to the greatly increased amount of information now available. The video comparison database now installed in our computer contains AD 25% VC 1757 VC 7567 VC 162 VC 1222 at 1228 ND 1440 at 1981 NO 1400 IR 8965 NC 2595 NC 1821 NC 1482 NC 1482 NO 1981 VC 1401 VC 2518 NO 1815 NO 7566 NC 1316 VC 1317 VE 2167 VI 1981 OVER 50,000 RECORDS If you cannot find the part that you need in the green video comparison list, PHONE NOW!! The availability and cost will be given almost instantaneously A REPLY IN A FEW SECONDS More and more video repair engineers are turning firstly to Economic Devices to locate and supply those more obscure parts, and sooner or later rely on us for all their video part requirements. We are confident that our video comparison database is the largest in the UK and its fast retrieval system makes ECONOMIC DEVICES a must for all your video parts. 015.75 013 115 01 18 0117 029 0133 0137 021 20.79 016/4 09.52 01.16 CA 16 0153 110 0115 015 038 8921 0 77 C14 II 01 53 ECONOMIC DEVICES, 32 Temple St., Wolverhampton WV2 4AN Phone (0902) 773122 Fax (0902) 29052 eau, Tenser Band Repair IA Take Up Rio labe Rubber lyre Supply Reel Table Rubber lyre VR-3993 Video Head Pan Raw Bel M Rea des Take Up CIAO lake Up Idler Rolla Bar Beak Pad RN We Capstan War Loading We Front loading Wm CaSSelle Lamp Tenser Band Repair KA Take Up RN Table Rubter bee Sop* RN Table Rub% Tyre trouble free installation of these typis of systems. Passive, active and combined 01110 FM.'UHENHE satellite multiswitch boxes available from stock. Ideal AO 1385 0144 AO 1913 116.09 ND IOW WM AO IWO 60.68 NO 2641 ND 1814 AD /523 AD HIP ND 1117 AD 1038 AD 1363 ND 1361 ND 2169 AD 2181 AD 2168 AD 2168 I.F. DISTRIBUTION for :nstallation in retail shop or repair department. All radio, TV PRODUCTS FOR satellite signals from one wallpiate down one cable. Prepare now SATELLITE TV for the future by installing a I.E. Distribution has the advantage system in your premises. The over other traditional distribution sales of video recorders and systems in that each room or TV with satellite built in will dwelling has it's own soar. Most systems receiver/decoder which can will be installed this receive all channels as if it had it's way so be ready own independent dish. to meet the Lynk supply a range of demand products to enable simple, Send a self addressed envelope for 13 page booklet and price lists. 110 1516 NO 1189 AD /914 AD INC NO 1080 -ti."7" 6.11 015 L127 0.83 044 129 E4.67 COX 112491 04157 C1214 01164 659 01.44 C13.42 LON lea Up Clutch Take Up der Heel Idler Rave Pad Capstan Odor Loading Ma Fool Loafing Ikea Camille LED Anson Band %Parr IA Mains Transkirres Take Up RN Table Rubber be Sappy RN latee Rade be Cassette Housin) 11195 7ineo Head Rolle bed %chant% Capstan Meta Loading *tor Mont Loading Note Cassette LLD 13018 lens= Bad w0 1031 AD 1018 AD 1039 VD 1361 ND 2165 ND 2168 AD 2168 AD 1531 ND 1139 AD 7918 ND 2223 AD 1080 AD 1080 AD 1099 AD 2514 NO 1813 AO 1540 NO 1082 ND 2166 ND 2167 AD 2168 AD 1981 AD 1381 die 129 0.40 CO 59 025.16 1264 51264 C153 El 44 0251 2411 00 68 DO 61 121 75 035.50 0715 006 51514 05324 11411 01264 01 53 02 55 SALORA 3V-8620 Pan Rad NO MP Bents ND /61 x RCN Idler kin AD 1233 FY 11CW der Horn ND 1234 FF x REP Ole AD 1235 ND 1NI Cassette LED Tension Band AD 1351 Take Up Rea Table AO 1308 sappy Reel Table NO 1305 SAMSUNG 9-510. 521111 /116x621 Video Head ND 2648 Rah Roller AD 1815 Ben NA AD 7598 der AD 1232 db AD 1146 RN Meta AD 240/ Capstan Motor AD 2409 Loading Ado, ND 2142 Cassette LED AD 1581 937710x 720x 71 Video Head AD 2648 Hal Nee AD 1759 Berl KO AD 7608 Cassette LED ND 1981 SANYO V11-111:0 flislang Video Head AD 2583 Han Rolle ND 1181 Leh IA ND 75511 Had Dove Rater AD 1076 RN We AD 2198 Cassette LLD AO 1981 tenon Band ND 1411 MAMA El AC Video Head ND 2585 Rah Roder ND 178/ Belt IA AD 7558 Reel Dam Rolle ND 1076 RN Meta 1411 2198 Cassette LEO NO 1981 Tenser Band AD 1411 1111110x II x 19x 21 Hal Red AD 1758 Bell M ND /809 RN Dine Pulley AD 1079 Idler NO 1219 RN We AD 2119 lesion Band ND 1408 Supply RN Table AO 1319 SFJETRA 11750:0 n1030 Niko Head NO 2/13 Roller AD 1787 Belt IN AD /5% de ND 1049 Cassette LED AD 1981 user Band AD 1399 Pnoe 01490 011 91 L20.10 006 0135 0128 C153 119.19 0.13 C115 090 6015 6012 L121 6.59 029 0719 CHIN ion 7.57 C519 43 LI 53 3211 13088 IA 13 01 19 0127 0159 01952 040 62 Cl 78 (14 01089 E1147 11091 313 0 93 LI 78 LI 57 52 04 0612 El 53 El 53 C2 39 1122 08 57 0315 11 16 El 61 LIN L26.85 016 70 C153 0578 L51 10 010 LI P3 0m 0123 10 61 4 85 C315 El 19 CI 61 1657 CI 53 0 15 031 066 051 1 97 LIN 064 0 37 467 111111 C315 LI 40 1 53 081 51577 2925 16.70 Cl 53 01188 016 012 1153 C22 68 043 0121 CS 18 C1581 81 53 073 L3250 043 121 EN 18 1517 Ll 53 112 0 045 015 077 7A L202 0144 C213 0.77 01630 043 011 01.44 CI 53 001 10.000 Line Calalodue available with order. or by request. SAE please Mars mold are aehiect stock lability and m ay be lunged ortlem dace Orders from bort InstirutIons Schools Nationals etc accepted Beth Aar order T - k - I1- M FAX NUMBER: 0902-29052 TELEVISION MAY 1994 497

TV Fault Finding Reports from Philip Blundell, AMIDE, Nick Williams, John Edwards, Geoff Fardon, Brian Storm, Terry Lamoon, Richard Newman, Nick Beer, Michael Dranfield and Chris Watton Philips CP90 Chassis For a dead set with no standby LED or channel indicator display, check for oscillation at pins 31 and 32 of the TMP47C432 microcontroller chip IC7840. If there's no oscillation check C2934 and C2935 (both 27pF) which can become leaky. P.B. Toshiba 219T9B For a dead set with the STR54041 chopper chip IC801 in the power supply inactive, check for 5V at pin 6 of connector P587. If this is missing R843 (150) is probably open -circuit. Note that it's a safety resistor. P.B. Philips 2A Chassis For a dead set with the over -voltage thyristor firing, check whether C2698 (4.7pF) is open -circuit. For field cramping at the bottom of the picture, replace C2575 (4.7p F). If the problem is ragged verticals and the 140V h.t. supply is low, replace the h.t. reservoir and smoothing capacitors C2697 and C2701. They are both 47pF types. P.B. Ferguson TX99 Chassis This set suffered from either loss of colour or intermittent colour when warm. A new TDA3301B colour decoder chip appeared to cure the fault but the set came back next morning. The cause of the trouble turned out to be 4.433MHz oscillator drift. We replaced the crystal XL1, R60 (1000) and C63 (22pF). N.W. Ferguson TX100 Chassis There was a bright raster with flyback lines. Checks showed that the 200V and first anode supplies were correct so we decided to investigate the beam -limiter circuit where transistor TR60 (BC308) was found to be short-circuit. N.W. Bush 2714 (11AK03 Chassis) If you get a dead set with the 2.5A mains fuse blown you will find that the BU508A chopper transistor TR801 is shortcircuit and the 2.20, 5W surge limiter resistor R801 is open - circuit. In addition to these items replace R809 (270k0), the TDA4601 chip IC801 and thermistor TH802 (CHS part no. 12001GT) in the start-up circuit. Failure of the thermistor is usually the basic cause of this fault. You get the same thing with Grundig, Hitachi and other types of receiver that use a TDA4601 chip in the power supply. N.W. Sony KV1460 (GP1 Chassis) There was neither picture nor sound and the channel indicator LEDs were not alight. User controls such as channel preset, tuning etc. had no effect. The h.t. and e.h.t. voltages were o.k., and increasing the first anode voltage produced a blank raster with flyback lines. Scope checks showed that there were no key scan pulses at pins 5, 6, 32 and 33 of the M50431-511SP microcontroller chip. As its 5V supply was present we replaced the chip. This restored normal operation. J.E. Philips 2A Chassis The job card read 'bang, dead!' There was a short-circuit across the mains bridge rectifier's reservoir capacitor C2659 but the chopper transistor Tr7687 was all right. The shortcircuit was caused by diode D6664 (BYD33J) and pulse capacitor C2664 (1.5nF, 1kV) - the capacitor had split in half. J.E. Philips CTX-E Chassis The symptom with this set was insufficient width with bowing at the right-hand side of the screen. We found that the fusible resistor R3483 (6.20) was open -circuit. As a result there was no drive to the EW diode modulator. J.E. Toshiba 175R9B This set was dead with just a faint whine coming from the power supply. We found that there was a short-circuit in the line output stage, the culprit being C464 (680pF, 2kV). It's connected in parallel with the line output transistor. J.E. Sony KVM2121 (BE1 Chassis) Field collapse was the fault with this set. We found that the ppc1488h field output chip IC501 had failed, taking with it R801 (0.470), the surge limiter in the line output stage derived 24V supply. The circuit diagram shows protector PS501 connected to pin 3 of this chip. In fact it's connected to pin 4 - and was open -circuit. J.E. Grundig CUC2201 Chassis Tripping off/on, sometimes very intermittently, is usually caused by a faulty set-h.t. control (R637, lk0). We renew this item as a routine measure whenever one of these sets comes into the workshop. J.E. Fidelity CTV2022 (ZX3000 Mk 2 Chassis) This set suffered from field jitter. It would sometimes start at switch on and continue until the set was switched off. At other times the display would be o.k. for about an hour, then the fault would appear. Its cause was the TDA1170S field timebase chip IC4. J.E. Toshiba C2020B When the set was cold there was a noise bar that looked like an interference line across the centre of the screen: it cleared 498 TELEVISION MAY 1994

as the set continued in operation. To start with the line would be about 3/8ths of an inch high, gradually decreasing. Use of heat and freezer led us to C317 (2.2pF, 50V) in the field output stage. G.F. Ferguson TX86 Chassis This set suffered from lack of height. A check at the collector of the upper transistor TR8 in the field output stage showed that only 39V was present here. Its 270 feed resistor R62 was open -circuit. G.F. Panasonic TX28W2 (Alpha 3 Chassis) This set's fault proved to be a bit of a problem. R822, the 4.70, IOW surge limiting resistor associated with the mains bridge rectifier, had blown. As no obvious shorts could be measured I fitted a replacement. Then, filled with apprehension, I switched on. Instead of the friendly rustle of e.h.t. as the set came on it squeaked and blew R822 again. This time the safety resistor R555 in the feed to the line output stage had also expired. So R822 was again replaced but R555 was left open -circuit. Up came the 150V h.t. supply, but when the line output stage was reconnected both resistors blew again. The growing pile of IOW resistors convinced me that I had to be brief with my next checks. R822 was replaced but the line output stage was left disconnected. The line drive waveform was then checked. It was bizarre, consisting of just high -frequency spikes. A new TDA2579A timebase generator chip (IC501) was fitted and another quick check was made: the waveform was as before. Eventually I found that C501, a friendly 0.1µF brown Mylar capacitor in the line oscillator circuit, was leaky. A replacement, along with a new line output stage feed resistor, restored normal operation and an excellent picture. B.S. Mains Fuse Problem Sets that produce the no results symptom intermittently certainly add to my grey hairs. This Panasonic TC1485 (Z4 chassis) was no exception. After an hour on the soak test bench it would splutter, go off and on then die. I hooked a meter to the main 100V line and awaited developments. After a few minutes the voltage started to vary all over the place then the set shut down. The obvious thing to do was to replace the power regulator chip IC801. But, much to my disgust, this made no difference: after a suitable interval the set coughed and died again. While casting murderous glances at various ceramic capacitors I tried checking the voltages around IC801. All that happened was that the set sprang to life! It later transpired that no voltages at all were present in the fault condition. Why? Because the I3A mains fuse was intermittent, that's why! The set was entirely blameless. B.S. Matsui 1436 For the first ten minutes after switch on this set displayed a bright white raster. The contrast then slowly increased until a nice picture was present. Use of freezer soon took me to the culprint, the TA8691N multi -function chip. A replacement restored normal operation. T.L. Toshiba 140E46 Good sound and a good picture were present when this set was switched on. After a few seconds however the picture disappeared. I had a quick tap around (the blunt end of a screwdriver, wisely wielded, produces amazing results) and the picture reappeared. A check on the print side of the panel then revealed a nice dry -joint at pin 2 of the line output transformer. After this and a few more connections that looked dodgy had been resoldered the set worked perfectly. T.L. Matsui 1422 If there's no display and no tuning with one of these portables It's worth checking D403 on the front panel and the associated circuitry. T.L. Matsui 1466 Intermittent failure to switch on was the problem with this set. I decided to replace the STR50103 chip in the power supply and the 330k0 start-up resistor. After that it wouldn't switch on at all. As checks on the rest of the components in this area failed to reveal anything amiss I refitted the original power supply chip. The set then worked normally at every switch on. Next time I do it the simple way. T.L. Matsui 209 There was a nasty i.f.-type buzz. I tend to be wary of these 20in. sets and look first for dry -joints. Sure enough a visual check in the i.f. area showed that filter CF101 had never been soldered in. Once this had bee put right the sound was as clear as a bell. T.L. A squeaking noise came from the line output transformer and the h.t. was low at about 40V. As the power supply worked correctly when the line output stage was disconnected and a dummy load was substituted we decided to carry out some checks in the line output stage. For want of something better to do we changed the transformer. This made no difference at all. We drew a blank with various other components, then hit on the idea of disconnecting the scan coils. This produced the line scan collapse symptom. It couldn't be the scan coils, could it? It was, and the c.r.t. had to be replaced as well - they come as an assembly. R.N. Philips 2A Chassis This set came in with a short-circuit chopper transistor. The usual repair job put that right but there was a standby problem. When the set was cold it would go into the standby mode but the LED flickered. When the set was warm it would still go into standby but wouldn't come out: the power supply would buzz loudly and the LED's flicker rate was faster. We eventually found that R3689 (390) was open -circuit. It's in series with D6689 in the chopper transistor's drive circuit. Both components were replaced, though the diode measured o.k. on test. R.N. Granada C2ODZ4 (Salora L Chassis) There was no sound or vision, just a blank raster. Replacing the TDA4505 signal processor chip cured that, but we then found that the set couldn't be programmed. BBC -1 and Channel 4 could be stored in memory, but we couldn't store ITV and BBC -2. They could be tuned in manually, but no amount of button pressing would store them or the personal TELEVISION MAY 1994 499

preferences. As I've not dealt with many of these sets and thought that I might be doing something wrong, I sought the advice of an expert. After replacing the MDA2062 memory chip all channels and preferences could be stored. My thanks to Nick Beer for his help with this one. R.N. Philips G110 Chassis This set had been fitted with the recommended power supply kit and worked well - unless you put it in standby. You would then, after two to three seconds, be rewarded with a pop and a short-circuit BUT18AF chopper transistor. There was obviously a drive problem in the standby mode, but how would one check this? We switched to normal operation and carried out some scope checks in the power supply. These showed that the BUT18AF's base drive waveform was incorrect - the switch -on delay was missing. Replacing D6612 and D6614 again cured that (they are part of the kit, so maybe we had a dud one). But the set still failed in standby. We eventually replaced D6646, D6649, Tr7655, Tr7656 and Tr7654 together. This cured the fault. There remained the problem of the bill... R.N. The culprit turned out to be the 1,500pF, 25V field scan Samsung CI537V coupling capacitor C521 which was dead short. M.Dr. We've had an interesting fault with some of these sets recently: no vision, just a blank raster, as the set is permanently taking its vision input from the AV phono input ITT CVC1175 Chassis sockets. Inject a video signal here and up comes the picture. The cause of the fault is in the tuner, where the video switching is carried out. A different tuner is supplied as a replacement. Two of its pins have to be cut off before insertion. N.B. Hitachi CPT2082 The customer said that there was an intermittent buzz over the sound. I listened to the set for several minutes in the house but didn't hear anything untoward. When I dismantled it and poked around the fault appeared. PL401 in the audio section hadn't been pushed home properly - in fact it had barely been fitted at all. I was told that the set had recently been repaired by a national company. N.B. Bang and Olufsen MX2000 (31XX Chassis) Because of the link between the line and field output circuits in these sets, intermittent field collapse is commonly caused by dry -jointed EW modulator diodes. Another cause is now becomming quite common - a dry -joint at the top end of CL12 in the EW circuit. N.B. Panasonic TX28W3 (Euro 1 Chassis) Although this is a digital TV chassis I feel that the picture it produces is inferior to that provided by its analogue predecessor, Model TX28W2 (Alpha 3 chassis). Interesting that it produces the same faults! If the set comes on with no sound or picture, returning to standby a few seconds later, 8561 (ERQ12HJIR5) is open -circuit: it's the fusible resistor in the supply to the TDA8175 field output chip IC561, which goes short-circuit. N.B. Toshiba 215T8B Intermittent line or field collapse - or both - is becoming increasingly common with these sets. The cause is dry - joints at the scan coil connector. They can be quite a problem, with arcing and print burning. N.B. Bang and Olufsen MX2000 (31XX Chassis) The symptoms were familiar: the channel number was displayed atop the front of the set but there was no sound or raster. This usually indicates that the fuse or RP14 is open - circuit because of a short-circuit in the line output stage, usually the transistor or the transformer. Not this time however. The fault was misleading: when the set was switched off h.t. was present and could be seen decaying at the collector of the line output transistor, but when it was switched on there was no h.t. at this point. All was explained by a dry -joint at one end of LL04, which is in the h.t. feed to the line output stage. N.B. Philips K35 Chassis There was no field scan. It didn't take us long to find that the 1.211 safety resistor R590 in the supply to the field output stage was open -circuit. The field output transistors tested o.k., but we replaced them nonetheless along with R590. At switch -on 8590 immediately went open -circuit. The output from the power supply was low at about 50V. When the feed to the line output stage was disconnected and a 100W bulb was connected as a dummy load it lit up and the h.t. rose to around 100V. From this you might suspect that there was a fault in the line output stage, but the actual cause of the problem was the 10pF, 350V h.t. reservoir capacitor C716 which had dried up. M.Dr. Philips System 4 Chassis There was sound but no raster. A check in this case is to connect a lk52 resistor between one of the tube's cathodes and chassis. When we did this the cause of the fault was revealed - field collapse. If you find that the 3.90 safety resistor R3168 in the feed to the field output stage has gone open -circuit, replace it along with the TDA3650 field output chip IC7110 and the 100pF, 50V field flyback boost capacitor C2017. The heat from R3107 dries out C2017, with the result that IC7110 fails. M.Dr. Panasonic TX1752 (U5 Chassis) The power supply was squealing and the h.t. was low at only 55V. When the feed to the line output stage was disconnected and a 60W bulb was connected as a dummy load the power supply worked correctly. Various items in the line output stage were checked before we condemned the transformer, which had an internal short. C.W. Huanyu 37C3 This set was dead with a blackened mains fuse. As no shorts could be detected I fitted a new fuse and powered the set via a variac. It worked fine, so I left it on soak test for a couple of hours then switched in off and on a few times. It continued to work normally. I then left it switched off for an hour. When it was switched on again from cold the fuse exploded. The cause of this fuse blowing was eventually traced to a faulty thermistor in the degaussing circuit. C.W. 500 TELEVISION MAY 1994

Tuning Satellite Receivers the Easy Way Gordon McCrea, B.Sc. With the ever increasing number of channels in use, more and more satellite TV installations are being slowed by the need to tune the receiver's presets to suit the customer's requirements. If it's necessary to rename presets and add radio channels this retuning can sometimes take as long as the rest of the installation. Even if you manage to persuade the customer that the factory presetting is the most suitable arrangement, the introduction of new channels will lead to calls for retuning - as with Astra IC and ID when this one eventually arrives. Thus a quick, easy method of updating a receiver's tuning to include all the latest frequencies would be a very useful addition to the installer's armoury. With some of the receivers now on the market the memory contents can be transferred from one to another identical one by using a fully -wired scart cable to connect the decoder scan sockets. But to take advantage of this possibility the installer would have to have available a considerable number of different receivers - and keep them all regularly updated. And this approach would rapidly become much too expensive for most installers as new models replace older ones. The more elegant solution described below is for use with one popular upmarket receiver, the Nokia SAT1700. A very simple memory unit for connection to the receiver can be built in the service department: it enables the channel setup to be stored and carried in the tool case to each installation job, where the tuning can be unloaded into the customer's receiver. If a new channel arrangement is required the memory can be reprogrammed and the process repeated. Enter the EEPROM Fig. 1 shows the circuit of the memory unit, which employs a 24C164 EEPROM (Electrically Erasable and Programmable Read Only Memory). According to the data sheet for this device, it's guaranteed for 100,000 erase/write cycles and data retention for a hundred years (no backup batteries are required). Communication -with it is via the standard two -wire I2C serial bus link. The device is readily available at a price that should enable the complete unit to be built for LIO or maybe less. The circuit can be built using a small piece of Veroboard, with a short 4 -way ribbon cable taken to a plug for connection to the receiver. The board could be enclosed in a plastic case smaller than a matchbox or, even simpler, a piece of heat -shrink sleeving could be used. The Nokia SAT1700 A 4 -pin connector that provides connections for clock (SCL - serial clock), data (SDA), 5V and chassis lines is included on the Nokia SAT1700's main PCB. Software in the receiver's microcontroller chip makes it possible to use this connector to feed data to an external EEPROM for storage - it's just a nuisance that you have to remove the top cover to gain access to the connector. The procedure is as follows. Disconnect the receiver from the mains supply, then remove the top cover - you'll need a Torx T10 screwdriver to do this. Find connector XC23, which is located towards the front at the left-hand side - it's often obscured by a ribbon cable. Plug in your memory unit (take care about the polarity) then reconnect the receiver to the mains supply. The letters `dp' should appear in the front display. If they don't, switch off immediately and double-check everything. Now press the following buttons, in the order listed, on the remote control handset store, -/--, TV -SAT. This should Connector XC23 [02891 Fig. V SDA NO CL 1 AO 41---11A1 24C164 8 VCCO- WP 3 EEPROM 330 A2 SCL 4 --GNO SOA 1: Circuit diagram of the 24C164 memory unit. change the front display to read 'out'. Congratulations! You are now copying the receiver's entire memory into your external EEPROM - you did of course make sure that you had up-to-date channel presetting. When this process has been completed the front display will read `oc'. Disconnect the mains supply before you remove the connector from XC23. If you next make a few changes to the contents of the receiver's memory you'll see how easy it is to restore the original contents. Disconnect the mains supply, reconnect the external memory unit, reconnect the mains supply then press the `p+' button under the central flap. The front display will read In'. This indicates that the memory unit is feeding its contents back into the receiver: the display will read `oc' when the operation has been completed. Want more set-ups? Build a few more units or, better still, put them all on one piece of Veroboard with a selection switch. You can connect all the clock and data pins to common clock and data lines, switching an address pin to select the required chip: say one set-up for the movie buff, another for the sports fan, one for teenagers and one for the geriatrics! Parts The 24C164 EEPROM chip is available from RS under part number 311-366. This company also stocks a connector that fits on to XC23 in the SAT1700: part number 467-611 is the shell housing and part number 467-598 the crimp terminal. TV sets use lots of these connectors, so you may find one on the junk shelf. What Next? A follow-up article will explain how the computer buffs amongst you can connect your memory unit to a PC and read/write information as required. 7 330 47k TELEVISION MAY 1994 501

Long-distance Television Roger Bunney Although there was a slight increase in reception, February was again a quiet month. Perhaps the most exciting moments reported by enthusiasts were some more sustained meteor - scatter pings and an aurora on the 6th. Two letters from down under indicate that the sporadic E season in Australia has been extremely good: we'll keep our fingers crossed for a similar season in the northern hemisphere. The rather sparse February SpE log is as follows: 6/2/94 TVE (Spain) ch. E3; DR (Denmark) E3. 8/2/94 RAI (Italy) IA. 12/2/94 TVE E2, 3. 13/2/94 Unidentified ch. E2/RI/E3 signals (late morning). 19/2/94 NRK (Norway) E2. 23/2/94 SVT (Sweden) E3. 27/2/94 TVE E2, 3. 28/2/94 TVE E2, 3. During the late afternoon aurora on the 6th Brian Williams (Penarth) received back -reflection signals from Austria, the Czech Republic and Scandinavia of the usual 'hurnmy', poor quality. A Set for DX Reception Recently a 14in., PAL system I Nokia TV receiver, Model 3724, has been on sale in the UK at prices from about 164 upwards. Fastext is included and I've bought one intending to use it for satellite TV reception via the scart connector. The receiver should however be excellent for terrestrial DX -TV reception: it has full Band I/III coverage and the 59 memory positions should make it easy to program the main Band I channels for selection via the remote control handset. There's also a scan facility with on -screen graphics. The handbook is clearly written, and a degree in computer programming shouldn't be necessary to get the beast to do what you want. Satellite Reception Developments in Bosnia have led to increased SNG activity. A new uplink appeared via Intelsat 603 (34.5 W) on the 19th, from Pale to the south east of Sarajevo at 10.970GHz (vertical), providing feeds to various European networks. Apart from the usual Sarajevo airport source at 11.142GHz (V), Pale was also noted at 11.006GHz. Eutelsat II F4 (16 E) has been used for US bound output from Bosnia. An Italian SNG truck with the identification `ITA57 AVIANO' appeared via Eutelsat II F2 (10 E) at 11.006GHz (V), just above the RAI Uno transponder: Aviano is an air force base used by planes patrolling over Bosnia. The Israeli massacre at Hebron on the 25th also fired up the satellite feeds: Jerusalem Capital Studios used the Reuters 12.521GHz transponder aboard Eutelsat H Fl (13 E). For me personally the most unusual sighting this month was `UKI-312 Lundy' via Eutelsat II F4 at 11523GHz - camera shots of the island and VTR material. Alan Smith has equipped himself for C and Ku band reception in Thailand. He missed the opening ceremony for the Thaicom 1 satellite on the 1st but saw weak test transmissions on the 2nd. Alan has been campaigning to get Star TV to provide stereo sound with its transmissions. He's received a new C -band satellite at between 125-128 E carrying an Indian channel, Sun TV, in Tamil. The source could have been Statsionar-15 at 128 E. Further to the west, Intelsat 505 (66 E) has been busy carrying the Winter Olympics from Lillehammer. John Locker has been busy with the Jason educational project at the Liverpool Maritime Museum. Maxat has provided a 2.4m dish and PanAmSat (owner of the PAS -1 satellite) has been very helpful with material and information. The PAS -1 satellite at 45 W is being used to provide a link from South America to Europe with compressed video. Ian Waller (Lincoln) reports that Eutelsat I F4 (25.5 E) has been carrying CNNI via its east spot beam at 11.092GHz, thought to be for a Turkish cable system. Ian has also seen the Sky coverage of the West Indies cricket tour via Intelsat (50 W) at 4.18GHz. Geoff Stocks (Plymouth) has been enjoying Italian football via Eutelsat H F3 (16 E) at 11.163GHz (H) on Sundays from 1230-1600GMT. He's using a 1.2m offset dish with a Connexions 8220 receiver and would be delighted to hear from other West Country enthusiasts. You can phone him on 0752 668 015 - he has several Continental sound carrier conversion boards for sale. Bandula Gunasekera reports that u.h.f. transmissions from the Russian Ekran satellite are being enthusiastically received in Sri Lanka - the Orbita-1 (Secam) service at 714MHz and Indian Asianet (PAL) service at 754MHz. In response to local enquiries a simple but effective receiver has been designed (see Fig. 1): he tells us that it really works, giving excellent results. An ELC1043 or ELC2004 u.h.f. tuner is used (others would do), followed by two transistors that provide voltage gain and then an NE564 amplifier/demodulator chip. The MINTER SJPICS NNW EDITOR RIC 0 OMB Feeds from the Lillehammer Winter Olympic games received by John Locker at the Wirral. Left via Telecom 28 at 5 W, centre via Kopernikus at 28.5 E and right via PAS -1 at 45 W. 502 TELEVISION MAY 1994

output from this chip, at pin 14, is fed to a video emitter - follower stage and a sound amplifier/demodulator circuit - the video and audio outputs can be fed to a monitor, a VCR or an r.f. modulator. Bandula uses a fifteen -turn helical aerial with this receiver. Alternatively crossed Yagis (mounted at 90 to each other) with 14 or more director elements could be used, phased for circular polarisation. News Items UK: Successful digital audio broadcasting (DAB) tests in Bands III and IV have been carried out by the BBC in London at fixed locations and with moving vehicles. The DTI has confirmed that DAB will operate within the band 217.5-230MHz and it's possible that services could start as early as mid -1995. To encourage listeners to adopt the new technology there will be some simulcasting of Band II f.m. transmissions in DAB form in Band III. As a TV spectrum Band III seems to be doomed in the UK. A review of mobile radio (PMR) in Band III is to be undertaken with a view to increasing the number frequencies in use: there are to be three extra regional licences. The Netherlands: DAB is also being tested in the Netherlands, using ch. E7 (189.25MHz). A 1kW transmitter at Haarlem and a 40W transmitter at Hilversum are being used. Tests are soon to be extended to Rotterdam. Polarisation is vertical. ZH-TV (Zuid-Holland TV) is now in operation on ch. E49, using a 10kW e.r.p. transmitter at Rotterdam. Polarisation is horizontal. Germany: PRO 7 has been awarded a terrestrial service licence for the Schleswig-Holstein region. Israel: Plans for a Palestinian TV station have been delayed as a result of a dispute between the Jordanian and the Israeli governments over the location of the studio. Bangladesh: A second TV service is to be opened later this year in Dhaka. It will be primarily educational. Ireland: There have been discussions between RTE and the UK authorities over the possible extension of RTE -1 and -2 coverage, also the new Telefis na Gaeilge service, to Northern Ireland. Des Walsh (Co. Cork) reports that there is considerable hostility to the use of high-powered MMDS NEW PRODUCTS Kantai TVR51K 211 Multi -system Colour TV Aerial Techniques brings you two new products to complement our already extensive range. -personal Preference" memory function - (Volume, Colour. Brightness, Contrast and Hue) 5 -System PAL -BIG, PAL-DK, PAL - 1, SECAM B/G, SECAM DX and NTSC 3.58/4.43 Infrared Remote Control 90 P-eset Channels Automatic Tuning On Screen Display - Volume, Colour, Brightness, Contrast, Hue and Channel EURO-AV (SCART) Socket Sound Muting Function Presettable Off Timer (15-120 Minutes) Automatic Power Off Function - when no broadcasting signal is recieved within 10 minutes le Full VHF/UHF Coverage Cade Tuner Single or Opal Digital Control 269.00 COMING SHORTLY Exclusive to Aerial Techniques, new enthusiasts manually tuned ()Xing satellite receiver. Features variable video bandwidth II - 26MHz via front control for extreme weak signal work. SAE for detsils. Grandly GY48961 Multi -system video recording and playback In PALIMESECAM, SECAM L (tor FRANCE), NTSC 3.58/4.43 MHz I> Tuner reception: BIG, 1, D/K, K1, M, 48 channels can be memorised. t> NICAM HiFi. > 6 Heads. C- On Screen Display. C- On Screen user menu guide in 3 languages. C. High Speed Drive Mechanism, approximately 2 mm. to rewind E180 tape. C- On screen programming, timer can be programmed for 8 events in 31 days. > Infra -red remote control for operation of all major VCR functions plus selected TV functions (TV functions may not operate all Grundig N models) C. Auto Head Cleaner Digital Auto Tracking Long Play Operation 8 hour recording time with 4 hour tape. Super long play in NTSC mode, 6 hours recording with T120 2 hour tape. O. One Touch Recording (OTR) in 30 minute steps up to a maximum of 4 hours 1> Automatic Program Finder (VISS) index search system searches up to 20 recordings forwards or reverse. Li. Assemble editing > Daily/Weekly recording mode D Multifunction display > Connections: Rear 2 Euroscan sockets Front Phono AV sockets I> Dimensions: 43.5x8.9x30cm - - I> Mains Voltage 90V to 240V AC 629.00 (All prices are inclusive of Val, Carriage a Insurance delivery 9.00 on large items). Full range of sate lilac equipment supplied. Our CATALOGUE at 1 samples some but not all that we can supply, send for your copy today. UK & overseas despatch normally ex stock within 24 hours, well accept the usual credit cards, cash, cheques, POs -as convenient. Ring daytime with your query or 1st, on our 24 hr 'phone or send In your fax and we'll get back to you shortly. I I Kent Road, Parkstone, Poole, Dorset B1112 2EH Tel: 0202 738232 Fax: 0202 716951 transmitters in southern Ireland, on health grounds. Some run at 1kW. Czech Republic: TV Nova is now in operation, using the former CT2 network and PAL colour. CT2 now uses the CT3/OK3 network which will be supplemented later this year with transmitters at Brno (ch. R46, 200kW), Chomutov (R35, 50kW), Hradec Kralove (R57, 200kW), Jesenik (R50, 200kW), Jihlava (R42, 100kW), Plzen (R48, 200kW) and Trutnov (R40 200kW). Transmitter powers e.r.p. 10 12V 220 220 12V 12k 820 5k6,rrin W1815 15 C F1 C F2-11-1 120 22 1 2 3 9 10 6 10 9 UHF input UHF tuner L1.01 2SC 388 2SC388 Sik NE5 64 14 14 TBA120AS 8 0.1 Audio output 13 33V 11 13 12 4 5 2 1, 3,4..rrys 4 k 7 Set AGC 01 5k Tuning '21 10k 10k 2 SC1815 2k7 470 Video output 022 1.022 T 50k Set vol. 01 D291 Fig. 1: Simple circuit for reception of the u.h.f transmissions from the Ekran satellite. CF1/2 are 6.5MHz ceramic filters. TC1 is a miniature 2-20pF trimmer. The three coils consist of six 2.5mm diameter turns of 40 s.w.g. wire. TELEVISION MAY 1994 503

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3300. 83.9) [4.50 [2.00 f1.50 3140 [4,11 ',[-0000i 1.331 60,111,123,1 09: [E11-2W150 183 ACRE LANE, NORTHAMPTON NN2 8DX Tel./Fax: 0604 841871 - Mail Order ONLY - No Callers BELT KITS /4,-2 A range of belt kits in stock front 60p to 2.40 Makes for most models available including: Alba. LINE OUTPUT Akai, Amstrad. Ferguson/JVC, Fisher, Funai, TRANSFORMERS GEC, Goldstar, Granada, Grundig, Hinan, Hitachi, Mitsubishi, NEC, Orion, Panasonic, Philips, LOPT Hitachi 2174,76,78 Saisho, Samsung, Sanyo, Schneider, Sharp. LOPT Hitachi CPT1476 19 Sony. Tensai. etc - Please state model and make. LOPT Hitachi CPT2276 etc,,,,, 19 LOPT Matsui 1440..._._,,,,,,,,, E111 VIDEO MOTORS LOPT Matsui 1450 E22. A range of Reel Motors made by Ferguson, Dacca 100 Hitachi. Sanyo, Sharp & Panasonic are available, ITT CVC25/30/32 E9 0 please state model and make. We stock capston motors, makes include Ferguson/JVC, Hitachi and Sharp. ITT Compact 80 Series 110. ITT Compact 80 Series 90 ITT CVC1204 16 19 11 ITT CVC1300/1/3 21 Also available are Ferguson Mode Control 17T CVC1100 16 Motors, please state make, model. ITT CVC11501175 Mode Motor Assembly 3V35-49 at 12.50 Reda range of Panasoole LOOTS now available. Please ask for more Malls C20 BACK-UP BATTERIES Philips 1.2V Back up Battery 1.75 Philips 2.4V Back up Battery 2.80 Ferguson TX10 2.00 Ferguson TX10 1.2 2.10.50 Ferguson TX10 2.4.,,,,,,, 3.58.00 5.5V Back Up Cap 1.85.00.00 TV ON/OFF SWITCHES oo.50 ITT, Philips, Dacca, Thorn. Fidelity. Grundog, Sony 50 and Hitachi. State model for price..75.75.50 50.50 SONY PUSH.00 SWITCH 80p Limiter Post Assembly 1.75 Makes & Models: Hiner' VXL4,, Sharp Reel Motor Pulley only 1.20 Replacement of plastic pulley on a (--, Maw ITT transformers available number of Sharp Reel Motors with the above metal pulley gives better 1' Fidelity all models up to 20" ZX3000 15 yg MatSul VX730,735,735A,755, rewind/ff performance. Fidelity Panel for ZX2000 El.00 770 800A 810 820 880 990 Salsho VR1100,1260,1200H0. Fidelity 221'2X3000 [18.60 REMOTE CONTROLS 1600 3500.3000,3700 H man CT4/ 5 & TVA1 C17 50 "25003200 "33003300 X ' Bush. Ferguson, Grundig, ITT. Philips, Pye, Sony, Philips KT3,,,,,, C12.95 Hitachi, Matsui. Logik, Panasonic, Saisho. Sabra, Thom 7X100 Green Spot 110 C14.50 OTHER SPARES Samsung, Tashiko, Tatung, Toshiba. Various Ferguson 7X90 LOPT specify size screen 17.75 Universal Video Copying Kit models TV & Video From 10.00 Sony - Please state model for price Universal Copying Kit (Scull MANY HITACHI TV REMOTE CONTROLS Universal Camcorder Kit VIDEO HEADS CASSETTE HOUSING Cass. Carriage 3V35 025.50 Cass. Carriage 3V42 25.50 Cass. Carnage 3V58, 59, FV11 C21.00 Cass Carnage HAD 500,30, 700, FV10. 12 22.50 Cass. Carriage HIT. VI' 11 01 5.00 Cass. Carriage HIT. VT 64 19.50 Cass. Carriage Philips VR6462 19.35 Cass. Carriage Philips VF18.1382 11.00 Akai Carr. Kit 10.25 MANY OTHER VIDEO AND TV SPARES IN STOCK Back Tension Bends in Stock for Akai, Fisher, Hitachi, Fergusow JVC, Mitsubishi, Panasonic, Sanyo and Sharp. IDLER ASSEMBLY FERGUSON, FISHER, HITACHI PHILIPS, PANA- SONIC. SANYO, SHARP, AKAI, SAMSUNG. MIT- SUBISHI. NEC. In Stock. Pnce on Application Wide Range Available L18205 SCART SWITCHING UNIT. At the push of a button it is now possible to link your AV & audio systems together via the commonly used Scart sockets. No C5.20 9.00 more unplugging, just a simple push - 0.50 button operation allowing recording & 0.60 playback of up to five different 03.95 appliances 14.50 NOW IN STOCK. deo Cassette Lamps from CRT Anode Caps STATE MODEL FOR PRICE. AMSTRAD, FERGUSON, HITACHI. Video Tape Splicing Kit Onefor an Mk 3, 4,e, From 79.50 PANASONIC, SANYO, SHARP, FISHER, HINARI, Hipachi TV Frame Module HM6251 8.00 2800 ALBA. MITSUBISHI, ORION. SAISHO, Toptel Unlvarsat R/C achi TV Frame Module HM6232 (10.50 22.50 SAMSUNG, TOSHIBA. State Model No. Price Canettle Loading Roller Assembly Fox front 7.50 3V23,3V31,3V32 450 SATTELITE SPARES TRIPLERS Degaussing Positor Blue 4.00 Universal Triplet C620 Degaussing Positor White 1.30 SATT DISHES, LNBs, PINCH ROLLERS Degaussing Positor Hitachi Universal Tripler with focus unit C9.50 OA CABLES, SATT FINDER KITS, Dacca 120/130 senes tripler 0.50 A range of Pinch Rollers is in stock, most of them Degaussing Positor Philips Thorn TX10 Focus Unit Kit TMs e. 2.80. Makes include Akai, Amstrad. Ferguson, End Sensor for Hitachi VT63,64,65 (Pair) g:71( INSTALLATION KITS, etc month only SPECIAL OFFER 5.00 Fisher, Funai, GEC, Goldstar. Grundig, Hinan, Cassette LED Sensor for Panasonic etc 1.60 NOW IN STOCK. Circuit Protectors 0.60 Grundig Tnps POA Hitachi, ITT, JVC, Marantz, MitsubsN, NEC, Nord- c'cie ar Service Cassette mg) 0.9 DB at E39.50 mantle, Orion, Panasonic, Philips, Samsung, V1deo Idlers Spring Kit 7.50 Special Offer 1.210E1 29.00 MAINTENANCE KITS Sanyo, Schneider, Sharp. Sony, Tensai, Video Washer & E Clip Kit moo Dual LNB both outputs H/V C52.00 Available for Albs, Amstrad, Ferguson, Fisher, Thomson. Toshiba etc. Please state model and Unmensal Video head Puller From 7.90 63cm Dish 819.75 Goldstar, Goodmans, Granada, Hinar, Hitachi, make. Ak ai VS22 Series Power Board 20.00 80cm Dish 39.50 JVC, Matsui, Mitsubishi. Nikkei, Panasonic, Phi- Philips Pinch Roller for models VR6180, 6185, Soldaring Iron 25W 9.50 100cm Dish E119.00 lips, Saisho, Sabre, Schneider. Sentra. Sharp, 6285, 6362. 6367, 6467, 6468, 6470, 6561. 6670, Multimeter From E11.50 Other items in stock P.O.A. Sony, Tashiko, Toshiba. 6760, 6761, 6870 6.00 Panasonic G Deck Technical Guide Video 14.50 35cm Sat. Dish comp with wall mount brkt 19.95 Prices subject to change without notice. Please add 1.25 per order for p&p and then add 17.5% VAT. POSTAGE VARIES ON HEAVY ITEMS. SEND A4 SAE FOR LIST INTEGRATED CIRCUITS BA4236 11.50 L7915 BA4402 11.00 11918 BA4402 [2 75 1.7924 811103 [1.60 BA5112 [2 45 LA1180 AN1140 02.50 1345204 [2.75 LAI185 81314011 1.34 3514 101201 0112531 [1.00 005402 0140 541235 8038216 [150 605406.. 3250 541260 895015 9150 606104... 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[0.07 111400 001 190644 [150 41111M3 ASK FOR SEMICONDUCTORS NOT LISTED. PRICES SUBJECT TO CHANGE. SEND FOR PRICE LIST CHANGE OF ADDRESS EFFECTIVE FROM 21st MARCH 1994 TELEVISION MAY 1994 0100(.5 840 n10158715 O " A E L E C T R C S 505

SUPER SATELLITE S SATMASTER PRO for Windows PC software A 10 Table 4 furn.r., I 3E14444. 1D41100 KINGDOM. Tebler Y1elbie &ANON*.116ltiLl Airs 10 Nett Merle YJ (Nee Attirespitertc *Seesaw, te tesuenet melte. Hato Cdflilliir Zones eau Zonev 111 IL 111 trial Disk Es + post Graph: Circular Aperture Seam Pea.rn Graph : Circular Aperture Beam Pattern 1 5 4111n 4 r1 -lone _.12e9 siri4sterpro -This latest version is unbelievably brilliant!" I El 2 3 4 5 6 7 8 Inclined Orbit Satellite TRACKING GUIDEBOOK /Full details of inclined orbit satellites. /How to receive inclined orbit satellites. /Describes many tracking devices. /Includes five year Projection levels. Postage: - UK: 2.50 Europe: 5 Rest of World: 15 The Satellite Book A Complete Guide to Satellite TV Theory and Practice vacknowledged by leading reviewers as the best work of its kind. /All practical and theoretical aspects of satellite thoroughly explained. eg. how to set up a motorised dish in less than 5 mins! /Includes comprehensive details of new digital TV systems. ibsinefined TRAcoNc, orbit 84tellite GUIDEBOOK' /Design your own satellite system. /Calculates all set-up angles for all satellites, from any location. /0n -line help for all options. /Work with several link budgets simultaneously! /Displays footprints, maps and graphs /As easy to use as Windows! Annular Displacement Nesseee) i.iti~insmesks, /1000's of town/country data files. /20,000 word technical help line. Postage:- UK: 1 Europe: 2 Rest of World: 4 Satmaster Pro for DOS 69. WI CALL for upgrade prices. requires MS-DOS 3.0 or higher, Windows 3.1, 4MB memory, 3MB hard disk, 3 5" drive. Postage:- UK: 2.50 Europe: 5 Rest of World: 15 Send SWIFT stamped, addressed envelope for complete list of satellite books, videos and software TELEVISION PUBLICATIONS 17 Pittsfield, Cricklade, Wilts, SN6 6AN, England Tel 44 (0)793 750620 Fax 44(0)793 752399 TELEUI51011 Subscribe to the magazine 'that experienced electronics professionals never miss Whatever your interest in the world of television electronics, there's a wealth of news, advice and hard information for you in TELEVISION. TELEVISION offers you a definitive guide to today's TV electronics business, keeping you up-to-date with new developments in TV, video and satellite - whilst furnishing you with 'hands-on' advice and information on the latest equipment. SUBSCRIBING IS SIMPLE Complete the coupon and return it to us at TELEVISION, Reed Business Publishing, FREEPOST, 9th Floor, Quadrant House, The Quadrant, SUTTON. Surrey CM2 5BR Please send me TELEUI51011 One Year at a cost of 26 Two Years at a cost of 49 SAVE 3 Three Years at a cost of 70 SAVE 8 Name Title Company Address Postcode Telephone Number Servicing solutions TV fault finding New Products VCR clinic Satellite TV Equipment reviews 4 WAYS TO PAY Readers' letters CD players casebook Components News and comment And much more! I I enclose a cheque for f made payable to Reed Business Publishing Ltd 2 Please charge my:.11 Access ' Visa - Diners Club American Express Expiry Date [ ii i_j 1Eri Ej EJ 3 Please invoice me/my company Order No. 4 Or alternatively just ring our credit card hot-line on 0622 721666 and quote reference 1J2 Are you registered for VAT, Yes' No E If yes, please supply your registration Number Please send a VAT receipt Reed Business Publishing company Registered in England (registered number 1515:37) VAT no: 2:3572:3565 Signature Date Prices apply to UK, Isle of Man, and Channel Islands only. 1J2

Slovakia: TV Sever (Zilina) is in operation on ch. R52 at 1kW, with PAL colour. Russia: There are plans to change to a single national public TV service plus three national commercial services. Sri Lanka: ETV -1 (BBC WSTV) ch. E33 and ETV -2 (Prime Sports) ch. E56 are now in operation at Kandy. Coverage is to be extended later this year. Rupavahini Sri Lanka (ch. E5) is to reopen two relays in the north, at Kokavil and Palali. Satellite TV The Marco Polo -1 satellite has been renamed Sirius after being sold to the Swedish Space Corporation. It has been moved to 5.2 E, next to Tele-X. The following transponders are in operation: 4 (11.785GHz), 8 (11.862GHz), 12 (11.983GHz), 16 (12.015GHz) and 20 (12.092GHz), all with right-hand circular polarisation and, to date, clear PAL. Because of the tight beamwidth centred on Scandinavia the signal levels in the UK are weak. Loss of the Ariane V63 rocket was apparently caused by damage to an immersed bearing in the third stage engine because of insufficient cooling of a liquid oxygen pump. Rectifying this defect will delay planned launches. Eutelsat II F6 may now be launched prior to Astra ID, which may have to wait until Christmas or early 1995. Music Choice Europe is now on air with CD quality digital audio free from advertising. It's uplinked from the USA via Intelsat K for cable distribution in Europe. All 56 music programmes are compressed for transmission. r TELEVISION INDEX & DIRECTORY and REPRINTS SERVICE The UN has leased additional Intelsat links for communications with troops in trouble areas. Much use is being made of 22 portable stations operating in the Ku band via the Intelsat craft at 63 E. France has been testing Nicam via the Telecom 2B TFI and TMC channels. A 5.58MHz subcarrier is used, with the f.m. mono audio moved from 5.8MHz/J17 to 6-6MHz/50psec. RTL via Telecom is likely to use Smartcrypt, a cut and rotate system. The subscriber requires two cards, one with the control access code and the other with the algorithm. Decoders are expected to cost the equivalent of about 100, including a three-year free access period to the channel. Knife-edge Refraction Last month we mentioned propagation of distant signals via refraction at the top of high ground/mountains that otherwise provide screening. This has been experienced in the Rocky Mountains, with propagation over hundreds of miles. George Gaskin writes from Gibraltar to suggest that shortrange refraction can produce similar effects. The Gibraltar fire brigade installed a 70-80MHz repeater at the top of the Rock. At the northern end of the Rock there's a sheer 1,300ft drop, which should have meant that contact with mobiles below would be impossible. In fact it was found that contact, though not one hundred per cent, was possible in many places. The repeater now operates in the 150MHz band, with similar results. I recall that during the mid-fifties/early Sixties signal refraction at Ventnor, Isle of Wight, via the 750ft St. Boniface Down resulted in aerials being sited in the oddest of places. Version 2 of the computerised index to TELEVISION magazine, covering volumes 38 to 43 (1988-1993), is now available. There are over 5,000 references to TV/VCR fault reports and articles, with synopses. A TV/VCR spares guide, an advertisers list and a directory of trade and professional organisations are included. The software is easy to use and very quick. It runs on any IBM or compatible PC with 512K RAM and a hard disc. Price: 30 (specify 5.25" or 3.5"format) Those with version 1 discs can have them upgraded for 12 each: return the disc quoting its serial number. Reprints of articles from TELEVISION back to 1986 are also available: ordering information is provided with the index, or can be obtained from the address below. Hard copy indexes of TELEVISION are available for volumes 38 to 43 at 3.50 each. Please allow up to 28 days for delivery. All the above prices include UK postage and VAT where applicable. Add an extra Ll postage for overseas EC orders, or 5 for non -EC overseas orders. Cheques should be made payable to Video Interface Products. Video Interface Products Ltd., 1 Vineries Close, Cheltenham GL53 ONU, UK. 1 TELEVISION MAY 1994 507

The Versatile LM317T Gordon Haigh The adjustable -output, three -terminal LM317T positive voltage regulator has been available for a good many years now. You find it advertised for as little as 50p plus VAT. Since it can get you out of some tricky situations it's worth keeping some in stock. For repair work we usually have in stock the standard positive 5V and 12V regulators, and maybe also the 15V and 18V versions: but could you lay your hands on an 8V or 10V regulator if you needed one? Keep some LM317Ts on the shelf and you won't have to worry. We'll also mention one or two other uses for the device in this article. Features and Basic Application Motorola and National Semiconductor have been the principal producers of the LM317T chip, which features internal current limiting, thermal shutdown and safe -area compensation - these make it difficult to blow the device. The LM317T (10220 case) superseded the earlier steelpack LM117 version. Some other common versions are as follows: the LM317K is a 1.5A type in a TO3 case, while the LM317MT and LM317MP are 0.5A plastic types. There's also a version that provides a negative output voltage, type LM337T. But the following notes apply to the LM317T. Fig. 1 shows the basic circuit for providing any output voltage between 1.2V and 37V. The input voltage range is from 4V to 40V and the regulator can handle up to 1.5A. RI is nearly always the value shown, 2400, though many users bend the rules a bit and make it 2200, a value that's more Fig. 1 (left): Basic regulation circuit. Fig. 2 (right): Pin connections. 10293) Connected to pin 2 1 2 3 widely stocked. You can of course use two 1200 resistors connected in series. The output is set by R2, which can be a small preset or a fixed resistor - the required value can be determined by using a temporary preset and a dummy load. If a value of 1k0 provides the required fixed output voltage, use of a 2.2k0 preset would be appropriate so that the wiper can be set at a nearly central position. As the value of R2 is increased, the output voltage rises. When an LM317T is used for replacement purposes the electrolytic capacitor on the input side can be an existing capacitor, e.g. a mains bridge rectifier's reservoir capacitor or a reservoir capacitor on the secondary side of a chopper circuit. The 0.1p F capacitor is required only where the regulator is an appreciable distance from the input electrolytic capacitor. The 1NF output electrolytic capacitor can also be an existing component. Its presence improves the transient 508 response rather than the stability. This capacitor also improves the output impedance. Pin connections are shown in Fig. 2, some electrical characteristics in Table 1. Use as a Motor Regulator Some motors in audio cassette players have a regulator chip in series, taking its input from an unregulated supply. An LM317T can be pressed into service if the original device has failed. To obtain the correct motor speed an Table 1: Electrical characteristics at 25 C Output voltage 1.2-37V Output current (max.) 1.5A Input voltage range 4-40V Maximum dissipation 15W Typical load regulation 0.1% Ripple rejection 65dB Typical line regulation 0.01% Current via pin 1, typical 50pA unusual voltage may be used, while the type code on the original device may be meaningless. No problem with a LM317T! Retain the interference suppression capacitors. With some motors the regulator chip is in the steel motor case instead of being separate. Motor faults such as bearing or winding troubles etc. can turn the chip into a low resistance or a piece of wire. The motor then runs fast or erratically. An LM317T should never be added externally to mask this condition. The LM317T can be used in a similar manner as a lowvoltage d.c. audio turntable motor regulator. A strobe pattern, if present, can be used with R2 to set the speed correctly. Two switched presets are required in position R2 for 33/45 r.p.m. operation. Bench Uses As an inspection lamp (also as a dummy load) a 60W mains bulb on a wooden base has disadvantages. If you point it into a VCR the infra -red radiation it gives off confuses the sensors. The VCR may then shuttle about! In addition the lamp flicker at close range does you no good over a period of time. It's far better to use a c.r.t. heater transformer winding with full -wave rectification and smoothing followed by an LM317T to supply a pocket torch. With its reflector, the ID2941 1.5A bridge 1.0%, D2 1N4001 Fig. 3: Adjustable 1.5A power supply. Regulated output TELEVISION MAY 1994

Output from bride rect. R911 120, 8W Z0901 36V, 6W 800mA Fig. 4: Use of the LM317T in the Hitachi NP84CQ chassis (Models CPT1444, CPT1644 etc.). In some sets a single 6252, 15W resistor is used in positions R911/2. torch is much more directional. For this application R2 would need to be around 60052 to supply a 4.5V flashlamp. Older variable bench power supplies like the Amtron kits used a discrete series regulator transistor such as a 2N3055 plus many other components. Although mine has been quite reliable, because of wear and tear a fair number of replacement BC107s have had to be fitted. Anyone starting afresh might care to consider using an LM317T as the basis of a variable bench supply. Fig. 3 shows a circuit devised by Marshall's. The LM317T should be mounted on a heatsink. DI and D2 are incorporated to provide protection when the output is connected to an inductive load. High -voltage Use A customer of mine lost part of his metal watch (one of the metal bars, where the strap fastens) inside an Hitachi CPT1646R television receiver (NP84CQ chassis). In addition to blown fuses the BU806 series regulator transistor was short-circuit, zener diode ZD901 was also short-circuit and the LM317T regulator chip IC901 appeared to have been damaged (a comparison was made with a new one). On obtaining the circuit diagram I was surprised to find that although 40V is quoted as being its maximum input voltage the LM317T is used in the regulated 100V supply. Fig. 4 shows the circuit. The trick here is to arrange that the voltage across the LM317T is only about 20V. An industrial quality zener diode (ZD901) connected in parallel with the LM317T prevents the voltage across it exceeding 36V. The LM317T is used as a second regulator - the following Answer to Test Case 377 - see page 477 - Sherlock got there in the end - with a little help from his friend. The lack of height was obviously caused by insufficient current in the field scan coils. The drive to these comes from pin 2 of the ppc1378h field output chip IC552. As usual the scan current path includes a coupling capacitor, C527 in this case, and a low -value sampling resistor, R567. This 1.8Q, 1W resistor has a series -connected resistor and thermistor combination across it to provide compensation for temperature changes. Indeed the thermistor was doing its job correctly, keeping the display virtually constant while Sherlock thermally cycled the timebase board. The sampling resistor serves two purposes: the waveform generated across it provides negative feedback for field 100y description is based on that given in the Hitachi manual. The mains bridge rectifier produces about 130V across C904. Q902, a Darlington power device, and its associated components form a preregulator. With a high mains input voltage, most of the current flows via R911/2, IC901 then being the main regulator. As the mains input voltage falls, R911/2 are progressively bypassed by Q902 until, at 220V a.c. (the lower limit of operation), they pass little current. The output from the preregulator varies from approximately 111V with a low mains input voltage to approximately 120V with a high input - these figures apply with normal beam currents. IC901 provides a regulated 100V output, set by VR901. ZD901 provides protection under certain fault conditions. Incidentally, after repairing the power supply in the faulty set I found that the programme buttons didn't respond correctly. The set needed reprogramming (see page 732, Television August 1991). Ni-Cad Battery Charger Ni-Cad batteries are best charged from a constant -current source. The LM317T can be used for this purpose, as shown Mains input via fuse 1N4001 Ni-Cad battery Fig. 5: Simple Ni-Cad battery charger circuit. Rate (ma) Specification for R 10 1200, 0.5W 25 4752, 0.5W 50 2752, 0.5W 100 1252, 0.5W 200 6.211, 0.5W 250 4.752, 0.5W 375 130, 2W in Fig. 5. Up to seven 1 2V cells can be charged at rates up to 375mA, up to ten cells at lower current rates. Charge rates can be calculated from I = 1.25/R(0). [D2961 linearity correction while, in conjunction with the coupling capacitor C527, a parabolic waveform is produced for the EW pincushion correction circuit. What had happened was that the value of R567 had increased somewhat. This had detracted from the scan -coil current not only directly, by increasing the resistance in series with the coils, but also indirectly via the feedback circuit. Since the increased -value resistor produced a larger sample waveform, the feedback circuit was being given the false impression that the scan current was too great. In addition to R567, which has to be exactly the right type obtained from Sony or one of its agents, the electrolytic capacitors in this area - C521, C527 and C537 - were replaced, if only because the set is several years old and our test meter wasn't sure about them. The result of all this was an excellently -proportioned picture and a delighted Mr. Smith. TELEVISION MAY 1994 509

What a Life! Donald Bullock When I started in this trade there were no transistors. There were wireless sets, electric gramophones with pickups that weighed a ton, and radiograms - a wireless set and a gramophone in one huge box. There were a few television sets as well of course. They were full of valves, had tiny screens and also weighed a ton. And they received just one programme, BBC, 'cos that's all there was. I had no idea at that time what I was letting myself in for. These thoughts came to me the other day when I heard Steven happily accepting a CD player for repair. It's sometimes hard to appreciate how the trade has managed to cope with the dozens of complex developments and the ever-increasing multiplicity of domestic electronics equipment. The Hitachi DA58 The CD player, an Hitachi DA58, would read a disc only once in about ten attempts. I was trying to read a B & 0 circuit diagram and claimed to have a headache (that would figure!) and to be too busy to even think about it. So Steven took down the manual and went about it with no apparent concern. He found some dry -joints around a clutch of transistors - Q007, Q008, Q011 and Q012. When he'd resoldered these the player worked correctly. An Amstrad STV20 He next applied himself to an Amstrad STV20, which is a 20in. TV set with a built-in satellite receiver and decoder. The job card said 'intermittent blue screen'. In this model the satellite receiver/decoder is vertically mounted at the right-hand side (viewed from the back), with the cable connections and the card insert slot at the back. The main panel and power circuitry are on separate panels on the floor of the cabinet, in plastic slots. Steven soon found that the tube's voltages varied when the signal panel was pressed and lifted. The power and signals panels have to be pulled out together, then separated for service attention. In this particular set the PCB slots were very rough, so much so that the print at the extreme edges of the panels had worn shiny through ordinary cabinet movement. It's quite a new model. Working without a circuit diagram, Steven concentrated on the circuit connector that links the signals panel to the tube's base panel. He found that a 170V voltage at pin 2 disappeared when the fault was present. Steven could find no hairline cracks but noticed that the rear, right-hand corner of the panel showed signs of running hot. Resoldering the components in this area - C75, C86, R85 and D15 - cured the intermittency. "Didn't like that Amstrad" he said as he boxed it up. "You can do the next one." An Old Bush While he was lifting the set down, quiet Norman Glutton glided in with an old Bush TV set - one fitted with the T22A chassis. I saw that it was one which had been 510 adapted for remote control operation, and prayed that I wouldn't have to take out the mass of ironwork and circuitry behind the front cabinet controls. Norman works at the local pub, mainly because he gets all the unsold pies and pasties and something to wash them down with. I've never seen him without a pie. "You seem to be coming here a lot recently Norman" I said, "you must have a television set and a VCR in every room!" The Bush set displayed three obvious symptoms. What there was of the raster was green, it had collapsed into a bright horizontal line, and there was no digital display. Were there three separate faults, or one that caused all these symptoms? Surely there had to be a single fault. I made for the 12V line, which is derived from the line output stage and is stabilised by an LM7812 regulator, IC701. It feeds the field generator and the signals circuitry, the LM7812 being mounted on a large heatsink at the rear, right-hand side of the chassis, close to the edge. It had originally been dry -jointed, probably because of stress due to its position. But the solder had melted and shorted the 12V line to chassis. As a result the 251, 2W fusible resistor R422 had given up. The resultant voltage loss was the cause of the various symptoms. As Norman doesn't have much income, I felt kindly towards him when he returned. "Here it is Norman" I said, "good as new - but no better I'm afraid. Fifteen quid to you!" "Oh good" he mumbled through a piece of pork pie. "I'll charge old Woody thirty quid. He'd reckoned on having to pay about forty." A Ferguson 14M2 Meanwhile Steven was working on a Ferguson 14M2 (TX89 chassis) whose display symbols flashed and constantly changed. Most of the time the display was nonsense, but when it did make sense and settled on a local channel a good picture came up. Then the set would switch itself to standby. Steven stood their poleaxed. "What's up with this one then?" "God knows" I replied, "but remember - adopt a logical approach." Then I slunk out to make the tea. A big murder enquiry was going on in our area at the time. Umpteen bodies had been found and more were being sought. I stayed in the house awhile to see all about it on the box, which I normally never watch. Then I took Steven's cold tea out to the workshop. He'd got the set working and was also watching the murder enquiry. "What was it?" I asked, pointing to the Ferguson. "Someone seems to have done in a lot of women" he answered. "No - the fault on the Ferguson" I said. "Oh, that. A carbonised on -off switch. I've wired one in temporarily and have ordered the right one from HRS." "Yeah" I said, "I suppose it had to be that." "No. It could have been caused by IC13 and IC14: as they're data linked, you have to replace them both. Another possibility could have been e.h.t. arcing, particularly under the e.h.t. cap." "You've been on to Ferguson!" I exclaimed. "Wouldn't speak to me" he said. "Then where did you get all that?" "Worked it all out and tried the most likely thing first. You did say to be logical!" I'm still puzzled about how much he's picked up in such a short time. The bits I know took me a lifetime to absorb. TELEVISION MAY 1994

Letters POSSIBILITIES The report on the Las Vagas CES was interesting. But it seems that the gismo manufacturers are overlooking one point: how many different formats can one fit into the average home? Here's something that might be more worthwhile. Computer programs that claim to be able to provide good translation between French and English, English and German etc. have been advertised recently. By using the teletext subtitles for the hard of hearing it's possible to get a foreign language into ASCII form quite easily. A computer could then do the translation so that foreign subtitles could be replaced with English ones and vice versa. Unfortunately not many broadcasters use teletext, let alone subtitling, but the possibility is there. The software packages are not expensive. If the technology was incorporated into a TV set one could truly claim to have a multistandard receiver! D. Benyon, Bude, Cornwall. LEADS IN CASSETTE PLAYERS A while ago a reader wrote in complaining about the leads used in cassette players to connect the heads to the electronics. The lead used to connect the heads in most floppy disc drives makes a good replacement. It's generally a four - core screened cable about 20cm long, which should do for most players. Drives are easy to obtain as scrap units from local computer repair depots - they are generally free as non -workers. A source for longer leads is the old 8in. drives, but these are very difficult to find. S. Beukes, Durban, South Africa. TECHNICAL BACK-UP Two letters in the April issue refer to the subject of technical back-up (or lack of it). There are several reasons why manufacturers that decide not to provide technical advice to independent workshops are not doing themselves any favours. First, during an average week I'm asked three or four times for advice on which make of TV set or VCR to buy. I base my reply not only on reliability and price but also on the help I'm likely to get should I have to do any servicing. This must be quite an influential factor taken nationwide. Secondly there's customer frustration when an intermittent fault takes weeks to rectify, though quick reference to a manufacturer's fault information may be all that's required. The setmaker may say "take the equipment to one of our service centres for repair". But for various reasons including distance, cost and convenience the customer may not wish to do this. Next there's the possibility that some engineers may declare a product to be beyond economic repair, or provide a high quotation, simply because of lack of manufacturer support. This doesn't generate brand loyalty. Last year I contacted all the major manufacturers prior to launching the monthly Fault -Fact -Files system (advertised in Television), inviting them to contribute for the benefit of all engineers. Some adopted a very positive attitude, but two in particular decided against participation, giving as reasons the need for specilised training and the investment in equipment their agents are expected to undertake. My thoughts however are that if one engineer has spent several hours diagnosing the cause of a fault, or if a component was initially underrated and has since been up -graded, why can't we all be told about it? If fault information is readily available, engineers won't have to phone manufacturers' service departments so often, taking up their engineers' valuable time. Media such as Television and Fault -Fact -Files can disseminate this information. Paul S. Smith, Vision -On, Newtownabbey. PROGRAMME DELIVERY CONTROL In dealing with programme delivery control in his Modern TV Receiver Techniques article in the March issue Eugene Trundle refers to the MV1820 chip from GEC Plessey Semiconductors. His description of its function was not quite accurate however. The chip doesn't compare the data on the incoming label with the preset recording instructions. Comparison is carried out by the software within the VCR. This also turns the VCR on and off to make the recordings. The MV1820's function is to extract packet 8/30 format 2 from the teletext data stream. This contains the programme information and the timing data. The MV1820 converts this into a format that the VCR can recognise, storing it in the output registers where the VCR's software constantly checks it for a match with the preset recording instructions. GEC Plessey Semiconductors also has the MV1821 VPS/VDC chip that automatically checks which system is being broadcast. Use of this dual -standard device means that VCR manufacturers don't have to produce two separate designs to cover the European market. Jim Wallace, Teletext Products Marketing Manager, GEC Plessey Semiconductors, Cheney Manor, Swindon, Wilts SN2 2QW. FEEDBACK FROM SAMSUNG In the March TV Fault Finding column Michael Dranfield mentions a no teletext sync fault with the Samsung Model CI -5013T. He says that he has devised a simple modification which is not recognised by Samsung. I write to confirm that there has been no reference to such a fault in our warranty labour claims or returned goods since this model was first launched. In fact the only reference to it we have is in a letter to me from Michael Dranfield dated 2nd December 1992. I have to make it clear that, since the modification has not been approved by our Technical Division, Samsung cannot accept any liability when it has been carried out following Michael Dranfield's instructions. A.C. Coton, Commercial Operations Manager, Samsung Electronics (UK) Ltd., Euro Service Centre, Stafford Park 12, Telford, Shropshire. ELECTRONICS AT SCHOOL I am 16 and intend, after leaving school, to go to technical college to do the City & Guilds 224 course. My purpose in writing is to comment on a recent letter about young people's interest in electronics. I think that the number of those interested is underestimated. What puts many young people off is the way in which electronics is presented at TELEVISION MAY 1994 511

school. We either use a breadboard or a preassembled board, simply connecting a wire to form different gates. There would be greater interest if we could make our own PCBs and deal with circuits that would be of use to us (a radio, timer etc., not just a gate). The emphasis at school is on digital circuits: the national curriculum doesn't seem to appreciate that analogue circuits are just as interesting as digital ones. It is not the school's fault for failing to make electronics interesting. It's the government's failure to provide the cash required. Tony llewelyn Jones, Bangor, Gwynedd. SERIES REGULATORS In reply to K.J. Treeby, the type of series regulator circuit shown and described in Modern TV Receiver Techniques (Part 13 January) was selected simply because it's so widely used. The emitter -fed system does in practice have certain advantages over a collector -fed system. The error sensing system that can be used, with the reference zener diode connected directly to the output, improves the loop gain and the ripple reduction performance - the zener diode's low Help Wanted The aim of the Help Wanted column is to assist readers who require a part, circuit etc. that's not generally available. Requests are published at the discretion of the editor. Send them to the editorial department - do not write to or phone the advertisement department about this feature. Wanted: U4 (Z86E21) for the Grundig GIRD2000 satellite receiver; capstan PCB for the Hitachi VTF70; IC503 (BU2735AS) for the Akai VS23EK. P. Lowe, 5 Lingfield Green, Darlington, Co. Durham DL1 1DD. Wanted: Service manuals for: JVC timer/tuner TU20E; JVC U-matic CR6060ET VCR; Panasonic AG6200 VCR; Funai/Technicolor 212E VCR. T. Martini, 6 Levant House, Mile End Road, London El 4RB. 071 790 6807. Wanted: Stand-alone teletext decoder. Mike Barnett, 15 Iris Avenue, Birstall, Leicester LE4 4HP. 0533 671 076. Wanted: Manual or circuit diagram for the Ferguson 3V37 2 3/4in. colour monitor. J. Farrer, 37 Priory Grove, Ditton, Maidstone, Kent ME20 6BB. 0622 716 294. Wanted: Circuit diagram (photocopy would do) for the Toshiba Model IK-1900PFD camera. S. Beukes, PO Box 5963, Durban, South Africa, 4000. Wanted: Operating or service instructions for the Sky Scan K1 satellite receiver. Could photostat and return. I have several multistandard receivers for disposal for nominal impedance at ripple frequencies feeds any ripple directly to the error sensing point (Tr2's emitter). Furthermore, because the series regulator transistor is operated as a common -emitter stage the value of R1 can be much lower: thus the voltage across it will be much less before regulation is lost - this is an advantage where the input is from a 12V battery. Eugene Trundle, St. Leonards on Sea, East Sussex. STEVE REPLIES Ooops! At least Ray Porter isn't asleep. In may article on auto grey -scale faults (March) Q4 is in fact a voltage -reference source. In answer to Michael Dranfield, who referred to no playback colour in LP cue and review (letters April), what can one expect for 210? A special 'jump circuit' is required to compensate for the massive colour errors in LP picture search. Most low-cost VCRs are low cost because the manufacturers have saved by not incorporating correction circuits. Fair enough? Steve Beeching, Barnby in the Willows, Notts. sums. G.D. Stocks, 62 Ridge Park Avenue, Mutley, Plymouth, Devon PL4 6QA. 0752 668 015. Wanted: Operating panel for the Philips receiver/audio amplifier Model 70FR260 - or a scrap machine. Jim Littler, 363 Atherton Road, Hindley Green, Wigan, Lancs WN2 3XD. 0942 58 794. Wanted: Good home for a Sony Profeel monitor/component TV system. G. Baskerville, 33 Chapel Street, Warminster, Wilts BA12 8BZ. 0985 216 488. Wanted: Circuit diagram for the Telequipment S51 scope, also any spares, PCBs and drum motors for the Philips VR6462 and Ferguson 3V54 VCRs. E.J. Edwards, 43 Hoose Court, Market Street, Hoylake, Wirral L47 5AB. Wanted: Circuit diagram or technical information for the Panasonic TX1450 and TX1424 monitors. S. Lemon, 186a Farnborough Road, Farnborough, Hants GU14 7JL. 0252 546 398. Wanted: Signal panel (part no. 503-372D) for the GoldStar GHV1246I VCR and a 16DB22 6in. colour tube for the Saisho CTR6. Peter J. Lane, Frost Industrial Estate, Bidewell Close, Drayton, Norwich NR8 6AP. 0603 867 264. Wanted: Two pec1817 transistors for the Telequipment D1011 scope. John Hibbs, PO Box 816, Amanzimtoti, 4125, Natal, S. Africa. Wanted: Manual for the Philips VR6470, also replacement drum. Manual and YM2201K chip for the Mitsubishi DP107 CD player. Ian Ruddock, 294 Willow Field Tower, Harlow, Essex CM18 6SD. Published on the third Wednesday of each month by Reed Business Publishing Ltd., Quadrant House, The Quadrant, Sutton, Surrey SM2 5AS. Filmsetting by Marlin Graphics, 2-4 Powerscroft Road, Sidcup, Kent DA14 5DT. Printed in England by BPCC Magazines Division, Carlisle Web Offset, Cumbria. Distributed by IPC Marketforce, King's Reach Tower, Stamford Street, London SE1 9LS (071 261 50001. Sole Agents for Australia and New Zealand, Gordon and Gotch (Asia ) Ltd.; South Africa, Central News Agency Ltd. Television is sold subject to the following conditions, namely that it shall not, without the written consent of the Publishers first having been given, be lent, resold, hired out or otherwise disposed by way of Trade at more than the recommended selling price shown on the cover, excluding Eire where the selling price is subject to currency exchange fluctuations and VAT, and that it shall not be lent, resold, hired or otherwise disposed of in a mutilated condition or in any unauthorised cover by way of Trade or affixed to or as part of any publication or advertising, literary or pictorial matter whatsoever. 512 TELEVISION MAY 1994

VIEWDATA RETURNSE6 made by Tandata, indudes 1200.75 modem. k/bd, RGB and comp otp, printer port No PSU.E6 MAG6P7 IBM PC CASE AND PSU Ideal base for building your own PC. Ex equipment but OK. 14.00 each REF: MAG14P2 SOLAR POWER LAB SPECIAL You get TWO 6'x6' 6v 130mA solar cells. 4 LED's, wire, buzzer, switch plus 1 relay or motor. Superb value kit just 5.99 REF: MAG6P8 SOLID STATE RELAYS Will switch 25A mains. Input 3.5-26v DC 57x43x21mm with terminal screws E3.99 REF MAG4P 10 300DPI M DTP MONITOR Brand new, TTUECL inputs, 15' landscape. 1200x 1664 pixel complete with circuit Oleg to help you interface with your projects. JUST 24.99. REF MAG25P 1 ULTRAMINI BUG M IC 6mmx3.5mm made by AKG,.5-12v electret condenser. Cost 12 ea, Our?fourfor 9.99 REF MAG10P2 RGB/CGA/EGA/TTL COLOUR MONITORS 17 in good condition. Back anodised metal case. 99 each REF MAG99P1 GX4000 GAMES MACHINES returns so ok for spares or repair 9 each (no games). REF MAG9P1 C64 COMPUTERS Returns, so ok for spares etc E9 ref MAG9P2 FUSELAGE LIGHTS 3 foot by 4' panel 1/8' thick with 3 panels that glow green when a voltage is applied. Good for night lights,front panels, signs,disco etc. 50-100v per strip. 25 ref MAG25P2 ANSWER PHONES Returns with 2 faults, we give you the bits for 1 fault, you have to find the other yourself. BT Response 200s E18 ea REF MAG18P1, BT Resoonse400'sE25 ea REF MAG25P3 Suitable power supply 5 REF MAG5P 12 SWITCHED MODE PSU ex equip, 60w +5v 05A, -5v@.5A, +12ve2A,-12ve.5A 120/220v cased 245x88x55mm IECinput socket 6.99 REF MAG7P1 PLUG IN PSU 9V 200mA DC 2.99 each REF MAG3P9 PLUG IN ACORN PSU 19v AC 14w, E2.99 REF MAG3P 10 POWER SUPPLY fully cased with mains and rip leads 17v DC 900mA output Bargain pnce 5.99 ref MAG6P9 ACORN ARCH IA EDES PSU +5v @ 4.4A. on/off sw uncased, selectable mains input, 145x100x45mm 7 REF MAG7P2 GEIGER COUNTER KIT Low cost professional twin tube. complete with PCB and components. 29 REF MAG29P1 SINCLAIR C613' wheels complete with tube, tyre and cyde style bearing 6 ea REF MAG6P 10 AA N ICA D PACK encapsulated pack of 8 AA nicad batteries (tagged) ex equip, 55x3262mm. 3 a pack REF MAG3P11 13.8V 1.9A psu cased with leads. Just 999 REF MAG10P3 360K 6.26 brand new half height floppy drives IBMcompalible industry standard. Just 6.99 REF MAG7P3 PPC MODEM CARDS. These are high spec plug in cards made for the Amstrad laptop computers. 2400 baud dial up urit complete with leads. Clearance price is 5 REF: MAG5P1 INFRA RED REMOTE CONTROLLERS Originally made for hi spec satellite equipment but perfect for all sorts of remote control projects. Our clearance price is just E2 REF: MAG2 TOWERS INTERNATIONAL TRANSISTOR GUIDE. A very useful book for finding equivalent transistors, readouts, specs etc. 20 REF: MAG20P1 SINCLAIR C6 MOTORS We have a few left without gearboxes. These are 12v DC 3.300 rpm 6'x4', 1/4" OP shaft. 25 REF: MAG25 UNIVERSAL SPEED CONTROLLER KIT Designed by us for the above motor but suitable for any 12v motor up to 30A. Complete with PCB etc. A heat sink may be required. 17.00 REF: MAG17 VIDEO SENDER UN IT. Transmitsboth audioand video signals from either a video camera, video recorder, TV or Computer etc to any standard TVsetin a 100' rangel(tunetvtoa spare channel) 12v DC op. Price is E15 REF: MA015 12v psu is 5 extra REF: MAG5P2 FM CORDLESS MICROPHONE Small hand held unit with a 500' rangel 2 transmit power levels. Reqs PP3 9v battery. Tuneable to any FM receiver. Price is 15 REF: MAG15P1 LOW COST WALKIE TALKIES Pair of battery operated units with a range of about 200'. Ideal for garden use ores an educational toy. Price is 8 a pair REF: MAG BPI 2 x PP3 req'd. *MINATU RE RADIO TRANSCEIVERS A pair of walkie talkies with a range of up to 2 kilometres in open country. Units measure 22x52x1J5ninr. Complete with cases a nd earpieces. 2xPP3 req'd. 30.00 pair REF: MAGI. COMPOSITE VIDEO KIT. Converts composite video Into separate H sync, V sync, and video. 12v DC. 8.00 REF: MAG8P2. L03600 PRINTER ASSEMBLIES Made by Amstrad they are entire mechanical printer assemblies including printhead, stepper motors etc etc In fact everything bar the case and electronics, ago)] stripped 5 REF: MAG5P3 or 2 for 8 REF: MAG8P3 SPEAKERWIRE Brown 2 core 100 fool hank E2 REF: MAG2P1 LED PACK of 100 standard red 5m leds 5 REF MAG5P4 JUG KETTLE ELEMENT good general purpose heating element (about 2kw) ideal for heating projects. 2 for E3 REF: MAG3 UNIVERSAL PC POWER SUPPLY complete with flyleads, switch, fan etc. Two types available 150w at 15 REF:MAG15P2 (23x23x23mm) and 200w at E20 REF MAG20P3 (23x23x23mm) *FBI TRANSMITTER housed in a standard working 13Aadaptern the bug runs directly off the mains so lastsforeverl why paye700? or price is 26 REF: MAG26 Transmits to any FM radio. FM BUG KIT New design with PCB embedded cod for extra stability. Works to any FM ratio. 9v battery req'd. 5 REF: MAG5P5 FM BUG BUILT AND TESTED superior design to Icit. Supplied to detective agencies. 9v battery req'd. 14 REF: MAG14 TALKING COINBOX STRIPPER originally made to retail at 79 each, these units are designed to convert and ordinary phone into a payp hone. The units have the locks missing and sometimes broken hinges. However they can be adapted for their original use or used for something else?? Price is just 3 REF: MAG3P1 100 WATT MOS FET PAIR Same spec as 2SK343 and 26.1413 (8A,140v,100w) 1 N channel, 1P channel, 3 a pair REF: MAG3P2 VELCRO 1 metre length of each side 20mm wide (quick way of fixing for temporary jobs etc) 2 REF: MAG2P3 MAGNETIC AGITATORS Consisting of a cased mains motor with lead. The motor has two magnets fixed to a rotor that spin round inside. There are also 2 plastic covered magnets supplied. Made for remotely sti fri ng liquids! you may have a use? 3eachREF:MAG3P3 100MHZ DUAL TRACE OSCILLOSCOPES JUST 259 RING FOR DETAILS MASSIVE WAREHOUSE CLEARANCE FANTASTIC 20.00 REDUCTION REFURBISHED PC BASE UNITS COMPLETE WITH KEYBOARD FROM ONLY 29.00 AMSTRAD 1512 BASE UNITS GUARANTEED PERFECT WORKING ORDER. A LOW COST INTRODUCTION TO THE HOME COMPUTER MARKET. AMSTRAD 1512SD 1512 BASE UNIT, 5.25" FLOPPY DRIVE AND KEYBOARD. ALL YOU NEED 2 A MONITOR AND POWER SUPPLY. WAS 49.00 NOW ONLY 29.00 REF: MAG29 AMSTRAD 1512DD 1512 BASE UNIT AND KEYBOARD AND TWO 5.25" 360K DRIVES. ALL YOU NEED IS A MONITOR AND POWER SJPPLY WAS E59.00 NOW ONLY 39.00 REF: MAG39 SOLAR POWER PAWS 3FT X 1FT 10WATT GLASS PANELS 14.5v/700mA NOW AVAILABLE BY MAIL ORDER 33.95 (PU. sane SPECIAL P ACKAGING areas) TOP QUALITY AMORPHOUS SILICON CELLS HAVE ALMOST A TIMELESS LIFESP AN WITH AN INFINITE NUMBER OF POSSIBLE APPLICATIONS, SOME OF WHICH MAY BE CAR BATTERY CHARGING, FOR USE ON BOATS OR CARAVANS. OR ANY- WHERE A PORTABLE 12V SUPPLY IS REQUIRED. REF: MAG34 FREE SOFTWARE! Brand now, UNUSED top quality Famous brand licensed software dqcs. Available in 5.25' DSDD or 5.25" HD only. You buy the disk and it comes with free BRAND NEW UNUSED SOFTWARE. We are actually selling you the floppy disc for your own 'MEGA CHEAP" storage facilities if you happen To get software that you want/need/like as well you get a 'MEGA BARGAIN' tool DSDD PKT10 2.99 RIP: MAG31.7 PKT100 516.00 REF: MAG16 WE BUY SURPLUS STOCKLLE TURN YOUR SURPLUS STOCK INTO CASH. IMMEDIATE SETTLEMENT. WE WILL ALSO QUOTE FOR COMPLETE FACTORY CLEARANCE 1994 CATALOGUE. PLEASE SEND 45P, A4 SIZED SAE FOR YOUR FREE COPY. MINIMUM GOODS ORDER 500 TRADE ORDERS FROM OCIVERNMENT, SCHOOLS, UNIVEREMES, &LOCAL AUTHORMES WELCOME ALL 0001,3 SUPPLIED SUBJECT TO OUR CONDMONS OF SALE AND UNIESS OTHERWISE SCAT GUARANTEED FOR 30 DAYS RIGHTS RESERVED TO CHANGE PRICES & SIIVDICATIOt. WITHOUT PRIOR NOTICE ORDERS susmcr TO STOCK QUOTATIONS WILLINGLY GIVEN FOR QUANTI- TIES HIGHER THAN THOSE STATED 'SOME OF OUR PRODUCTS MAY BE UNLICENSABLE IN THE UK BULL ELECTRICAL 250 PORTLAND ROAD HOVE SUSSEX BN3 5QT MAIL ORDER TERMS: CASH PO OR CHEQUE WITH ORDER PLUS 3.00 POST PLUS VAT. PLEASE ALLOW 7.10 DAYS FOR DELIVERY TELEPHONE ORDERS WELCOME - - TEL: 0273 203500 FAX: 0273 323077 WM TOP QUALITY SPEAKERS Made for HI Fl televisions these are 10 watt 4R Jap made 4' round with large shielded magnets. Good quality general purpose speaker. 2 each REF: MAG2P4 or 4 for 6 REF: MAG8P2 TWEETERS 2' diameter good quality tweeter 1408 (ok with above speaker) 2 for E2 REF: MAG2P5 or 4 for E3 REF: MAG3P4 AT KEYBOARDS Made by Apricot these quality keyboards need just a small modification to run on any AT, they w ork perfectly but you will have to put up with 1 or 2 foreign keycaps! Price 6 REF: MAGRP3 XT KEYBOARDS Mixed types, some returns, some good, some foreigr etc but all good for spares! Price is 2 each REF:MAG2P8 or 4 for 6 REF: MAG8P4 PC CASES Again mixed types so you take a chance next one off the pile E12 REF:MAG12 or two the same for 20 REF: MAG20P4 COMMODORE MICRODRNE SYSTEM mini storage device for C64's 4 times faster than disc drives, 10 times faster than tapes. Complete unit just 12 REF:MAG12P1 SCHOOL STRIPPERS We have quite a few of the above units which are 'returns' as they are quite comprehensive units they could be used for other projects etc. Let us know how many you need at just 501) a unit (minimum 10). HEADPHONES 16P These are ex Virgin Mantic You can have 8 pain. for E2 REF: MAG2PS PROX ITV SENSORS These are small PCB's with what look like a source and sensor LE D on one end and lots of components on the rest of the PCB. Complete with fly leads. Pack of 5 3 REF: MAG: 3P5 or 20 for E8 REF: MAG8P4 SNOOPERS EAR? Original made to dip over the earpiece of telephone to amplify the sound -it also works quite well on the cable runnirg along the wall! Price is 5 REF: MAG5P7 DOS PACKS Microsoft version 3.3 or higher complete with all manes or price just E5 REF: MAG5P8 Worth it just for the very comprehensive manual! 5.25' only. DOS PACK Microsoft version 5 Original software but no manuals hence only 3 REF: MAG3P8 325' only. FOREIGN DOS 3.3-German,Frenchitalian etc 2 a pack with manual. 5.25' only. REF:MAG2P9 CTR344 COLOUR MONITOR Madeto work with the CPC464 home ccmputer. Standard RGB input so will work with other machine.. Refurbished 59.00 REF:MAG59 P IR DETECTOR Made by famous UK elan manufacturer these are hi spec, long range internal units. 12v operation. Slight marks on case and unboxed (although brand new) 8 REF: MAG8P5 WINDUP SOLAR POWERED RADIO AM/FM radio complete with hand charger and solar panel! E14 REF: MAG14P1 COMMODORE 64 TAPE DRIVES Customer returns at 4 REF: MAG4P9 Fullytested and working units are E12 REF MAG12P5 COMPUTER TERMINALS complete with screen, keyboard and RS232 input/output. Ex equipment Price is E27 REF: MAG27 MAINS CABLES These are 2 core standard black 2 metre mains cable: fitted with a 13A plug on one end, cable the other. Ideal for prciects, low cost manufacturing etc. Pack of 10 for 3 REF: MAG3P8 Pack of 100 20 REF: MAG20P5 S URFACE MOU NT STRIPPER Originally made as some form of high frequency amplifier (main chip is a TSA55117 1.3GHz. synthesiser) but good stripper value, an excellent way to play with surface mount components 1.00 REF: MAGI P1. MICROWAVE TIMER Electronic timer with relay output suitable to make enlarger timer etc 4 REF: MAG4P4 MOBILE CAR PHONE 6.99 Well almost! complete in car phone excluding the box of electronics normally hidden under seat. Can be made to illuminate with 12v also has built in light sensor so displeyonly illuminateswhen dark. Totally convindng! REF: MAG6P6 ALARM BEACONS Zenon strobe made to mount on an external bell box but could be used for caravans etc. 12v operation. Just connect up and it flashes regularly) E5 REF: MAG5P 11 FIRE ALARM CONTROL PANEL High quality metal cased alarm panel 350x 165x8Ornm.VVith key. Comes with electronics but no information. sale price 7.99 REF: MAGSP6 SUPER SIZE HEATSINK Superb quality aluminium heatsink 365 x 183 x 61mm, 15 fins enable high heat dissipation. No holes, sale price 5.99 REF: MAG6P 11 REMOTE CONTROL PCB These are receiver boards for garac.e door opening systems. You may have another use? 4 ea REF: MAG4P5 6"X112" AMORPHOUS SOLAR PANEL 12v 155x310mm 130mA. Bargain price just 5.99 ea REF MAG6P12. FIBRE OPTIC CABLE BUMPER PACK 10 metres for 4 99 ref MAG5P13 ideal for experimenters! 30 m fore12.99 ref MAG13P1 LOPTX Line output transformers believed to be for hi res colour monitors but useful for getting high voltages from low ones! 2 each REF: MAG2P12 bumper pack of 10 for 12 REF: MAG12P3. SHOP OPEN 9-5.30 SIX DAYS A WEEK PORTABLE RADIATION DETECTOR 49.99 A Hand held personal Gamma and X Ray detector. This unit contains two Geiger Tubes, has a 4 digl LCD display with a Piezo speaker, giving an audio visual indication. The unit detects high energy electromagnetic quanta with an energy from 30K ev to over 1.2M ev and a measuring range of 5-9999 UR/h or 10-99990 Nr/h. Supplied complete with handbook. REF: MAG50 TELEVISION MAY 1994 513

514 FUZZY PLAYBACK? EURAS SYSTEM WILL BRING IT INTO FOCUS Video technology is changing fast. New models get introduced with alarming regularity, each with the latest enhancement. So it's not surprising to find models and faults you've not encountered before. The problem is you can spend costly, unchargeable time searching for elusive faults, which is where Euras System can help. The Euras System is Europe's largest repair tips database for Video, Television and CD. With over 120,000 repair tips for 14,000 models from 270 manufacturers you are sure to find the solution quickly. And because it is frequently updated, it always covers the latest models. For a FREE demonstration diskette to run on your PC or details of Euras System in manual form, clip the coupon or phone 0272 860900. EURAS INTERNATIONAL LTD EURAS HOUSE, 51 BRISTOL ROAD, KEYNSHAM, BRISTOL, BS18 2BA TEL FREE DEMO DISKETTE [URA TV5/94C Solutions at your fingertips PLEASE SEND ME A FREE DEMONSTRATION DISKETTE E PLEASE SEND ME DETAILS OF EURAS SYSTEM IN MANUAL FORM E NAME TITLE COMPANY ADDRESS Pc-I-Cf1HE KWIK KOOK we mend mick-owaves We are looking for agencies in selected areas to complete our highly successful network of microwave servicing outlets. In recognition of our success and strength MASSIVE DISCOUNTS are now given by the main spares suppliers ONLY TO KWIK KOOK MEMBERS, making Kwik Kook unbeatable in the vast and still increasing microwave servicing market place. A Kwik Kook agency run along side your existing servicing business is guaranteed to substantially increase your profits. A nominal 950 plus VAT to cover your start-up pack (including training) and thereafter a modest monthly payment are all that you require to enjoy all the benefits of belonging to the Kwik Kook network. WOULD YOU LIKE TO JOIN US? For an informal chat and information pack TEL / FAX: NEIL FRANKLIN 091 272 4646 INFRA RED REMOTE CHECK CARDS * * * * * * * * * * * * * * * * * * * * * * * * * * Both same price 7.66 each plus VAT Magic Mirror 4 INFRA RED DETECTOR IR 5 CREDIT CARD SIZE BULK BUYERS BARGAINS No minimum order charge No P&P! IR 6 KEY FOB NO P&P! 10 x BU 508A 11.00 10 x BU 526 9.00 A 10 x BU 508AF 12.00 25 x BYV 96D 5.00 L 10 x BU 508DF 13.00 10 x BYW 96E 8.00 L 10 x BU 508V 15.00 25 x BY 228 10.00 10 xbut 11A 12.00 25 x BY 299 5.00 P 10 x BUT 11AF 9.00 5 x ONX 62A 8.00 L 10 x BU 326A 9.00 5 x TDA 3654 8.00 U 10 xbu 407 9.00 5 x TEA 1039 7.50 S 10 xbu 426A 10.00 5 x X2402P 7.50 3 x TDA 3562A 11.10 3 x TDA 8180 15.00 3 x MDA 2062 Bush 12.00 3 x STR 54041 11.10 A 3 x MDA 2062 Clear 9.00 3 x SAA 1293A03 21.00 3 x SAA 129303 15.00 3 x STR 6020 19.00 5 x S2000AF 13.00 10 x S2000A2 12.00 Send cheque or postal order to E.C.S. Dept. P 6 NETHERSOLE STREET, POLESWORTH, TAMWORTH B78 lee No post and packing charges. Please add VAT Phone: (0827) 330392 Fax: (0827) 331041 Above also available from TVRS 30 Marsh Hill ecs Erdington, Birmingham B23 7EH. Tel: 021 377 8451 EXPORT ENQUIRIES INVITED TELEVISION MAY 1994

RENTAL FINANCE Expand your CTV and VCR rental business with no capital outlay and increase your profitability. Broughfame has the solution and their rental finance plan will provide facilities from 2,500 upwards. For further details ring or write to Bob Wickham at the address below: BROUGHFAME LIMITED 39 SOUTH STREET, TARRING WORTHING, WEST SUSSEX BN14 7LG TEL: Worthing (0903) 821020 FAX: Worthing (0903) 821194 TV RENTAL ARREARS? By fitting Alberice Teletime coin meters, you'll keep your customer - and your money! Packed full of features, Teletime will even recover past arrears for you! At the same time, its attractive design ensures your customer will find the unit acceptable in the home. Uses I coins Compatible with all modern sets Counts coins used for added security 50,000 already installed in UK by major rental companies a Albedo Alberice Meters Ltd, 38 Nuffield Road, Poole, Dorset BH I 7 7RA Telephone: (0202) 674272 PHONE FOR FULL DETAILS TODAY! SONY TUBES RE PROCESSED WITH ORIGINAL SONY GUNS HIGH TEMPERATURE RE -PROCESSING of Sony, Mullard 45AX, 30AX, In -line, PiL, Mini (22.5) Neck and FST Tubes. SPECIAL OFFER - Clearance while stocks last 3701 B22 20.00 560DYB22 38.00 3702322 38.00 A34EAC000 38.00 370KRB22 38.00 A51 EBD 10X 52.00 370LHB22 38.00 A51 JCC 30X 52.00 5106822 38.00 A51 JFC 61X 52.00 5109B22 38.00 A51 JXS 95X 52.00 510YUB22 38.00 AXM37-001 38.00 400EFB22 Sony 64.00 5203822 Sony E64.00 570H822 Sony 64.00 680DB22 Sony 85.00 680EB22 Sony 85.00 A36JAROOX01 48.00 A38EAPOOX01 48.00 A51-231 X ITT 46.00 A51-570X Mullard 46.00 A51-580X Mullard 46.00 A51.590X Mallard 46.00 A56340X Mallard 52.00 All Tubes Guaranteed 12 Months A56-70I X ITT 48.00 A66-540X Mullard 56.00 A67-701X ITT 56.00 A34JBU1 OX Sony 6 4.00 A44JFZ1OX Sony 78'00 A49JHTOOX Sony 64.00 A49JLV1OX Sony 74.00 A51EAFOOX 58.00 A51EAKOOX 58.00 A51EALOOX 58.00 A51EBDOOX 58.00 A51EBVI OX01 58.00 Please add 17 V2% VAT A51JAROOX 58.00 A51JK000X Sony 74.00 A51JUH1OX Sony 74.00 A53JBWOOX Sony 64.00 A59EAFOOX 64.00 A59EAKOOX Ph I:ps 64.00 A59JWCOOX Sony 95.00 A64JKJ10X Sony 95.00 A66EAFOOX 74.00 A66EAKOOX Philips 74.00 AXT51-001 46.00 Callers welcome. Please phone lirst D.I.Y. Television Tube Polishing Kit Contains everything you need to Polish scratches and small chips on your CRT screens All you require is an electric drill. Written instructions are provided. Guaranteed to work. Worldwide Delivery Total Price 63.00 includes P&P and VAT WELL VIEW 114-134 Midland Road. Luton, Beds, U.K. LU2 OBL. Tel/Fax: 0582 402499 Est. 1978) 1. I I I I I I I I I I I I I I I I 1=11 1111 IN oa Alberice fre. METE Yes, I would like increased income from TV, Cable and Satellite rental - please rush me details of Alberice 's TELETIME COIN I Name: Business Name: Address: Telephone: METERS Post this coupon FREE of charge to: Alberice Meters Ltd FREEPOST 38 Nuffield Road, Poole, Dorset BH 17 7RA IN= NMI =MI MINN TELEVISION MAY 1994 515 I I I I I I I I I I I I I

Brings You all this At least 150 TV & VCR faults, colour coded and collated for fast, easy access. Equivalents Guides for TV Chassis and VCR Decks. Time Saving tips - complex procedures made simpler Money Saving tips - reduce repair and spares costs Substantial Discounts when using the Vision -On Help- Desk Fa 410 "b For more information and samples send a SAE (TV1), 16 Hillview Park, Newtownabbey, BT36 81-M/ Payment by cheque/ponisa/mastercard accepted ( 30 for 1 Yr minimum) Overseas add 10pa (airmail) DO YOU KNOW? A COMPANY WHO A COMPANY WHO SATELLITE. A COMPANY WHO A COMPANY WHO MARKET. A COMPANY WHO SAME DAY BY 1ST CAN REPAIR/REALIGN ANY UHF TUNER. CAN REPAIR ALMOST ANY BOOSTER/MODULATOR BE IT VIDEO OR CAN REMANUFACTURE ALMOST ANY VHS VIDEO HEAD. CAN REMANUFACTURE ALMOST ALL POPULAR LNB'S ON THE CAN REPAIR AND TURN ROUND 90% OF GOODS RECEIVED THE POST. A COMPANY THAT CAN CONSISTENTLY CUT YOUR SERVICING COSTS PHONE OR FAX THE NUMBERS BELOW FOR YOUR FREE WALL CHARTS/PRICE LIST. WHO PHONE: MCES 061-746 8037/8 OF COURSE 15 LOSTOCK ROAD, DAVYHULME, MANCHESTER M31 1SU. FAX 061-746 8136 516 TELEVISION MAY 1994

\/ ServiceBase The Complete TVdeo Service Manager The ServiceBase Progress System Without doubt ServiceBase is the premier workshop progress system. No other available software will deliver the array of functions available in this powerful yet easy to operate professional computer program. Customer Receipts - Invoice Production - Statements - Estimates - Service Histories Parts Orders - Field Call Schedules - Minimum Stock Levels Mail Merge Letters - Progress Reports - Diary Bookings The List goes on and on yet all these features and much, much more are included within the basic module. Amazingly this powerful product is available from Only 399at single Electronic Booking Form Engineers Screen The Warranty Module ServiceBase will store all the information necessary to compile a warranty claim. The Warranty Module will recall this information, automatically producing a fully completed facsimile of 26 manufacturers Claim Forms. Graphical Analysis Invoice Production Full Stock Control Technical Fault Database Module New to the ServiceBase product array this impressive technical fault database module will turn the power of your ServiceBase administration program into a working tool for the engineer. Delivering masses of manufacturers textual and diagrammatic fault data, complete with replacement part number listings, directly to the service man's work bench. Clear and Concise Diagrams Additional Modules: Fault Database [Available Now] Warranty Module [Available Now] Rental Module [Available May94] II Retail Module [Available June 94] Maintenance Contracts [Available June 941 Full Accounts [Available July 94] ServiceBase is Supported By Leading Manufacturers Easy to Locate Fault Diagnosis Order Your Programs Today If in doubt ask any leading manufacturer or trade association for their opinion of the best software available. Purchase ServiceBase Outright or Alternatively Lease a 486 Computer Printer & ServiceBase from Under PW ServiceBase will store & retrieve customer details: Name & Addresa Date The Job Booked In Unit Type, Make & Model Fault Description Billing Details 1111 Method of Payrivnt Parts Orders Engineers Notes Workshop Repair Number Site Visit Date Contact Instructions Appointment Details ServiceBase is packed with features other programs "dream" about: Service History Report Generator Graphical Analysis Invoice Production Full Stock Control Contacts Database Electronic Mailing Wants Databs.se Enquiry Source Analysis Loan Unit Look -up Tables Deposit/Delivery Payments IRIS Code Selection Tables Field Call Diary& Schedule Automatic Parts Ordering Word Processor/Mail Merge PC CoraRoL SYSTEMS LIMITED HAMILTON HOUSE 66 PALMERSPON ROAD NORTHAMPTON NN1 SEX TEL: 0604 601677 FAx 0604 601676

HOW TO INCREASE YOUR PROFITS, IMPROVE YOURSERVICE, WITH COST EFFECTIVE TEST EQUIPMENT. HAMEG OSCILLOSCOPES B & K PRECISION CRT ANALYSER -RESTORER HAMEG are Europe's top selling DUAL TRACE OSCILLOSCOPES. Select from four superb models. All. with the exception of the HM 1005, incorporate a useful COMPONENT TESTER. Size all models 285mm x 145mm x 380mm Clear display 8cm x 10cm Mains supply 110/220.2400 AC 50/60Hz. All supplied with 2 PROBES, a COMPREHENSIVE MANUAL and a 2 YEAR WARRANTY. HM203-7 20MHz STANDARD --.4"agal*****\1 SPECIFICATION 2 Channels 'Ti Bandwidth: DC - 20MHz Sens: Ch.1, Ch.2, lmv/cm 'Timebase. 0.1s - 2Ons/cm ' Triggering: DC - 40MHz Active TV - Sync - Separator Variable hold -off Trigger LED indicator Calibrator: 1KHz Square wave Component tester Plus many features Price C362.00 63.35 V.A.T. FREE Specialist Carrier Delivery HM604 60MHz UNIVERSAL SPECIFICATIONS 2 Channels Bandwidth: DC - 60 MHz Sens: Ch.1, Ch.2, lmv/cm Timebase 2.5s - 5ns/cm Triggering: DC - 80MHz Active TV - Sync - Separator After delay trigger Sweep delay Delay line Trigger LED indicator Calibrator: 1KHz & 1MHz Sq. Wave Component tester Price C653.00 C114.28 V.A.T. FREE Specialist Carrier Delivery HM1005 100MHz UNIVERSAL.1 Price 847.00 - C148.23 V.A.T. 3 CHANNELS- UP TO 6 TRACES SPECIFICATION 3 Channels Bandwidth: DC - 100MHz Sens: Ch.1, Ch.2, Ch.3, 1mV/cnn Timebase A: 2.5s - 5ns/cm Timebase B: 0.2s - 5ns/cm Triggering DC - 130MHz After delay trigger Delay line ' Trigger LED indicator Overscan LED indicator Active TV - Sync - Separator Calibrator: 1KHz & 1MHz Sq. Wave FREE Specialist Carrier Delivery HM205-3 20MHz DIGITAL STORAGE SPECIFICATION Digital Storage Analogue real time (Same as 203-7) Bandwidth: DC - 20MHz Sens: Ch.1, Ch.2, lmv/cm Timebase Digital: 5s-1,11s/cm Triggering DC - 40MHz Active TV - Sync - Sampling Max sampling rate: 2 x 20MHz Memory: 2 x 2048 x 8 Bit Dot joiner * Printer/plotter output taw* Price C653.00 - C114.28 V.A.T. FREE Specialist Carrier Delivery BLACK STAR COLOUR PATTERN GENERATOR THE 'ORION' THREE -IN -ONE PAL VHF/UHF - PAL VIDEO COMPOSITE - R.G.B. The Orion is a compact. bench instrument offering a wide range of patterns and facilities at a truly low cost. In addition to a switchable sound carrier facility which allows use with the majority of PAL TV systems. the Orion provides highly flexible TGB outputs. ensuring compatibility with most video monitors. More than 50 pattern combinations can be selected. including those for testing static and dynamic divergence. video amplifier linearity, colour purity. general colour performance. locus etc. A separate video input to modulate camera signals, fully variable RF and video output levels facilitat. ing AGC testing: trigger output allowing easy triggering of difficult oscilloscope waveforms; external sound modulation input via DIN connector for frequency response testing of TV sound systems: adjustable wide frequency coverage of VHF and UHF TV bands. Indispensible in the manufacture. test and servicing of televisions, and computer and video monitors. FEATURES ' Colour bars. purity. greyscale. crosshatch. dots. locus, etc. ' VHF/UHF Channels. 5.5MHz. 6.0MHz. 6.5MHz Sound Carriers. ' Internal/External Sound. External Video Output. ' Trigger Output. PAL B,D.G,H.I.K. Separate R. G. B and sync 0/P's. RGB a TTL 1V. ' Green 0.3V Syncs. Composite Video Output. Variable RF/Video Output. ' Switchable Video Polarity. Mains powered 220/240V AC 50/60Hz. Size: 98 x 219 x 240mm. Price 229.00 40.08V.A.T. NEW! DEGAUSSING COIL A very effective degaussing coil, ideal for degaussing TV tubes, computer monitors, oscilloscopes etc. Mains Power: 220/240 50/60Hz. Size: 355 x 355 x 24mm. Price 46.00-8.05V.A.T. U.K. POST PAID, export enquiries welcome. Visa/Access or cheque with order. payable B. K. Electronics. Official Orders welcome from Govt. Depts., colleges, P.L.C.s etc. Large (A5) S.A.E. for technical leaflets of complete range. Credit card orders are accepted by 'phone, fax or post. Delivery normally within seven days. The number one CRT Test Instrument. Over 5000 U.K. Television engineers wouldn't be without it. All CRT's checked identically, including all in -line and one gun types Tests all three guns of colour CRT's simultaneously under actual operating conditions (model 490) Exclusive multiplex technique (model 490) Measure true dynamic beam current that actually passes through G1 aperture to screen Measures all shorts and leaks - preserving more CRT's Tests focus electrodes lead continuity finding faults that other testers miss 'Uses most powerful restoration method known with minimum danger to CRT Rejuvenated CRT's guaranteed as new for two years Obsolescence proof - perpetual set up chart updated and new adaptors developed Tests and rejuvenates VDU's and oscilloscope tubes A range of over 40 CRT base adaptors available Increase profit Pays for itself in months. Prices Model 490 Tri-dynamic three meter instrument inc. 6 common adaptors C559.00 - C97.83V.A.T. Without adaptors C496.00 C86.80V.A.T. Model 480 Single meter instrument inc. 6 common adaptors 0425.00 C74.38V.A.T. Without adaptors 0360.00 C63.00V.A.T. SADELTA SIGNAL STRENGTH METERS The Sadelta Field Strength Meters have been designed to facilitate the dish alignment of satellite TV systems and aerial alignment of VHF/UHF television and radio systems. Signal levels can be accurately measured on the TC402-D. TC90 AND TC80. allowing the evaluation of signal conditions for satisfactory operation. All models have a clear LCD direct frequency readout, coupled to a multiturn tuning control enabling precise channel identification. TC402-D VHF & UHF FEATURES Three bands: Low VHF: 45-170MHz High VHF: 170-450MHz UHF : 450-862MHz. Digital display for direct frequency readout. Built-in monitor loudspeaker AM/FM. Signal measurement from 20pV to 3V. ' Powered by eight 1.5V AA batteries. Fully portable with sturdy carrying case. Price 289.00 Price C499.80 C87.47 V.A.T. NEW! TC80 SATELLITE Aeons AIW TC-80 IN ITS STURDY CARRY CASE TC-80, USING A LCD TV AS A MONITOR C50.57 V.A.T. TC90 VHF -UHF- SAT. FEATURES Five bands: Low VHF : 45-110MHz High VHF : 110-300MHz Hyper VHF : 300-470MHz VHF : 470-862MHz Satellite : 950-1750MHz. ' Digital display for direct frequency readout. ' Signal measurement VHF/UHF 20yV to 3V. Signal measurement satellite -70dBm to -10dBm. Audible indication of satellite signal level. Built -in -monitor loudspeaker AM/FM.(not satellite). Powered by rechargable battery (complete with charger 220/240V AC). Fully portable with sturdy carry case. The TC80 incorporates three unique features: video composite output; audio output with built in loudspeaker; ramp and RF signal outputs, which enable an oscilloscope to be used as a spectrum analyzer. * 4 digit LCD freq. display * Freq. range 950 to 1750MHz * Sweep mode sweeps entire freq. band for rapid satellite location * Tone select switch for audible tone proportional to signal strength * Measurement from 40 to 100dBuV * Audio demodulation with internal loudspeaker * Video demodulation * Rear SCART connector for A/V connection * Oscilloscope/spectrum analyzer output * Sound tuning 5 to 8MHz * LNC PSU 14V or 18V * LNC current measurement * Internal rechargeable battery with charger Price 490.00 + 85.75V.A.T. UNITS l& 5 COMET WAY,SOUTHENCI-ON-SEA ESSEX SS2 STR Tel.: 0702-527572 Fax.: 0702-420243 518 TELEVISION MAY 1994

COMPONENTS For TV * Video Audio * Com a uter THIS IS JUST A SMALL SAMPLE OF STOCK We can supply spares for many nukes of equipment WRITE on your requirements. 0452 526883 IC SELECTION COMPUTER SPARES 855753 C3.88 TA7280P 499 886109 1.95 TA72B1P AMSTRAD Sery Manual CM11 342 8.51 521 Cer. Capacrtor 2200p64Ky C1.85 Power Switch CM9073 8.63 AY38912/P 774 TA7288P 03.59 Pnnter Armature BA42361 3.92 TA7324P 288 COMMODORE 845408 0290 T913400P 495 IPCW 9512) '420 IC 83728 (A3000) 34.19 BA6259N 1257 1A13410K 4.97 User Manual (CPC464) 10.95 IC 8565 VIC 18.85 CA7410E c0.29 784530 Sery Manual rcpcw9512) 14.99 1.74 IC 906114-01 PLA 8.99 CDP5818AE C724 TA7343AP C3.49 KeyboardKeyboard(C CA" 29.99 Modulator 251916-02 18.76 CNX82/1 C3.55 TBA81OP C1.16 PHILIPS Sew. Manual (C64/C64C) 1499 0014885 C0.85 TBA810S 1.62 Sery Manual BM7513 349 User Manuel641 4.99 00751505 1.85 TCA940 03.33 Sery Manual CM8833 07.82 MONITOR LEAD 05751545 1115 TDA1001B 02.86 Sery Suppl CM13130s 300 Amga to Scan l/p 8.29 H11L3 C2.88 TD91020 02.64 Most Amstrad, CBM. Philips parts available - plus selected HA1137W C3.61 TD91035T 02.59 Acorn. Alan. Sinclair & others 11612006 0609 TDA11700 4.98 11812413 C4.75 TDA1180P E3.49 TRANSISTORS HA13307 5.12 70915160 4.63 2SA1706 1 85 2SK301 01.85 filleusep 15.18 TDA1908.4 02.06 2SA2331 Cl 59 BUV48A C4.99 KIA7217AP 2.47 TDA2003 2.44 Large range of Sem.ondociors available LA3160 228 7082541 02.49 TV/MONITOR LINE OUTPUT TRANSFORMERS la3361 1.79 TDA2593 3.45 AMSTRAD, IBM, DIGITAL etc LA4480 C3.86 TDA36538 03.93 COMMODORE 1084-P/SP etc P.0 A. LA7016 02.99 7084420 2.71 PHILIPS CM8533/CM8833 etc. C24.94 187910 2.62 TDA4510 3.75 PHILIPS CM11342)62 (CM8833 MK II) 28.51 LM1203N 1099 7094603-2 295 Ferguson 7X90 14'90* 23 99 LM3909 C255 7094601 f2 49 Ferguson 7X100 20' 90 22.25 LM833 C179 TDA4950 C215 Ferguson 7X100 22726" 110 C20.91 14545141- (338 Ferguson TX 100 51crn FST E23.95 M54548L 529 MANY MORE GEC C2089H/90H/C2288 to 2291H/C2294H 23.99 MAB8461P P.O.A 011000 CPT1463/CPT11323/24/28/4446 C22.99 MABE1048H 517 FROM STOCK Heachi CP12036/46/76/713/CP12234/36/CP12246/78 2399 M1381416-12 0499 Panasonic TLFI 4567F/584F P.O A. 1g<4564N 02.45 7088140 349 Saisho/Matee (Supply No on L.0 T ) P 0.A. MP4504 6.94 TDA8170 3.47 Many other Line 0/P Transformers evadable MS646242E1 011.77 TEA5570 3.47 AUDIO SPARES MC137/P 07.32 TL431 1.85 MC14052BCP 0.78 TMP47C PO AMSTRAD MX200/CDX400 (FUNAI) CASSETTE DOOR 3.64 NE555CDP 029 11442729 014.09 B.7. FREEWAY TELEPHONE - REPLACEMENT AERIAL 3.65 02.85 UPC1277 423 PHILIPS CST427 SERVICE MANUAL 4.50 P82559 2.99 UPC1378H 2.45 PHILIPS 08458 SERVICE MANUAL 3.49 PC713V 5AA1124 388 UPC1397C 3.94 SHARP RGF278. 281.284 MAIN BELT 1.40 SED9420CAC 1566 UPD13039LC 12.39 TOSHIBA STU2/L MAINS TRANSFORMER 9.99 5704332 5.71 ZYJ3400APS 4.63 Many other specific Parts and Manuals available 573(5451 6.29 140N478G C1925 TV SPARES STK5482 6.99 27C256-200 2.98 AMSTRAD TVR2 SERVICE MANUAL e17.39 TA7226P C3 76 4116-25 C1.89 GEC/HITACHI FRAME MODULE HI16251 0929 HOME COMPUTER CHIPS PHILIPS 96009 Deg POSISTOR (Whee) 1.34 GOLDSTAR CIS4361/4441/CFT2162X/2172X CVO SWITCH 6.49 SPECIAL OFFER SAMSUNG C1537V/CX558WT On/Off SWITCH 6.05 Many other Switches. Manuals. Posrstors. etc Iron stock. 11 t ) (5.) CO25913 DMA (ST) 32.99 KEYBOARD CPU (ST) 02350 6569 VIC (C84) 1349 C999 TMS4532NL4 DRAM (Spec) C0.99 CO 89 ZX8302 C6.49 4.99 ZX8401 ULA (Spec) 5.44 489 40054 ROM ( + 2) 11 88 9.99 74LS00 TTL (OL) 0 15 0.10 74LS157 TTL (Spec) 0.30 C0.25 7405245 TTL (01) 0.39 00.35 VIDEO SPARES Large range of Video Heeds tiers. Bel Kee Pinch Rolers from stock - plus much, much more. Please contact us We also stock REMOTE CONTROLS o Many General Components. We are pleased to towbar' the Trade and End User. DO NOT ADD VAT TO THE PRICES SHOWN - BUT PLEASE ADD 1.25 P&P All items subject to availability - Prices can change without notice. ORDER BY POST OR PHONE CIWe accept payment by VISA, Access, DELTA, SWITCH, Cheque or P.O. WE HAVE THE WIDEST CHOICE OF USED OSCILLOSCOPE S IN THE COUNTRY TEKTRONIX 7000 SERIES OSCILLOSCOPES Available from (200 Plus -ins sold.spawn/' TEXTRON% 2235 Dui Trace 1001F0 Delay Sweep (.800 TEKTRONIX 475 Dual Trace 200MHZ De Sweep 050 TEKTRONIX 4658 OW Trace ILKIMHZ Sweep 500 TEKTRONIX 465 Dual Trace 1001-12 Delay Sweep 0450 TEKTRONIX 1215A Del Trace 6094Z Delay Sweep (.503 TEKTRONIX 2215 MN Trace 60112 Delay Sweep L450 TEKTRONIX 455 Dui Trace 508442 Delay Sweep 6400 FITACHI 5650F Del Trace 60MHZ Delay Sweep 6400 1MMEG (400 PFILUPS PI13217 Did T race 501-12 Delay Sweep L400 GOURD 053351 Duel Trace 3094HZ TV Mo-no, Osolicecope L375 rwaisu SSS702 Dual Trace 20MHZ -_- L225 TEKTRONIX 2450 Cite Tram 1508H2Dpeol Storage 41750 TEKTRONIX OW Trace 100MHZ Delay Sweep Anitz HP. 17718 Dual Trace 100M1-1Z Deler Sweep Atelogue Nor GOULD CS4003 Trace le-me111{z Dena Saone 1225 The seen ample n y others aseibbk PHILLIPS PM5193 Programmable syritteomer/function Genento 0.1MHZ - 501HZ EEE -4813 As new 41500 MARCONI 2018 Synnesned AM/FM Sig Go- BOKHZ - 520112 DATRON 10619-61/2 dip Autool MA:Kew with One 111/15 AC/Curare -, (1250 DATRON 1065 - SI/2 Pr Arend Mutineer. AGDOOhne with FEE NCO HEWLETT PACKARD 3490A Bench Menge. 51, 4 M ACDCAJPns e PHIUFS F112534 M.K Function IXIM 61/2 doge wet, Glad. (450 SOLARTRON 7150-6T/2 Apt DRAM vnth IEEE _ L400 MARCON Dette Fiepency Moor 24304 101Z-821HZ..6)23 MARCONI Deal Frequarcy Mar 24319 10142.)00MHZ _LISA MAIL ORDER ONLY 10: MARAPET (TVE) 1 HORNBEAM MEWS GLOUCESTER GL2 OUE MARCONI Unnenal Counter Tater 2437 DC.101X1HZ....(175 MARCONI Uneenei Counter Tenor 2438 DC.520MHZ..._. (225 BLACK STAR Jupeor 500 Seneekrn 0.111Z- (70 FEEDBACK FG6005ine/Sqqn 0.01 HZ-!MHZ. (AO THANDAR TG101 RN_ Gen 0.021-2 - 20010-12 SiTeSqlTrni TTL -100 MULTIMETERS Pbeetteld. M2355-32 ranges AC/DC I= SOLARTROWSCHLUMBERGER 1250 Frequency Respeea E. 8690E15..1sec Oat with 86974 Plug -P. 265-406 IZ RACAL/DANA RF Power Menge 910[ (400 RACAL/DANA 9341 Detebrelge Autorreut L -C -71k Q 0350 WAYNE KENT 0905 Autonetx Preosionandge aosx... C100 WAYNE KERR 13424 Like LCR (125 WAYNE KERR B605 Automate Bindge. 0 I %_ 050 FARNELLPSU FARNELL PSU H6025 030V..lO6(N, 0-25 Ante Mewed (400 FARNELL...-.-.. FARNELL 8XVIO 0-30V: 10 ANN. (200 HP. 6255A 0,10V.0.1 5 Amp Twee. Mewed (130 HP. 62098 0.320V. 0.01 Alp Mowed 125 BRANDENBURG 4720 PSU (200 MARCONI TF2703 Univerel LCR Peirge. Berry born L175 AVO Valve Tester CT160 075 FARNEll LA520 RF Power Amp. I 5-520MEIZ 300nW 1175 RACAL 9100 Absorption We:meter 1M1 -g- I G1 -C NY.-._ CIO) NEW E UIPMENT HAPIEG OSCILLOSCOPE Hhi1005 1,1( T / ace 00110 HP. BMW Sem, Gererat, 201Q -1Z 1024,1/ opts 001/032, Timbre. WT 003) - LIMA HAMM OSCILLOSCOPE 141604 Disu Trace 613,11.1t H P 86200 Sweep OuilLec. 136245A 19-124GHZ irs3 H P 86200 Sweep Ocilla. with 86220A 10- I300111-12 -l=tg OSCILLOSCOPE HM203 I Due free 2011e Con. RACAL 9081 Syndsed AM FM SI Gen 15 520MHZ (362 FARNELL 95,0920M Seehened AM/FM 5e Gen 100KHZ - =DT. OSCILLOSCOPE.01205 I Ord MHz Oat 520MHZ Swap LYONS PG73N Pula On PRF - 201.11Z S mixes. 4150 mode areasable -al codlorspee ageblit 010 12 pro -Ns LYONS PG7 IN NM Can!HZ - 5MHZ..175 MACK STAR EQUIPMENT (1111 an Lg. 5) ARNELL PG101 INAse Gen 100r6e0 10MHZ (I Sr 111Z) 112.9 RACAL 9301A True RMS Millerchietter 1 OKHZ I GHZ _ CVO APOLLO 10-1001.116 Gaunter Timer Ratio/NnodTorre eeerel SPECTRUM ANALYSERS 021 APOLLO 100-100111* (As *ore with more 1.0.1)-- (325 HP 4 IT wrth 0555A & IF phe-in 10P1HZ.18GHZ. LINO HP 41 T well 85548 0 85528 500KY42-1250112. L1 3A METEOR ICOHLEDUBVCI COUNTER I OCP1Pts. 9/900 600 FREQUENCY COUNTER 600116 LI 11 L145 iiir 401 vo.b5541. 613552A SCOKHZ- I 2SOMHZ LION METEOR 1000 FREQUENCY COUNTER I Ghb. 1.4. 4IT with 8556A A 8557/1 2114Z-T0KH7 LION AJKPOR 51:0 FUNCTION GEN 0.116/SCIC1/11 L1119 LII9 HP 40T with 855 31 & 8552A I KHZ-110M1HZ.. LOW ORION COLOUR BAR GENERATOR Peen/Nebo-- 021 HP B2C with 83508 100112.1500MHZ L1588 AN other Beds Sur Equipment vetlebas HP 15132A 0 02HZ-25.SKHZ. (10110 MARCONI TT 2370 I KHZ.110P1HZ 4040 OSCLLOSCOPE PROBES Switegible /5 x 10 (P&P (3) L12 FARNELL ISOLATING TRANSFORMERS GLISCO 240V KJKUSUI AVF123 AC Voloneter Did Omni 13KHZ-5111KHZ 7(IOuV.1130Y 500VA, un.used. (50 L100 halting TratekinNr 500VA. mooed _ 1.30 LEADER LMVIBIA AC Pilerchmeter 51-2-1111-11 IOW/ - 300v L75 MARCONI TF2300B Modulation Meter AM/FM 4MHZ - 1.2GHZ LIDO DINER 2065 Distortion Factor Maw 6 4HZ-64KHZ 001% 150 PH1UJPS 1916313, Detoran Maar 4Q 333. 1002 5000112 001% 1.300 MARCONI TF13938 Aocko Power Mar Seed. 250 MARCONI 192161 Arteentor DC - IGHZ - ILO TEKTRONIX P6015 High Voltage Probe 175 SUUJVAN AC Tea Set LI50 Used Equipment Guaranteed. Manuals supplied it possible. This is a VERY SMALL SAMPLE OF STOCK. SAE or Telephone for lin. Please check availability before ordenng. CARRIAGE all units L le VAT so be added so Tosal of Goods and Carriage STEWART of READING 110 WYKEHAM ROAD, READING, BERKS RG6 I PL Telephone: 0734 268041 Fax: (0734) 351696 Callers Welcome 9am-5.30pm Mon -Fri (until 8pm Thurs) TUBES Spring Stock Clearance 14" tube to replace 37-570, 37-573, 37-554, 3701 B22 only 19 14" tube to replace almost any narrow -necked crt only 39 17" FST tube to replace 41JAR, 41 EAM only 69 20" tube 51-590 only 39 510UFB22 NEW only 59 20" tube Hitach Instaview 510VLB22 NEW only 35 25" Mullard New 59EAKOOXOI Seconds (phosphor defect), Good Value 14" tube to replace 37-590 370HFB22 3708B22 AXT37-001, 370HUB22 onl 29 16" tube to replace 42-590, AXT42-001, 4202B22 only 29 16" tube to replace 38EAC, 420FSB, 420GAB, 420GJB, 420GUB only 29 20" tube 51-580 AXT51-001 NEW only 69 21" FST tube for Tashiko, Hinari etc 51JAR21X, 51JAR65X, 51JAR96X only 45 New Mono Tubes 20" only El 0 14" only 5 12" only 5 only 49 Ring Irene or Jane with your tube number for latest price and availability EXPRESS TV The Mill, Mill Lane, RUGELEY, Staffs WS15 2JW Tel: 0889-577600 Fax: 0889-575600 TELEVISION MAY 1994 519

TV WHOLESALE TELEPRICE LIMITED THE LEADING SUPPLIER OF EX -RENTAL TELEVISION, VIDEO AND AUDIO EQUIPMENT TO THE WHOLESALE TRADE CALL US FOR LATEST PRICES AND NEAREST CONTACT ON: Tel: 0793 421141 Fax: 0793 432478 1st Floor 52/54 Cricklade Road Swindon Wiltshire SN2 6AF W.M.T.V. THE LARGEST INDEPENDENT WHOLESALERS IN WALSALL - SUPPLIERS OF HIGH QUALITY EX -RENTAL TVs AND VIDEOS TO THE TRADE AT COMPETITIVE PRICES ALSO AVAILABLE: NEW B -GRADE PRODUCTS - TVs, VIDEOS, AUDIO & MICROWAVES- ALL TESTED & BOXED Mile of Junction 10 M6. Easy Parking Facilities UNIT 3, BENTLEY LANE BUSINESS PARK BENTLEY LANE, WALSALL WS2 8TL Tel: 0922 724542. Fax: 0922 722208 Mobile: 0860 499495 (24 Hours) OPEN: MON-FRI, 9-6pm SAT 9-2pm SUNDAY BY APPOINTMENT DELIVERY SERVICE THROUGHOUT THE COUNTRY 520 VISION CARE DEAR TRADERS DO NOT BE DISAPPOINTED. WE ARE AT YOUR SERVICE FOR GOOD QUALITY BRAND NEW AND EX -RENTAL, GRADED STOCK OF CTVs, VCRs, AUDIO ETC IN THE (EX-TELEPRICE) UNIT. 40 INVINCIBLE ROAD FARNBOROUGH HAMPSHIRE GU14 7QU RING FOR PRICES TELEPHONE 0252-512161 or FAX 0252-524388 CONTACT PHIL OR MARTIN OPENING OFFER BRAND NEW PORTABLE WITH GUARANTEE 99.95 + VAT STOCK ALSO AVAILABLE DIRECT FROM SOURCE TELEVISION MAY 1994

TELEPLACE SCOTLAND TV & VIDEO WHOLESALE. Working Faulty Refurbished Stock Delivered. 8, Colquhoun Park Hillington Industrial Estate Glasgow G52 1XX 041-883 2610 C.T.V. UNIT 5, THE PHOENIX BUILDING, RUSHOCK TRADING ESTATE, DROITWICH ROAD, NEAR KIDDERMINSTER TELEPHONE: 0299-251522 0836-585829/0860-809673 (24HR) SUPPLIERS OF HIGH QUALITY EX -RENTAL TELEVISIONS AND VIDEOS LARGE STOCKS ALWAYS AVAILABLE ALL AT COMPETITIVE PRICES Also available: `B' Grade Products, Audio, Microwaves and Complete Range TEL: Fax: 0299-251543 of Televisions and Videos OPEN: MON-FRI - 9.30-5.30 0299-251522 0836-585829/0860-809673 (24HR) EXPORT ENQUIRIES WELCOME TV WHOLESALE WILTSGROVE LTD 28-29 RIVER STREET, DIGBETH BIRMINGHAM B5 5SA TEL: 021 772-2733 FAX: 021 766-6100 HIGH QUALITY EX -RENTAL THORN AND GRANADA STOCK PLUS GRADED STOCK AUDIO, TVs, VCR etc. RING IN FOR PRICES FREE DELIVERY FOR MOST AREAS OF U.K. SHARP PERSONAL CASSETTE PLAYERS/CAR RADIO'S Model Description Retail Price Our Price JC105 CASS/PLAYER 14.50 5.99 JC110 CASS/PLAYER 14.99 5.99 JCI30 CASS/PLAYER/RADIO 14.99 6.99 JC5I0 CASS/PLAYER/RADIO 29.99 11.99 RG296 CAR RADIO/CASS 49.99 19.50 RG292 CAR RADIO/CASS 49.99 16.99 - efi-nition BRAND NEW PORTABLE 14' REMOTE TV ON SCREEN DISPLAY, VHF/UHF TUNER, SPECIAL PRICE 12 MONTHS GUARANTEE etc. 99.95 * GUARANTEED LOWEST PRICE * -._._ EXPORT ENQUIRIES IV ELCOME ii I. SIM A %I IIII t 110 li 1// lit// in, I I/ Lk( I/?R/ 1(,/ ORDER YOUR FREE CATALOGUE TODAY 10 p \ot PAlZ\ ***.: G!* 6:00rele.' i [ - '34 >i,e,,"0 -,',,-E..; --, \ 4 \ 7,1-4 As\* --.. WILTSGROVE LIMITED REGISTRATION FORM COMPANY/NAME: ADDRESS: TELEPHONE: CONTACT NAME: \ VIDEO HADS, REMOTE'ES, C'S.. BELT KITS, IDLERS, PINCH ROLLERS, LOPT'S, MICROWAVE PARTS, TV + VIDEO TRIMS, CASSETTE HOUSINGS, FUSES ETC FAX: E-180 VIDEO TAPES 0.79 MIN QTY 50 TELEVISION MAY 1994 521

TV WHOLESALE GREATER MANCHESTER'S NO 1 WHOLESALER MANCHESTER AZ REF PAGE 50 2A RED BANK %V - HERE STRUGGLING FOR STOCK? WE HAVE GOT WHAT YOU NEED THORN and GRANADA PORTABLES and F.S.T's AVAILABLE NOW!! Televisions from 5, Filoading Videos from 20 Working Teletext from 35, 1,000s of TVs and Videos in stock FRESH STOCK ARRIVING DAILY RING DOMINIC NOW FOR STOCK UPDATE *Export Enquiries Welcome Open 10am - 5pm Mon -Fri UNIT 20, RED BANK ARCHES, MANCHESTER M4 4HF CHEQUE ACCESS VISA TRADE ANNOUNCEMENT ks-7-amivia Gamma (UK) Ltd have a new warehouse opened in Nottngham. Over 1,000 Televisions and Videos in stock. Refurbished, working and un-tested stock always available. Fresh deliveries every week. Specialists in export to the African Continent (export enquiries welcome) HEAD OFFICE: 1501-1503 Pershore Road, Stirchley, Birmingham B30 2JH Tel: 021-458-4093 Fax: 021-486-2980 Opening Hours: 10am to 6pm Monday to Saturday Nottingham Branch: 256 Derby Road, Stapleford, Nottingham NG9 7BG Tel: 0602 392231 Opening Hours: 10am to 5pm Monday to Friday 522 TELEVISION MAY 1994

TV WHOLESALE BRITAIN'S LARGEST INDEPENDENT PRESENTS HC Tl TV & VIDEO WHOLESALERS LTD MASSIVE PRICE REDUCTIONS - SPECIAL STOCK CLEARANCE ON MANUFACTURERS B -GRADE STOCK 21" R/C - 110 21" TEXT- 150 21" NICAM - 185 25" TEXT - 175 25" NICAM - 215 28" TEXT - 225 28" NICAM - 250 Home Computers Telephones Clock Radios Calculators CD Midi Systems Radios Still Cameras Car Radios Toasters Personal Stereos Satellites Televisions Electric Fires Personal CDs Midi Systems CD Mini Systems VCRs CD -Radio Cassettes Home Security Systems Portable Audio DON'T MISS OUT, PAY US A VISIT PRESTON 139 Oakshott Place Walton Summit Ind Est Preston (M6 Junc 29) Tel: 0772 312101 BIRMINGHAM 208 Bromford Lane Erdington Birmingham B24 8DL Tel: 021-327 3273 Fax: 021-322 2011 LONDON Unit 2 The Royal London Est 29/35 North Acton Road London NW10 Tel: 081-961 5005 TELEVISION MAY 1994 523

V Ik/ 02:14 122229 TV WHOLESALE ii11111111111111111111111111110 BESCO LIMITED T/A NORTH WEST ELECTRONICS ENTIRE RANGE OF EX -RENTAL TVs & VIDEOS NEW STOCKS EVERY DAY, WORKING OR OFF THE PILE makes Include: Sharp, Hitachi, Ferguson, Pye, NAT PAN, ITT etc. Late models always available. KNOCKOUT PRICES ON COLOUR TVs FERGUSION, PYE, HITACHI, PHILIPS, BUSH, ITT, etc. TELETEXT BARGAINS FROM 30.00 (WORKING). FERGUSON TX TELETEXT ONLY 45. PHILIPS/PYE TEXT ALWAYS AVAILABLE OVER 1000 COLOUR TV AND VIDEOS AVAILABLE RING OUR HOTLINES NOW FOR PRICES OR CALL IN, YOU WILL BE DELIGHTED IF Converger Decoder T20//22X 5 14 T26 X 5 16 Philips G11 14.50 5 12 Visa Welcome Working Ex -Equipment Panels Line scan 18 20 20 Power 17 17 20 All prices include Postage & Packing. But + VAT * IF THE PANEL YOU REQUIRE IS NOT LISTED PLEASE ASK * Prices are plus VAT and based on quantity Walker House, 16 Bottomley Street, Bradford BD5 7LJ Ring Tony 0274 308186 -Open 6 days - 9am-5pm Frame 14 X 11.50 Cheques accepted WESTERN TRADE SERVICES EST 14 YEARS SUPPLIERS OF EX -RENTAL TV & VIDEO THORN AND NON THORN SOUTH WEST 2A Barton Hill Road, Torquay, Devon TQ2 8JH Tel: 0803 312222 Fax: 0803 326767 Delivering throughout Devon and Cornwall weekly WALES Unit 6, Islwyn Workshop, Portymaester Ind Est, Risca, Gwent Tel: 0633 612667 ADVERTISERS' INDEX Aerial Techniques 503 Alban Electronics Ltd 471 Albrice Meters Ltd 515 Anglian TV Wholesale 526 A. R. International 526 A -Z Electronics 505 Besco Ltd 524 BK Electronics 518 Broughfame Ltd 515 Bull Electrical 513 Campion Wholesale TV Ltd 526 Central TV Wholesale Ltd 527 Coastal Aerial Supplies 526 Colourtrade 525 CTV (Mids) 521 CTV (N.E.) 527 Datapart Ltd 525 East London Components 466 Economic Devices...496-497 E.C.S. 514 Euras International Ltd 514 Express TV's 519 Gamma 522 GGL Components 467 Gogglebox 527 Grandata Ltd 458-465 Henry's Audio Elec. 504 Hussein Central TV 523 Intercomms 468 J.J. Components 493 Kwik Kook 514 Manor Supplies 475 Marapet 519 Mauritron 468 MCES 516 PC Control Systems Ltd 517 P.V. Tubes 468 Redbank 522 Sendz Components 532, IBC & OBC Stewart of Reading 519 Swift TV Publications 506 Teleplace 521 Teleprice Ltd 520 Tepco Electronics 525 Vison Care 520 Vision On 516 Vista Electronics 504 Wellview 515 Western Trade Services 524 West Mids. TV 520 Willowvale Electronics Hardy, J.W 504 Ltd IFC Harrison Electronics 466 Wiltsgrove 521 524 TELEVISION MAY 1994

TV WHOLESALE "- COLOUR ESTABLISHED 1973 - WHO ESALE NEW '13' GRADE Major Brands ONLY Satellite, Receivers, Decoders, Microwaves TV - Video - AUDIO COMPLETE BOXED - WITH STAND - HANDSET - BOOK ETC MINT LATEST NICAM FASTEXT F.S.T. FERGUSON FULL RANGE - ALL CURRENT MODELS OF TV -VIDEO IN STOCK NATION-WIDE Phone NEXT DAY DELIVERY 021-359 SERVICE - VISITORS 7020 BY APPOINTMENT FAX 021-359 6344 V 221-222 BRIDGE ST WEST, HOCKLEY, IRMINGHAM B19 2HU - JUST OFF M6 -J6 SOUTH LONDON TRADE WAREHOUSE NOW OPEN MAJOR BRAND NAMES BEST PRICES WHOLESALERS OF THORN + NON -THORN EX -RENTAL TV's & V.C.R., TESTED + UNTESTED 'B' GRADE + LIQUIDATION STOCK AUDIO: Stocks of Audio, Midi + Mini Hi-Fi CD's Radio Cassettes, Walkmans, ALL TOP BRAND NAMES AT FRACTION OF RETAIL PRICE STOCK ALWAYS CHANGING TEPCO ELECTRONICS LTD TEL 081-769 6149 071-924 1606 081-677 5749 FAX 081-769 4952 Ask for Chris Ask for Tony Warehouse Line OPEN NION-SAT 9.30 TO 6pm DO YOU REPAIR WHITE GOODS? THEN YOU SHOULD KNOW ABOUT DATAPART THEY HAVE THE LARGEST AVAILABLE RANGE OF GENUINE AND PATTERN PARTS FOR MOST BRANDS OF :- WASHING MACHINES DISEWASHERS REFRIGERATORS COOKERS VACUUM CLEANERS KETTLES IRONS TOASTERS MICRO -WAVE OVENS *NEW* 535 page pattern parts catalogue now avai able at a cost of 6 to non -account customers DATAPART LTD ELECTRON HOUSE, 100 GREAT BARR STREET BIRMINGHAM B9 4BB SALES DESK 021 766 5551 24 FAX FREE 0800 373 459 HOURS VISA TELEVISION MAY 1994 525

ANGLIAN TV WHOLESALE NEW 'B' GRADE TV, VIDEO AUDIO, MICROWAVE BEST POSSIBLE PRICES RING FOR DETAILS ANGLIAN TV WHOLESALE, UNIT 4, BRECKLANDS BUSINESS CENTRE, TAVERN LANE, EAST DEREHAM, NORFOLK TEL/FAX (0362) 691611 Open Mon -Fri 9.30am-5.30pm TV WHOLESALE AERIALS FOR TV & FM RADIO, PLUS 1000's OF MASTS, BRACKETS, LASHING KITS, CLAMPS, PLUGS, CABLES, OUTLETS, DIPLEXERS ETC. AMPLIFIERS FOR DISTRIBUTION SYSTEMS AND DOMESTIC, MAST HEAD OR SET BACK. WE HAVE ONE OF THE LARGEST RANGES, AVAILABLE FROM STOCK MAIN DISTRIBUTORS FOR ANTIFERENCE, LABGEAR, WOLSEY FRINGE, TRIAX, TELEVES, VOLEX-RAYDEX, KUBLER + MANY MORE CIDASTAIL AlEIVIIAIL SUIVIDILIIIES UNIT X2 Rudford Industrial Estate Ford, Arundel Ai CARRIAGE 0903 723726 NO MINIMUM ORDER VALUE FREE v'm TRADE TVs EX RENTAL TV & V.C.R.s BASICS FROM 7.00 REMOTES FROM 15.00 TEXT FROM 25.00 VCRs FROM 25.00 TELEPHONE ROY SMITH 0302-349583 10AM - 5PM MON-FRI A.R. INTERNATIONAL BUILDING UNION ST, DONCASTER, DN1 3AE OFF ST SEPULCHRE GATE WEST To advertise in Television magazine please ring Pat Bunce 081-652 8339 NOW OPEN ON.... TEESSIDE * Ex -rental TV & Videos * Best deals on working and nonworking stock SUPERSCREEN 184 Linthorpe Road, Middlesbrough Telephone: 0642-250850 0 o uvrvo J QUALITY USED T.V. & VIDEO COMPLETE RANGE OF T.V.'s AND VIDEOS MOST MAKES AND MODELS AVAILABLE, L,), STOCK ARRIVING DAILY T.V.'s from 3.00 Videos from 30.00 Prices Ex -VAT Free Delivery Service to most areas of the U.K. UNIT 75, BARRACKS ROAD, SANDY LANE INDUSTRIAL ESTATE, STOURPORT-ON-SEVERN, WORCESTERSHIRE DY13 90B Just 10 Mins from M5 Junct. 6 Worcs North For your export requirements contact us. 0299.879642 or 819643 FAX: 0299 821984 526 TELEVISION MAY 1994

TV WHOLESALE 111111110011INIIVAIIIIIIIIIMMIMISOM C.T.V. (NORTH EAST) 9A/B, 94 Carrmere Road Leechmere Ind. Est. Sunderland SR2 9TE No.1 in the North East for all makes and models of high quality ex -rental televisions and video recorders at very competitive prices For Further Information Please Contact Nick or Brian on 091-523 5554 Fax: 091-523 8035 Export Enquiries Welcome. SWITCH ON TO B' GRADE AT PRICES SECOND TO NONE 14" Remote Portables 85 14" Teletext Portables 105 14" Fastext Portables 115 20" Remote CTVs 110 20" Teletext CTVs 125 20" Fastext CTVs 135 21" Fastext CTVs 145 20" Nicam Fastext 160 21" Nicam Fastext 175 All stock tested & working and boxed with remote & instructions Also 7000 sq ft of returned TV, Video & Hi-Fi. Too many to list. Don't delay phone today to make an appointment TEL: LEEDS GOGGLEBOX 0532-310359 DISCOUNT ELECTRICAL WAREHOUSE ASK FOR ROBERT ALL ABOVE PRICES PLUS VAT AT 17.5% CENTRAL 111 EX -RENTAL SUPERB RANGE OF TV'S & VCR'S THORN & GRANADA DIRECT LOADS AVAILABLE FROM SOURCE EXPORT ENQUIRIES WELCOME 'B' GRADE SWITCH ON TO TOP QUALITY BRANDS OF PHONE TODAY FOR BEST RESULT * Stock arriving daily, TV: from 3.00. Videos from 25.00. Quality ex -rental TVs & Videos. Most makes and models available. QTY 1 QTY5+ Microwave 69.00 65.00 Ferguson Surround Speakers 35.00 25.00 Ferguson TV Stereo Speakers - Special 1 Price! 15.00 - min 15 TV/stand - mixed sizes 5.00 3.00 Portable colour 14" new b/grade 95.00 90.00 20" colour remote control 120.00 115.00 20" colour Fastext 135.00 129.00 Ferg FV61LV Video Plus, LP Centre design 199.99 185.00 Ferg FV62LV as above + 2 Scan 290.00 210.00 Ferg FV67HV as above + Nicam 279.00 265.00 plus FV70B, FV71LV, FV72LV P.O.A. TVs 51cm, Ferg, C5IN Nicam P.O.A. plus C51NX, B59N, B59NX, B78N1 P.O.A. plus A1OR, B14R, B14C, B39F P.O.A. B49F, B51F, C51F, B59F P.O.A. * Toshiba TVs, Videos P.O.A. Samsung TVs, Video, Microwave P.O.A. CENTRAL TV WHOLESALE DISTRIBUTION LTD London contact: John Eley Estate. Nobel Road Edmonton N1 B Tel: 081-807 4090 Fax: 081-884 1314 Birmingham contact: Mick 369 Stratford Road. Sparkhill Birmingham B11 Tel. 021-772 1591 Fax: 021-766 6383 TELEVISION MAY 1994 527

CLASSIFIED CLASSIFIED CLASSIFIED ETT CLASSIFIED No other consumer magazine in the country can reach so effectively those readers who are wholly engaged in the television and affiliated electronic industries. They have a need to know of your products and services. The prepaid rate for semi display setting is 12.00 per single column centimetre (minimum 3 cm). Classified advertisements 8.40 per line, box number 22.00 extra. All prices plus 171/2% VAT. All cheques, postal orders etc., to be made payable to Reed Business Publishing. Advertisements, together with remittance, should be sent to The Television Classified, 11th Floor, Quadrant House, The Quadrant, Sutton, Surrey SM2 5AS. PHONE 081-652 8339 FAX 081-652 8931 r1 Orlon VISA SERVICE MANUALS We have what is probably the largest range of Service Information available anywhere. From the Earliest Valve Wireless to the Latest Video Recorders. Colour Televisions, Test Gear, Audio, Computers, Amateur Radio, in fact practically anything. Originals or Photostats as available. Also available. Our FREE catalogue detailing Hundreds of Technical Books Repair Guides available. vv0,sand SONow Available. Our Service Manuals Index on P.C. Disc 13.5"1 for use on your Computer. just 3.50 with FREE everlasting Updates. Order MP -285. Mauritron Technical Services (5TV), 47A High Street, Chinnor, Oxon OX9 4 DI Tel: 0844 351694 Fax: 0844 352554. Please forward your latest catalogue for which I enclose 2 x I st Class Stamps. or 3.50 for the Technical Books Catalogue plus Manuals Index on PC DiscIsl. NAME Address TRAINING If vou require a home study course in the fundamentals of electronics, either to begin a career, pursue a hobby. or refresh your knowledge. a BASIC ELECTRONICS course, from the Direct Personal Learning scheme, could be just what you're looking for. Contact: K. Sparrow etc.. 11 Claydon Green Whitchurch BRISTOL Avon BS14 ONG Telephone: (0275) 835669 POSTCODE SERVICE DATA SERVICE MANUALS For most U.K. European, Far East & USA makes Thousands of different models available Prices (Stock Items):- VCR, VCP, Camcorder, TVNid - 13.50 CTV, Colour Monitor, Camera - 8.50 MTV, Mono Monitor, SAT, MWV - 6.00 Add P/P 1.50 for first item then 5Cp for each additional item - no VAT Cheque/PO with order only please. D-TEC PO BOX 1171, FERNDOWN, DORSET BH22 9YG Tel: 0202 870656 IN FOTECH mop 76 Church Street, Larkhall, Lanarkshire ML9 1HE Tel.: (0698) 883334 - (0698) 888343 Fax: (0698) 884825 Send a large SAE for your FREE catalogue of our other publications HOW WOULD YOU LIKE TO GET ANY SERVICE MANUAL YOU WANTED FOR ONLY 8.50? WELL, NOW YOU CAN! We are running a very special offer of any 20 manuals for only E170. No catches! Order as you need them (no time limit) including all those expensive manuals you couldn't previously afford. No hidden expenses like post & packing (that's included in the price). And if that isn't enough! We are giving away our Data Reference Manual FREE with every subscription to this 20 manuals for 170 offer! EUROPEAN SCRAMBLING SYSTEMS NEW 3rd Edition European Scrambling Systems is the "bible" of the black arts of signal security. Now in Euro' Scrambling 3, John McCormac analyses all of the latest hacks and scrambling systems Only 32.00 inc. P&P PRACTICAL GUIDE TO BUYING, SELLING, REPAIRING AND SERVICING USED CD's, TVs and VCRs They cover everything from choosing good ex -rentals to covering more stock faults for common ex -rentals than elsewhere at many times the cost. These are brilliantly practical and inexpensive repair and service systems Only 9.95 each or f25.00 for all three FAST FIX IF a a_a I t I Now in NEW A4 Format, containing over 150 pages. If you keep back copies of 'Television, FAST FIX is for you. Edition 3 lists over 8000 fault symptoms and hundreds of technical references from 12 years of Television. References are arranged alphabetically listing make, model, fault symptom and page reference. Covering the years 1982 -Dec 1993. FAST FIX could pay for itself after just one repair. Regular updating takes place and all customers will be notified. Complete FAST FIX index E16.00 inclusive. Overseas orders please add 3.00. MONEY BACK GUARANTEE IF YOU ARE NOT COMPLETELY SATISFIED Send Cheques'Postal Orders, payable to: J Humphreys. 13 Mansfield Avenue. St Johns Park Hawarden, Clwyd CH5 3S0 N. Wales For further details, tel 0244 532961 528 TELEVISION MAY 1994

' CLASSIFIED CLASSIFIED CLASSIFIED CLASSIFicii INDEXES! INDEXES! THOUSANDS SOLD WORLDWIDE EDITION 10 of the complete indexes now published containing over 8,000 Faults listed in 12 Years of Television Magazine Indexes are alphabetically listed by Make,Model,Fault,Ref and are now Available for just : 8.00 8.00 15.00 For Television & Satellite Faults For Video, Camcorder & CD Faults Or For both sets complete Please add 1.50 (UK), 3.00 (Overseas) to total order to cover post & packing. A LOW COST UPDATE SERVICE IS ALSO AVAILABLE. FULL DETAILS DESPATCHED WITH ORDER. To secure your copy/s please make Cheques/Postal Orders payable to: 31 PRENTON ROAD WEST, PRENTON,BI RKENHEAD, E. CI MERSEYSIDE L42 9PY I N FOTECH = 76 Church Street, Larkhall, Lanarkshire ML9 1HE Tel: (0698) 883334 - (0698) 888343 Fax: (0698) 884825 Or Send a large SAE for your FREE catalogue of 100's of publications. Please add 2.00 for Post & Handling on any order (post free on orders over 30.00) We have the world's largest collection of: "SERVICE MANUALS", "SERVICE SHEETS", "CIRCUIT DIAGRAMS", "FAULT-FINDING GUIDES", "REPAIR GUIDES", "CIRCUIT DESCRIPTIONS" For CTVs, VCRs, CDs, Satellites, Midi Systems, Computers, Amps, Oscilloscopes, Mono TV's, Radios, Camcorders, Walkmans, Car Stereos, Tape Decks, Printers, Photocopiers and almost everything else! "We've got the lot!! Data Reference Guide (4th Edn.) Only 5.95 With over 120 pages and incorporating a full "chassis guide" and Cross-references on every piece of CTV, CVR, Audio, Domestic and Test Equipment we can find! It is still the best guide on the market. We Also Run the Largest Data Library in the United Kingdom (Please ask for details) Phone/Fax or write for a FREE quote on any model Orders usually sent "same day" as the order is placed Nol For Fault/Repiur Guides Giant Fault Guide Circuits Akoi, Albo, Amstrad, Ariston, Benda, B80, Bush/Rank, Decca/Totung, Doric, Ekco, Ferguson, Fidelity, EMI., Fisher, GEC, Grundig, Hitochi, Hinari, M, JVC, Korting, Lowe, Luxor/Skontic, Mitsubishi, Murphy, Nordmende, Orlon, Panasonic (basic), Philips, Sanyo, Sentra, Sharp, Sony (loosic), Telefunken, Toshiba, Triumph, Zonussi. Giant Compendium hos all of the above for only 9_95 (Normally 16.95) (Fault & Diagnostics Pocketbook for Ferguson 1X90/7X100 Only 4.95) TV AR Fault & Servicing Guides ( 16.95 each) The CTV's covered by this volume include:- Albo 10-14, Conic Decca/Totung to '89, Elton, "loan 4 5, 8, ITT 1100/1200 plus Dig ivisien to '89, Lloytron, Philips KT4/K40. The CD's covered range from Albo to Sony incorporating Philips, erg', Hitachi and others. Lastly, there ore over 50 more different audio sets covered os well as the CD players. V 21 Covers:- The C's covered in this volume include Ferg' TX- 85 to TX -100 (plus all vorionts and the ICC5), Philips 2A & 3A chassis, Sharp's PS7 Chassis and others including Telefunken and Nordrnende. This volume also has info' on various satellites including Amstrad, Ferguson and Pace. The Atari ST (520/1040) is covered as well os a wide selection of VHS -C camcorders including Ferguson, Amstrad and Philips. Each book has a binder full of the matching Circuits Available at 39.50 each CTV CIRCUIT COLLECTIONS Each Collection Contains All the Circuits of the Most Popular Chassis ALBA 25 AMSTRAD -FIDELITY 25 B&0 25 DECCA-TATUNG 25 ETRON GROUP 12 FERGUSON-BAIRD 45 GRANADA 25 GEC 25 GOLDSTAR 15 GRUNDIG 40 HINARI 20 HITACHI 40 ITT-NOKIA 45 JACKSON 10 JVC 20 LOHJA 50 MATSUI-SAISHO 40 MITSUBISHI 50 NEC-NVVC El 5 NORDMENDE 15 PANASONIC 60 PHILIPS 75 PIONEER 8 RANK 20 REDIFFUSION 20 SANYO 35 SONY 75 TELEFUNKEN El 5 TOSHIBA 40 TRIUMPH 20 WALTHAM 15 ZANUSSI 20 Video Fault Finding Guides (5 books per series) Series 1: Ferguson 3V00/01, 3V16, 3V22/23 Baird 8924, JVC HR -4001, Philips N -1500/N-1502, N -1700/N-1702 Series 2: Ferguson 3V29/30, Baird 8930'40, Philips 2000, Sanyo, VTC5000/5300, VTC9300. fosfia V5970 8 Clones Series 3: Baird 8931/42, Ferg 3V31/32, Pon' NV7000/8000, Philips 22VP600/700, Sharp VC2300/7750/8300/9700 Series 4: Fidelity VTR1000 & Clones, Pan' NV100, NV8600/8610, Philips VR6460, VR6560, Sharp VC108/408/651/681 Series 5: Ferg' 3V35/36/38/39!43/44/45/48/53, Hitachi VT11, VT8000/8500, GEC V4100, Pan' NV370, Philips 6920 Series 6: Grundig VS300 to 360, Hinon VXL8/9/10, Hit' VT410 to VT450, Pan' NV730 to 788, Sanyo VHR3100/3800 Series 7: Ferg' 3V58 to FV11/12, Goldstar GHV/GSE 1290-1296, Pon' D -Deck, G/G1 Decks, Sharp VC381 to VC387 (Please Note The above ore not Full Beings, only d,.. main models from each sera they actually contain more info, Only 12.95 per Series or 79.95 for all INFOTECH 76 Church Street, Larkhall, Lanarkshire ML9 1HE Tel: (0698)883334- (0698)888343 - Fax: (0698) 884825 Please add (2.00 For Post & Handling,, 4. P.C.DIAGNOSTICS SOFTWARE i Now Available - What is probably the most -*f - COMPREHENSIVE selection of diagnostics software il itr for the P.C. currently available. A vast collection of Ott programs and utilities to help you get the most from your 4obi. ( '- system. Covers such useful information as IDE Drive parameters, PC System memory diagnostics, Low Level formats for Hard Discs, Jumper settings, Compatibility tests for modems, Data recovery programs. FAT Table analysis. Analyse modify disk boot sectors, Keyboard buffer tests, Motherboard diagnostics,. System Exercisers, Setting up CD-ROM's etc etc t 0 etc. In all over 20Mb of useful information --.,, compacted onto 14 Discs with 2 reference books. If \pr------,` ) you need to get more information from your PC then this set is for you. Order TODAY. Just 25.00 + p/p. Order MP -250/251. 'All orders will include a copy of our FREE catalogu detailing the full range I Technical Books and Rep ' Guides we publish. MAURITRON TECHNICAL SERVICES (TV2501), 47A High Street, Chinnor, Oxon, OX9 4DJ. Tel:- 0844-351694. Fax:- 0844 352554. Please forward sets of MP -250/251 at 25.00 each + p/p I enclose Cheque/Postal Order or please debit my Visa/Access Card Card No. _ Expires _/ NAME ADDRF-CS POSTCODE Please add 2.35 (Overseas 5.00) to all orders to cover Postage & Packing 1 # V15.4 TELEVISION MAY 1994 529

. 11 CLASSIFIED CLASSIFIED CLASSIFIED CLASSIFIED CLASSIFIED MISCELLANEOUS JOULE A-400 CAR RADIO DECODER/RE-PROGRAMMER features Plugs directly into your IBM or compatible computer. Remove the baseplate from the radio, place the probe onto the PCB and the security code is instantly displayed. Changing the code or even fully re -programming is just as easy. ABSOLUTELY NO MODIFICATIONS TO YOUR COMPUTER ARE REQUIRED The A-400 can use either Comms 1 or Comms 2, connected via the serial lead supplied Two levels of password protection (user selectable) to prevent unauthorised use, Each decode is recorded and may be accessed at any time, again, to prevent unauthorised use. Operates from 12 volt supply, either from mains (via any regulated mains adapter) for bench use or, via vehicle cigarette lighter socket, for on site use. Easy to use software includes on -screen PCB layouts for probe location, very detailed help screens and information on how to enter codes into the radio once the set has been decoded. Supplied complete with connecting lead, purpose designed probes and a comprehensive instruction manual Technical help line available to all registered users PRICE: 375.00 + VAT Package includes software for most popular brands of radio PHONE NOW FOR FREE DEMONSTRATION DISK AND INFORMATION PACK (Please state either 3.5" or 5.25" disk) The Joule A-100 is a factory built Hi -Tech design made to a very high standard of workmanship which is set to become the industry standard for car radio decoding equipment and is available from: ELECTRONIC SOUND SYSTEMS 62 High Northgate, Darlington, Co. Durham DL1 1UW Tel: 0325 484089 Fax: 0325 465921 Mobile: 0860 221 099 TUBESveraimisemmumentommi REBUILT CRTs VDU - MONITOR - TV Image Burn -In Removed From Screen Phosphors B.S.I. Certification N.G.T. ELECTRONICS LTD 120, Selhurst Road, London SE25 6LL PHONE: 081-771 3535 Britain's Oldest Established Tube Rebuilder...V PATER AT 2, Audi-Multi-Testar, 16 test -circuits for loudspeakers, tuners, amplifiers, headphones, tape recorders. mikes. boosters,! -. - ' -.'......, ; 4..: car radios, CD -players; measurment of millivolt, drift, watt, performance; with generator, radio, signal tracer/injector, 13 volt supply etc. TEST EQUIPMENT AT2 NM 95 BINIR700 -a 71. BMR t 95 BMR 700 Regenerating Computers & Measurers for CRT's with cathode protection, gas clean-up aid, short repair; exhausted CRT's becomes bright and sharp again even if all other machines do not succeed. United Kingdom: P & E Services, Llandudno, Tel. (0492) 549246, Fax 547880. Ireland: DOnberg Electronics, Ranafast, Co. Donegal. Tel: 353 75 48275 and 48532. Fax: 353 75 71031. New Zealand: TDON Ltd., Onehunga, Auckland. Tel. 6 68-9 07, Fax 668-4 99. Germany: Ulrich Hider, Oer-Erkenschwick, Fax (0 23 681 5 70 17. CRT FOR MONITOR, SCOPES, RADAR ETC (not domestic TV) 2J 30 P1 CV3946 F21-12LC 301 CV8897 F31-12LD 3RP1A D10-210tH LD708 3WP1 D13-611GH LD729 5AP7 013-611GM M7-120W 7ABP33A D13-630GM M14-100GH 12CSP4 014-1500H M14-100LC 89L D14-173GM M17-1510VR 190034 014-17306 M23-112GV 10744 014-181GM M31-182V 1396P D14-200GM M31-184W 12.00 1424801 43.50 12.00 014-270614'50 79.50 1125.00 8431-190GR 161.50 18.00 95447GM 79.50 E69.00 D15-1000H/97 79.50 1.132.00 PA31-1910W 61.50 P.O.A. CME1431W 21.00 53.00 0/6-1000H/67 79.50 61.60 M31-271W 61.50 18.00 CME1523W 27.00 153.00 DG7-5 53.00 E61.50 M71-325BH 29.00 P.O.A. CNIE2024W 21.00 79.50 D07-6 61.50 115.75 8436-141W 61.50 18.00 CME3132GH 131.50 53.00 007-32 28.80 18.00 M40-120W 61.50 27 00 ORE1400 27 00 79.50 DG7-36 12.00 23.50 M44-120LC 61.50 27.00 021587 29.00 79.50 E4412 -B-9 E29.00 112.0 MV6-5 47.00 143.50 0/1976 47.00 79.50 F16-101GM 61.50 61.50 SE5FP31 41.00 43.50 CV2302 79.50 79.50 F21-1300R 41.00 41.00 SE5JP31 41.00 43.50 0/2472 61.50 79.50 F28-13OLDS 1.41.00 41.00 SE32BP31 41.00 Please add 5 p&p: in UK and 17.5% VAT. For overseas p&p please enquire. 110,000 pieces in stock, 400 types. Please enquire fur any type not listed above We also have in stock camera tubes, image intensifiers, magnetrones, vididons and audio valves. We wish to purchase valves type KT66, KT77, KT88, PX4, PX25, 08100. Minimum order E50 UK, 100 Export. Callers strictly by appointment only. BILLINOTON EXPORT LIMITED Unit 1E, Gillman, Industrial Estate, Billingshurst, W Sussex, RH14 9EZ, UK. Tel: 0403 784961 Fax: 0403 783519 AVO MULTIMETER Model 8, E45.00. 500 volt meters 130.00. Prices plus VAT end p&p. Send SAE for lists of Surplus instruments 81 Scopes etc. A.C. Electronics, 17 Apleton Grove, Leeds LS9 9EN Tel: 0532 496048. VIDEOCRYPT DECODER Service sheet with sinarturd contact details Eurocrypt card interface E12. E.M.O. Rarnsbottom, Lance BLO 9AG. Tel 0706 823036. OCHRE MU. Technical Services, Grundig TV spares for most rnodels to 1985, fast, friendly, helpful, sensible prices. Gt. Lype Farm, Charlton. Nr. Malmesbury, Wilts SN16 900. Tel, 0666 823228. PRIVrelevrjoEnsREeTntlILER colour videhoassto'xc'retaler'. TTI:"01r4h117r31c7o. RCS VARIABLE VOLTAGE D.C. BEMOIPOWER SUPPLY I to 24 volt, pp amp ' M 711 volts M I amp 1 to 16 volts up to It 2 amps 0 C twly statuiised Twin panel melets for instant voltage and CUM,,eadng Overload protection Fully tr2a4riavbi; c() rates eggimmin, 45 SAT Compact,-,v 3ns Posit Ins f4 NEWRY:1M. Up to 38 volts DC al 6 amp 10 ernes peak Fully variable Twin panel meters. Size 141,2"x 11"v 41/2". tfleinc VAT. Carr E6. RADIO COMPONENT SPECIALISTS 337 WIITENONSI ROD, CROYDON SUMET, U.K. Tel: 081 664 1665 List, Large ME. Deem 711rfs. Callers Waken Caned Wed. SURPLUS/REDUNDANT ELECTRONIC COMPONENTS WANTED tics - Tuners - Transistors - Valves - Diodes etc. any quantity considered - immediate payment. ADM Electronic Supplies Tel. 0827 873311. Fax 0827 874835 WIZARD DISTRIBUTORS Spares + Components Always in stock Video heads for over 500 models Spares for over 20 manufacturers Hand sets for over 200 models TV Tubes new + regunned Plus much much more Empress St Works Empress St Manchester M 16 9EN 061-872 5438, 061-848 0060 Fax: 061-873 7365 WANTED: 1000 lamps, 14V 40mA T-1, for car audio work - would import if necessary. Other non-specific car audio spares also wanted. Geoff Davies, 13 Bowen Road, Rugby CV22 5LF. Tel: 0788 574774 530 TELEVISION MAY 1994

SERVICE DATA Vintage Service Data. For all your requirements on valve & early transistor equipment. Contact "Savoy Hill Publications", Warrens View, Wrington Hill, Wrington, Bristol BS18 7PR. Tel: 0934 863491 10.00am to 7.00pm. n- %limo SATELLITE FAULT GUIDE LINE FRYERNS Most makes covered old and new. This service offers technical ads ice and cure plus Schematic diagram all for the price of E.3.50 Access and lisa Fax Service Phone 0268 558938 Anytime 4 Pince.). Mead. Basildon, Esse% Stil3 3E14 CLASSIFIED CLASSIFIED CLASSIFIED TEK-HELP HOTLINE FOR TV & VIDEO REPAIRS THOUSANDS OF FAULTS & CURES ALL MAKES JUST THE COST OF A PHONE CALL 0891 516 434 48p PER MIN 36p CHEAP RATE FOR SALE BUSINESS FOR SALE/PROPERTY OR BUSINESS ONLY 15 years trading 10,000 customers on record very busy. T.V. Video, Audio and Satellite repairs/sales + hotel work + trade work. Legitimate reason for selling contact Graham on 061 370 2083. Superb Opportunity! to Expand & Diversify Your Business in Security Installing an international award winning wirefree alarm system. Buy direct from UK manufacturer at the lowest possible prices. Massive demand - over 17 million untapped custom en s. Very high profit margins available. Excellent Free Factory Training Tel: 061 257 3175 or Fax: 061 256 3024 or write to PAS, Bankley House, Bankley Street, Levenshulme, Manchester, M19 3PQ. 440% f'' 10` le)* lc* fis P %4 fr-c* CAR RADIO SECURITY DECODING SOFTWARE A comprehensive software package for only E299.00+VAT. This package is fully upgradeable to any model of radio currently on our radio decoding list. Please phone for comprehensive radio decoding list and free demonstration disk (31/2") Upgrades will even cover the latest radios on the market. We can supply/design a package to decode any radio that you choose. Package comprises models including: Ford, Philips, Blaupunkt, Clarion, Pioneer, Panasonic, Volvo, J.V.C. In tact nearly 50 models covered. Interface and all necessary probes for connection to the radios are also supplied. Features: Fully IBM or compatible, to run on all computers including laptops, notebooks and even palm tops. Requires graphics capability for P.C.B. layouts. Runs from parallel port on LPT I. 1.) Full user friendly menus 2.) Help screens with P.C.B. layouts for exact positioning of probes 3.) Error messages to advise possible fault occurrences (e.g. incorrectly fitted probe) 4.) Adjustable for either b&w or colour monitors (Useful for notebooks, laptops etc) 5.) Fully reprograms blank or corrupted eeproms (using internal database) 6.) Customised with your company details 7.) Security coded with your choice of code to stop unauthorised access 8.) Runs from either floppy drive A, B or C drive 9.) Keeps a record of all codes (date, time, make, model) 10.) Fully upgradeable. Upgrades Ford 2006/7 RDS range E299.00+VAT. Only E199.00 + VAT if purchased together. Grundig SC303 E299.00 + VAT. Only E199.00 + VAT if purchased together. RADIO DECODING SERVICE WE COVER ALL MODELS STARTING FROM E10.00 +CARRIAGE ( 4.20 EACH WAY) That's only 16.69 or 21.62 if we arrange collection, all you have to do is make sure its boxed and adequately protected. Eeprom recoding service All eeproms are decoded for as little Please send as 4.99 including VAT. all eeproms in a padded envelope, to stop damage. VAT o MISCELLANEOUS TV LINE OUTPUT TRANSFORMERS PHONE 081-948 3702 FAX: 081-332 0583 ALBA. AMSTRAD. BUSH. DECCA. DORIC. BLAUPUNKT. FERGUSON. FIDELITY. GEC. GRUNDIG. GRANADA. HITACHI. HINARI. INDESIT. ITT. KIMARA. NIKKAI. MATSUI. MURPHY. OSAKA. NORDMENDE. LOEWE-OPTA. PANASONIC. PYE. PHILIPS. SANYO. SAISHO. SHARP. SONY. SOLOVOX. SUSUMU. TANDBERG. TELEFUNKEN. THORN. TRIUMPH. THOMSON. GOLDSTAR. BINATONE. FULL RANGE OF KONIG: VIDEO HEADS, BELT KITS, IDLERS, PINCH ROLLERS, TENSION BANDS. LARGE RANGE OF REMOTE CONTROLS IN STOCK TIDMAN MAIL ORDER LTD. 236 SANDYCOMBE ROAD. RICHMOND. SURREY. TW9 2EQ. Approx. 1 mile from Kew Bridge. ot=jm RELAY COMPUTER SOFTWARE DO YOU RENT TELEVISIONS? DO YOU STILL USE A CARD SYSTEM? Mon -Fri 9 am to 1p2.30 pm & 1.3 Sat 10 am04.3 to 11.45 11A5 am DO YOU FIND IT DIFFICULT TO KNOW YOUR ARREARS TOTAL AT ANY GIVEN TIME? If you do then we recommend our computer TV and Video Rental package. This package includes * automatic updating of each customers record * alphabetical print-out of each customer's arrears and payments missed * total arrears immediately available * easy to use and operate. NEW HIRE PURCHASE PROGRAMME NOW AVAILABLE AS WELL. These programmes operate on all I3M compatibles running under MS-DOS Free demonstration discs ava 'able CONTACT WILLIAM J THOMPSON Donaghanie Post Office Beragh Co. Tyrone Telephone Beragh 58214 (0662 7) HOW THEY WORK! HOW TO TEST! HOW TO REPLACE! Designed specifically for Domestic Appliance Engineers who want to enter the fast growing microwave Industry Packed full of useful information, presented in a simple yet informative style with comprehensive diagrams and illustrations. Fault finding procedures are included at the end of each section. The book contains easy to follow electronic control systems CROER YOUR COPY TODAY! SWIFTPARK LIMITED We mesa supply microwave oven components 113 LONDON ROAD. HORNDEAN, WATERLOOVILLE, HANTS. PO8 OBJ Microwave Oven Component Parts Guaranteed Quality Guaranteed Products Competitive I'rice CDH ELECTRONICS, keeping up with the times 3 Common Walk, Huntington, Cannock, Staffs. WS12 4NB TEL: 0543 572523. VAT Reg No 836 876 011 AWI Ltd Samuel Whites Estate, Medina Road, Cowes, Isle of Wight, P031 7LP Tel ((1983) 296121 Telex (86736) Sortex G Fax: (0983)2%122 TELEVISION MAY 1994 531

MARCONI COMPACT L.N.B. 1.DB 30 10.7 TO 1 1.7GHZ 60cm BACK MESH DISH 20, 5 post SATELLITE RECEIVERS -New Ferguson BSB SAT RECEIVER Chassis with Tuner, Modulator etc f 10 EARLY BIRD 25 Hand Set 1.50 4 Post 33V33, 3V37 BATTERY Et 0 Postage 5 12v Satellite Receiver with hand set 30 Switched Mode Trans 3112. 338. 32642 Ferguson 1 Philips switched mode tranformers for K40 5 TX100 HAND SRT (785) 110 Power Supply 0-15 Volts 0-30 Volts 3 Amps with Meters 34 Post 5 SMALL SATELLITE TUNERS (95010 1750 MHz), L.F. frequency 4000MH 19.00 each VHF/UHF &BAND TUNER 3.00 DAM MAINS CHASSIS AMSTRAD MONITOR C CAMCORDER 110 UNIVERSAL TRIPLES. NEW TYPE 14.00 SANYO VIDEO LEADS. 80p NP22 AMSTRAD Lie O.P. Transistors with Diode 25 D/453 E1.00 6v 1300mah VIDEO LAMPS. Long Lead 24p HITACHI & GEC FRAME, Thick Film Rechargeable 6.00 FIDELITY SPLIT DIODE FCC2215AE..120 Battery Pack FCC2015BE 10 FCC2215BE CIO K30 FRONT PANEL TEL-TEX TYPE 5.00 6.00 NEW GII LINE OP PANEL 8.00 PHILIPS YEARS AHEAD THE CREDIT CARD CALCULATOR Solar Powered NEW PHILPS SI3C 1833 Solar & Battery Powered Calculator THORN PANEL. TX911EC & REMOTE PANELS with Mains Trans 3.75 8.00 SATELLITE UNIT 5.00 TXIO REC & REMOTE PANELS with Mains Trans 5.00 Video Out/Audio Out, TX100 FRONT PANEL 5.00 TXIO TUBE BASE ON PANEL L and 3.00 R Polariser TX9IF 2.00 ± 35M/A THORN PANEL No.515-353, 548.02, 565-01, 509/102, 515/173,508/161 5.00 THORN TX STEREO SOUND O.P. PANEL (I.C. TA7227P) 1.00 and Decoder Socket 10 THORN VIDEO AERIAL AMP 01 M4-597.001 6.00 ULTRASONIC TRANSDUCER. 15p TX100 REMOTE PANEL No.564131C M293B/and SAA5012 10 etc TX100 REMOTE PANEL IC 10 NICAM UNIT - Ferguson made for ICC5 Chassis - home market and export - has circuit diagram and can be converted to most sets - 115. TOSHIBA Nicarn panel & IF export only has the Toshiba chip set 7.00 LARGE Foacs Pots. Fits Pye, GEC, ITT, Decca BSB SAT/REC NEW: CHASSIS, TUNER AND MOD 5 + Post 3 G 1 1 LOPT Panel G I I Tip Switch Gil IF Panel GII Decoder Panel Push ButtoniUnit GB Con/Panel New Back Type 14.00 E20.00 3.00 2.00 12.00 4.00 144MHz Changed Over Relay Aerial 50p 6251 FRAME 0/P THICK FILM HITACHI GEC 9.00 THICK FILM HITACHI HM9205A 4.00 TX 85 FERGUSON BATTERY MAINS CONVERTOR 5 each TX9-TX 100 FRONT PANEL 5 WITH REMOTE 10 NON REMOTE 8 push button 10 PHILIPS NEW TYPE U/V HANDSET 10 MIXED TOSHIBA HAND SETS FIVE FOR 12 Have you got Add Rain in your garden? PH METER 5.00 Post 15, Actuator Antennmotor E15.00 LATEST VIDEO For Laws! Philips. GEC. Pyc and Hitachi. Front panel with rnonory chip and push button and pots and LED's 6.00 NEW FERGUSON CHASSIS I KC -2000 20 TXR6 Chassis 14 NEW TX IOU CHASSIS YELLOW SPOT 20 TX90 CHASSIS WHITE SPOT 20 NEW TX 10 CHASSIS 20 Post each, 6 LNC I IGHZ NOKIA - LNB FOR OFFSET DISH 13.(X) ELECTROMAGNETIC POLAR1ZER 10.95-12.75 GHZ (9.00 11 GHZ LOW NOISE'BLOCK DOWN CONVERTER SCE 975 MADE BY MASPRO /14.00 AMSTRAD VIDEO MOTORS 5.00 SATELLITE TUNER UNIT 2427611 with Base Band, Video Out 8.00 TX 10 8 way hutum unit 24r 0 24.3Amp MAINS TRANSFORMER 10 MIXED FERGUSON CIRCUIT DIAGRAMS MSHIFCF09 8.00 3.00 5.00?.?? 75p TX100 FRONT PANEL 5 8 Button SALORA SAT RECEIVER CONVERSION KIT For models 24M60, 25M90, 28M90, SB1206E, SB1365 15 TX90 TO TX100 8 BUTTON UNIT 4.00 VIDEO AMSTRAD HANDSETS (HOME MARKET) 7.00 (EXPORT) 2.50 WILL WORK IN HOME MARKET 6.000 and 4.600 4.700 3 PB500 Panic and Button Transmitter 180MHz 1.00 GI I CAP 250V, 470M 1.35 LEADS Scart to Scart all pin connected 2.00 New Eprom for converting Ferguson BSB Receivers to D2 MAC and PAL - 99 channel is tunable and each one can be put into memory - also has menu. 20 PAL panel (to convert to PAL) 20 SEND FOR DATA Gas Soldering Irons New Type 10.00 Variety Nickel Cadmium Batteries from Telephone Type to Sub.C.50p per cell. Mainly in packs of 6 to 8. HITACHI UHF -VHF SMALL TUNER ET598A 5.00 E1.595A 5.00 GREY OR BLACK 11.50 5AMP MALYS LEAD WITH PLUG SOCKET FOR TM' EQUIPMENT ETC. 116D4-025-001 )...but, spat choke for TX9 4 PHILIPS UNIVERSAL BATTERY TESTER SBC 1695 1.00 NEW DETECTOR 110.00 PHONE HOME TO CHECK WHETHER YOU HAVE AN INTRUDER SEND FOR DATA REGULATED PWR. SUP 500WA I 53.,123, DC switched & - MOO MADE BY PLESSEY - MADE IN ENGLAND New public telephone exchange original price cost 299.00 Network exchange line (at home or in a small business) has two telephones and cables and NS5107 control unit SPECIAL PRICE 45 Send for data DECODER C -CAM PHILIPS MADE for K40 CHASSIS IC No. TDA 3590 5.00 56420A 20A/600V THYRISTOR 1.75 ITT BG2032.642A TRIPLER 5.00 ITT/KOKIA HF IF MODULE 24K No 5828-64-10 15.00 TERE 7-008A - 115-B-2010 ECC-2885PLE TEEF 1-030A UHF, VHF TUNER - SMALL TYPE 4 EACH BRIDGE RECTIFIERS - MIXED 10 FOR 1 TVK 186-5 TRIPLER 3.50 TVK 76-5 3.50 SEND FOR DATA D2 MAC SATELLITE RECEIVER 35 ( 10 Post) THORN M494B1 on Remote Panel.5 TELEPHONE BATTERY SANYO 3.6V 250/MA - 12 VARTA 3.5V 280 M/A 3.00 FEEDHORN FOR OFFSET ANTENNA 8.00 HITACHI U/V HAND SET VIDEO 14 THORN FRAME IC TX100 etc IC TDA 3652 IS OBSOLETE REPLACEMENT TDA 3654 12.00 TX100 SWITCH MODE TRANS 5157/48.5 AND 1X1D4252(511 06D3082001 STEREO SOLAR RADIO VHF AND MW 10.00 C 11 470 MFD 250v 1.35 3V33 HAND SET 110 12 Volt Relays 20p with D/P changeover PHONO I'0 LEADS 3 Metre LEAD SCART TO D PLUG lily BRIDGES RECTIFIER Mined /30-31 to 34 2 Amp to? Amp.. 0 for 1.00 1 METRE SCART LEAD 1.00 TX90 TX925 TX100 Mains Switch with Stand-by and Loud 50p each BURGLAR ALARM USE INFRA RED DETECTOR WIDE AND SHORT ANGLE WALL MOUNT 8 WITH RELAY 2433752 120 2432984 2432871 2432301 015 2435016 6. I 2433952 2434391 EACH 2432211 T9048 A DST 50213 TEK30690 K4 L.O. P 1 K411 2433452 2432904 2434451 114 SATELLITE TUNER 950MHz.1750MHz 5.00 SPLIT -DIODE 2433752111[ TX/00 Oran Spot 15.08 IX IOU Yellow Spot 110.00 TX90 White spot L.O.P.T. 115.00 Split Diode 1 lir 112.50 Orion 65.3M GEC 65-9793-6 TX9 Thom 2432101.2 15 2434141 EACH 2434492 2434493 TTT PANEL CMC 301 CM(' 113 CMC 3112 CMC 115 CMC L5 OD NW CNC 96/4 VIDEO LEADS 4 for 11 SEL ITT IFB254E72 Front Panel f15.00 DECCA - GEC - ITT push button 5.00 10 BURGLAR ALARM 2.00 with siren 9 VOLT 25 Way Plug and Socket with Case 1.50 DST 81N243 TF134023AD 110.00 MS1-11F.PT1.31 112.00 MSH I FI3W27 112.00 D5TI86N243 10.10 3220029 10.00 TOSHIBA DST 186N243 10 TFB-402.3AD CIO CP90 Philips Split Diode 110.00 2435141 115 2432491 10 2435(165 C15 36761 36881 2692120/10 37051 CTK I.opt 36212 33651 36072 36362 36482 36761 36831 36832 36833 36921/79 36922/79 TX85 2435701 2434393 2435016 2435014 10 2436797 2434494 15 TRANSFORMERS 24357/01 10 2435012 10 FERGUSON 47003481 10 AMSTRAD TVR3 LPTS 10 TFB3069D EQU TFB4009AN PHILIPS HAND SET G11 HAND SET PHILIPS RC5 G11 TEXT ULTRASONIC 10 EASY CONTROL 10 ULTRASONIC 10 AT2036/00 AT2048/11 AT2055 AT2076/35 AT2076/38 AT207N51 CVC 820 CVC 800 AT2076/55 AT2076/71T RCO ST C13325 0712041 FB165KA Orion 2076/51 2432461 2433451 BRIDGE RECTIFIERS 10 FOR 1.00 4 Amp for Video Power Supply NFRA RED DETECTOR (for outside use) with Time Control & Distance Control 12 TR V3 Amstrad Cassette Mechanisms. New with 2 motors and sound head. 15 5. Amstrad Television Tuner UHF. Small, Fits most Amstrads. 6. SENDZ SEE BACK PAGE FERGUSON SAT HAND SET SR DI SR D2 SR D3 SR 04 g2 FERGUSON ICC5 STEREO O.P. PANEL ICs TDA8405 TDA8421 TBA1204 10 SHARP 10 FIT MOST EACH SETS New Thorn 0004-235 Hand Set 002-01 Type u/v ( 10) VIDEO MOTOR for VT568 typc VC62DD8 atm AMP TUNER IF for V7568 Hitachi & GEC 19.00 UN 6, DIODE TRIPLERS 2,00 4600 TO 8600 AMSTRAD VIDEO HAND SET WITH LCD /110 NICAM Mk11 KIT MODULE 120.00 with data Burglar Alarma to set 2 Mains Transformer 4.00 240v in 110y to 120v out I amp post L3 532 TELEVISION MAY 1994

I i 31e111/ I I I 1 \1l SEINIDZ COMPONENTS 0702 338894 (To order see back page) I LA 1 it-til 1.00 TUNER UNITS fx40 TXI911 Inners with AE socket Li Thum IN Inner Vl'ap eye. to FIC111.13 4.541 N153/34 1' 2 lhorn TX III Expor1 V Cap UHF E3.00 11A11485ANT I INV 57836621i 1'I II" 1I1F Small 4.00 TPCI373 gor, NI. W GS 1 um, V ( ap 3.50 11A51333 SP I AA7750 3 50p um VHF ki58657p 1.00 I. ( AID on Panel li(16131/ 2.50 VA) k1.191bb I 3.00 W5044E550 LIMO S586514P (1.110 5150430 350 3 SP M50143-011P Receiver 17.4100 Rawl C. No. SAI-13015 -VIA1334X IP Is...IA's1"(1' 'E 110 lumtahle Satehte Modulator IV Sound 5 543112!WPM BCH Sound 6.001114 MI'M 1141/ 1 FE RUN Cost 2.541 RF Filter (lamp for coax Cable Circuit 11,1 detecting R.I. Send 1.111.1:111:1111 using clamp (25p each! Ferguson Switch Mode Transforrnet TX35. 1X86. 1X101 0.511 each V111/41.11F. 2 BE0-1545A E.6.00 ETC200 NEW fi'lin 12v TX -111111 24/. DC plover suppl/ H C2003 4.011 regulated 2 (1H - TunerV'Cap I litaehi After 1979 E1543 F-1-547 /"454111 01.00 El 546 DST 3310243 6.1111 F.' 1.5414A 1'11E1'111. Miniature Tuner I /S I 3511241 (10.00 each Hitachi ism I htlnl Mixed 410.10 EL.C104-2 600 HI 1013 E6.011 14111.1PS RC5410P 8 HAND SET ICC5 E/W coil. 2 EARLY BIRD SAT TUNER WITH 950-1750 MHz RASE BAND 6 WITH DATA FERGUSON LoPT EST 24" Tx 1 oo - 260482 15 ICC5 Ferguson Switch Mixl 1 ram 3112.3802642 4.00 LOPTS AMSTRAD 3714016 5 3216001 5 TOSFIBA RI' M(YrE CT9123 4 AMSTRAD SANKYO CAPSTAN MOTOR 6,000 3 AMSTRAD LOADING MOTOR 6,001) 1 'I 5 Ierensi in!land Set TRIPLER BG-2032-642-3002 5 Moot( a Ask., 1 AI 12 )1 5111p ((1';GRUNDIG IK2000 5 novo HANDSETS FOR 8600 SERIFS AMSTRAD FOREIGN ORIGIN 110,0.1824 11.140V:1, t2r,v."-1--- El 1 F3341111 An/strati 1 'III' I um, 5.00 4. VIET 1 '1IF E(15221' 6.00 WITH I..C.D..3.55,,,,,,,,,,,, 10.00 V)ITIVIIIT 1.1; Kw 1 Iest t12.30 (5.110 K 1 / K /I II 111110111/1C 15.10 FERGUSON PAY HAND SET' 4 FOR 1 I X9 C.CAM Decoder.5.00 the A. Philips hand, K I,- K ln, les, Ni It, shall) 3175,12( ::03 I -HI I -7 TOSHIBA KIENIOTE CT9233 AND ("1938 3 1 Types Fidelity from panek with t v & pats T.2.00 each BB 103 /OP 1111 105A 312 L1.00 III) 1115B3 13 MOO 1311 III% x 12 "0 1311121a I P V-134 4.0) E121 E6.04 13111-111. 6.14 1'4201'11P) 5.0 1'3-13 Photo 3.10 1'344 Coax 6.10 111131.- T.6.01 1'344(' 111.111 OH I 4.0( (11114 UVI In 8.00 IA III!WWI 48.04 S-117 5.01 I'5 s I islet 5.01 M ull"vcic" "I '51 1111'11.- AlTheation. video tape recordeis. 'IV.111er.. a-0wpm, dowd circuit!v.(' C 1 R system Data supplietl HOMO INS 'SIX SC min lilt ril I. ill3x2. ill" Trader & earth clip 25p NEW 11321 Mullard (4.1111 Special Price 13.00 RC41111 Kra and Teletex C14.00 I I N101E810 Set lent 12.50 I xi),iii, loot 12.511 I \4,\ 1 Inintin pool MOO It\ Ill I t1l.111. Pi. 5.50 I I I I I 1 II VIII 1 tater 151011111 5.111 IA 'NOV 10p /1, IIIIC/ 050 Mono Stand By Switch nth Coil 1.00 I11;31' WV -01223 10 for IMO 2:trnp bridge rec wire end 1'"44 1111/ 4:5 70 ISp 5KE462.112 ISp Edda/ A111,11.111 21)11 VT -op I utter E5.00 laiv. 1(5571.N1/ 51X1ns Stha II V 1.11, 5111.111111 111IF 414.00 PHII.IPS VI IF 'IN 1 NIVERSAL HANDSET 12.00 RC5 Poi -tank A Rolm, e IS S.111,1 /S. ktitstuni 1-1114 t5.00 KT3- K45-10.00 ii Push Nati in.1.11 1.1.1 (TH 0.00 Mitslit 1 '1 II VIII I new 14 py I a no CV4-45 ETC 1. 'I 2-11/ I 1 V Cup I I nit (6.00 t 'i ii.- v II- V ( -aps on panel 4.).181 We haw all parts for Philips Handsets 11111( 10 20 I urn lid 40p I litaehi 11' IC IIAM 133S1' 1 (3.00 1' 21 ea panel 6.110 RI 3-I/ TT14 CEC TEADEHIDER 13 IC Panel with eable loth, 9.50 PHILIPS Deo der SAA IC 5020-5i 01 504119-5050 K411-1-1,11 Panel 01.00 IC(5 TUBE BASE ON PAN 1-1 5.00 ICCS DECODER PANT 1 15.00 It '('S TEX!' PANEL 15 K 33 Decoder 4"16 15 SC111111.1 OP 4.00 I luck Film Daughter Ki 33302_2.1_'7-43341 ticin I ' Cll. 1711 lex Roo Front Panel with 5.00 1 Plug in K1 Focus PIA K40 ti., 1,,lit, -1 lib': Base with transistor & hwus 1.50 \ 111tulsc Base on Panel E1.011 PHILIPS HAND SET K35 -K4 -K411. etc 111 1 'ItiverNil -I npler woh small lotly. pot. Green type 7.111 THORN CASSETTE HOI NINA: PAS263115t I 18.00 LITHIUM RA111.1tV B -2 3 Volts TUNER. SAT 2000 KH(' D1514C.036 D1514C.046 MN125OBJC S16393 11 Elk' I ID6140305A911 1-MP47C1637N M50442-553SP num-111.1.3 E A c H 20p is As, I '5.11623 VIII 2.161 VIII' 1-11F Inner S 11.11111 E3.011 ENAsiy,tt,2 yip nn E5.011 Chang, us,,s, dell co cs Bp, 15,, it ll load 5OP 1_ 1.4,f, Inner E5 FT 121 5 N i.111 1:5 I 1-1-1BAV 1:3 1 'III 111111, and Ili 1111111C can ion/all) 5.011 (..,,,, i 14p t iy.ks Sphinx 1.00 Infra Red I- nuinng Diode 20p NE23611 Small Neon Lamps 61:1',1/4 Phillips 5p \111008,4 5 Watt Amps. LPI (62 13.00.1 75 WE HAVE OVER 250 TYPES OF STK AND STR I.C.S. SEND FOR LIST 35-1513-3 Tatung GEC 3 N1110111 'no Print Type 1441 to 1,P12 5.00 Pluhus I landset IC 3 00 SAA30111P.1.00 MA113.161 W(161 E-3041 BC1 2037 6.12 101, I 1 ipler (Mulch!! f7 FerguwtnIland Set tor 1K 21100 and IK 7111111 01 X, Et/ RC5 ;110 1/1 3176 I At II ( 517- I -ENT -IATE Replact. 'land Set lot Phi lii+. IS ET K311 K4 etc 1:125i1 1 HORN II Us', 3' Is ruin PHILIPS RC51-I IIIANDSlill 'IS 1,11 I ype 23121311 KM -KT HANDSET Repaired lot 00 I I SANVO MACN1TRON li Y B VISIKI. TO II- 3 141.0,K(,),,1 HIIR / Ix i III Panels Eel gun, ei Mixed from 1-X4 to R-05 20 IV Aertal RIng I ype.10p I \1110 Renage Iland Sets 6 Philips Video RenioN 1 Lind Sot W 1 Is I Is N, T. C D D pl. TS, HA Nokia humor II" RE -11. -.Module {3'_41_53 Ferguson IX IV3 413 IC AM743111 ''.5 Mil -I IT 11/.Nodule 2 TX 502304- II t in FERGUSON ICsFerg. 13032 3.00 18.1P47C 634N 26145 LIMO ST6391B1/112 I( -1-17 14.00 (-MC' 3111 Iron! panel 5.111 cmc.3113 'tom panel 5.011 HI M.I. 412400I -RU I 8 Way Presets for 1'X10-TX100 HI Li 'rosin e. I S TUNER. IF ENV 57836 ( i2f 3 HITACHI S I 5 \ D BY MAIN TRANS 10 2213881 AND 1.210049 PHILIPS K35 ETC 12 WAY SWITCH WITH KNOBS 50p 60.40 SOLDER 51$Ki 4 HIGH GAINI'N ANTENNA UHF -VHF 11111:1 IN 32DB AMP I2V DC/220 AC 9.25 AMSTRAD VIDEO FRONTS WITH FLAP LONG CHASSIS ALL MODELS MADE IN 1991 TO 1992 AND DECCA PRO LINE. 3 fatadi 20 AUTOMATIC TELEPHONE ALARM DIALER SEND FOR DATA.ANSTRAD 6000 HEAD %%nu MOTOR I.P 0 AMSTRAD - LONG CHASSIS AND SHORT CHASSIS 'POWER SUPPLY 4 MODELS 1991 TO 1992 AMS'T'RAD- DOUBLE DECKER SWITCH MODE 8 POWER SUPPLY 5 515 FBAD-DOUBLE DECKER PANELS 5 each. I)()UBLE DECKER FRONT 6 with flaps AMSTRAI2 LONG CHASSIS DISPLAY PANEL 1992 10 1993 4 AMSTRAD TUNER I E33-1301 3 IF 2 6 FOR 10 TX10 FOCUS UNIT CONY ERSION KIT ITT TELETEX 8 BURGLAR ALARM SIREN 12 VOI.T 50p HANDSETS AMSTRAD EASY CONTROL. MODELS 4600 TO 8600 3 each FERGUSON THOMSON SAT HANDSET SRDI TO SRD4 2 each AMSTRAD NEW VIDEO DISPLAY PANEI,S ETC. YEAR OF MODELS 1991 TO 1992-20 FOR 10 1993 TOSHIBA FAST TEXT HAND SET 3.50 01 Vt32.51.002 Text Panel ICC5 Ferguson E110 AMSTRAD IC FOR VIDEOS 6206 TO 8600 DISPLAY IC 14 DN 728 AND 14 DN 513 3 each International Rectifier EITI Diodes G7711,11k' 14 61: V 3 for 8p 6A NNW:Stud Diodes 211p BIN 43.31X1R TAW DT 710 50p 6A 1111141V Stud Thosles 211p.71..3,173 pm, c. p leg DT 711 Mullard SOP Shari/11AM, and IF 13111537 PA( II K 3 AMSTRAD 6004) 511'10 IFS IL' N1N616 3AS AND 63675 6 each 1 utter 1E 1'11460 3 Amstrad (.3 TOSHIBA HEAT SYNC' COMPOUND 6 FOR KILO DRUM

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