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Repair tips

Electronic appliance repair tips database - TV (LCD,TFT,Plasma,Digital), Monitor, VCR, DVD recorder and player, Digital camera, Audio equipment, Microwave ovens, Phone systems, Computer repair

MakeModelProblemSolutionDate
Found: 425
AiwaVXT1450KField collapseFR812 3R9 1w fusible o/c - no other fault found14-09-04
Akashi1450DeadQ811 SF8J41 reg thy s/c - used TAG626 as replacement14-09-04

Akashi1450st/by onlyR801 1R5 5w o/c14-09-04
AlbaCTV4850Field collapse - no soundZD402 12v 1.3w, R422 6R2 2w & C909 47µ C910 10µ 14-09-04
AmstradCTV250Bright raster with fb linesTEA5101A driver on crt base failed & feed res14-09-04
AmstradCTV250dim red rasterTDA3301B decoder chip u/s14-09-04
AmstradCTV250int offdry joints chopper tfmr14-09-04
AmstradCTV250No contrastTr102 BC558 leaky c-e14-09-04
AmstradCTV250No secondary suppliesReplaced C418 100µ 25v, C489 100µ 40v, C425 1µ 400v, positor PTC401, R422 5R6 1w o/c, and chopper tfmr14-09-04
AmstradCTV250/280E/W intdry joints CH351 choke feeding pin 5 IC351 TDA814514-09-04
B & O2500 LX2802Int reverts to st/by briefly with blank raster on returnTr6 - use BC338-40 as replacement - checks ok out of cct14-09-04
B & O5500Snowy pic, no sound & erratic colIC6 TDA8120 in IF14-09-04
B & OL2500Servicing the L2500Picture on cover & layout.14-09-04
B & OL2500 LStuck in standby.BU508 s/c.14-09-04
B & OL2502No soundIC101 pin 7 (5.9v) = 0v C111 100µ 25v s/c14-09-04
B & OL2502 (3866)Dead & squealingResolder a mass of dry joints on the PSU & line output panel then replace the short circuit line output transistor (TR11) S2000A3.14-09-04
B & OL2502 3866Int starting , chopper drive present. If pin 3 IC1 , LM358 low check R14 & R16 , 220k.If still no go , check TR20 on Tuner IF PCB .14-09-04
B & OL2505st/by only after short squeal at sw onlop tr TR11 S2000A3 s/c and resolder dry joints esp at C34 6n814-09-04
B & OL4500Poor pic with blue cast10k B vid o/p Res on CRT base o/c14-09-04
B & OLS5000St/by only with LED dimming when chan butt pressedCheck connections in metal can under crt neck, esp wickman F1& micro, xtal etc - see Sept 91 TV Mag for article14-09-04
B & OLS5000Txt fault - blue blocks darken on lh sideC56 4µ7 25v & check for drys around IC2 on txt pcb14-09-04
B & OLX2500 37XXNO STBY LED SET STUCK IN STBYC14 470uF 16v OC14-09-04

B & OLX2502Field distortedReplaced C44, C45, C46, C49, C26, and C54 plus FOP chip TDA2170 that orig had dry joints14-09-04
B & OLX5500 3903St/by only after initially being hard to turn onC20 & 25 47µ 50v 14-09-04
B & OLZ5000 3766Won't work on batt - ok on mainsAux sw behind mains sw contacts needed resetting - make sure battery supply is adequate14-09-04
B & OMX1500INT GOES INTO SEEKMOMENTARY SWITCH NEAR MAINS SWITCH INT SC ( REMOTE CONTACT )14-09-04
B & OMX1500Won't tuneTRANSISTOR 7070 LEAKY BC54814-09-04
B & OMX1500 78XX raster but no sound or picture.ICP1640 ( 630mA ) o/c.14-09-04
B & OMX3500Crackling SoundDry joints audio o/p chips IC3 & 4 on PCB10 (bottom board)14-09-04
B & OMX4500Vision buzz & noisy picCheck C176 10µ under screening can14-09-04
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