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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: 329
AiwaVXT1000Dead TV sectIC4 STK7348, R103 1R5 3w, R104 27R 3W, R105 1k 1/2w. C90 1µ 50v was to blame14-09-04
AiwaVXT1000STK7348 chopper chip int failsC88 3300pF 1kv can be the cause even tho' it looks ok14-09-04

AiwaVXT1000 Mk2DeadHt ok at 120v - ICP1 o/c14-09-04
AiwaVXT1000 Mk2DeadSTK7348 s/c pins 3 & 7, also R103 1R5 3W o/c, R104 27R 3w, R105 1k 1/2w & C90 1µ 50v14-09-04
AiwaVXT1000 Mk2Dead - no line driveD7 9v1 zener & C105 330µ 16v both s/c14-09-04
AiwaVXT1000 Mk2Failure of IC STK7348 in tv psuReplace:R102. 33ohmlW Part No S5 34A 330 000 R104 27ohm 3W Part No Sl 330 703 000(6.25UKP) RlOl 33ohm7W Part No Sl 330 862 000(8.37UKP) Also please check and if necessary replace:R103(3.76UKP) R105 Replace as required. R109(4.00UKP) NOTE: Do not replace IC on its own.<<14-09-04
AiwaVXT1000Mk2DeadSTK7348 psu chip & C88 0.0033pf 2kv14-09-04
AiwaVXT1000Mk2Dead TV sect - vcr sect okC88 0.0033µ 1kv burnt; STK7348 psu chip s/c; R109 3R9 7w o/c14-09-04
AiwaVXT1000Mk2No pic sound okC88 3n3 1kv burnt14-09-04
AiwaVXT1000MkIISound no picture.Replace IC4(STK7348) and C88(3n3 1kv).14-09-04
AmstradCTV1000Blank white raster , sound control o/cQ7601 ( 25C1675 ) , C7901 ( 240pf ) S/C tune/f14-09-04
AmstradCTV1000Line collapseDry joints line lin coil L770214-09-04
AmstradCTV1000Line hold drifts int.Dry on line hold control14-09-04
AmstradCTV1000Raster - blank - sound Ok.Q7601 ( 2SC1675 ) C7901 ( 240PF ) S/C14-09-04
AmstradCTV2000DeadCheck C509 for o/c Or R726 ( 1k ) o/c14-09-04
AmstradCTV2000Distorted sound.R313 high in value.14-09-04
AmstradCTV2000Field collapseCheck V at pin 9 TDA3652 ( 28V ) & V at pins 12 & 15 LA7800 .If no 12V at pin 12 R840 ( 10ohm ) 2Watt o/c14-09-04
AmstradCTV2000Field top foldoverC720 4µ7 160v14-09-04
AmstradCTV2000Int going off.LOPTX arcing.14-09-04
AmstradCTV2000Reduced height/foldoverC720 4µ 160v o/c14-09-04
B & O4000Frame - int.5TR12 , 5C3414-09-04
B & O4000HT FluctuatesCheck 6R29 , 6R30 ( 56k ) For High Resistance Also 6C20 , 6R2714-09-04

B & O4000HT Fluctuates6D19 ( 39v Zener ) Leaky.14-09-04
B & O4000Intermitant Field ScanCheck 5TR12 Base-Emitter & 5C34 ( 2000u f ) For o/c14-09-04
B & O9000 33XXTripping - & going to standby.Dry joint on C18 S-correction capacitor.14-09-04
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 & 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 & OMX2000Bright on lh side, dark on right then goes completely darkDry joints pin 1 LOPTx14-09-04
B & OMX2000Dead TEA2026 defectiveLOPTx desroys chip so replace as well & replace or fit 15v zener between o/p pin 7 chip & chassis14-09-04
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