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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: 159
AlbaCTV734CHANNEL LIGHTS NO HTD806 SC ( POWER SUPPLY )14-09-04
AmstradWSTV7328NF 11AK19Narrow with E-W bowingR629 10R o/c - check for dry joints on caps14-09-04

B & O7730Int colourResolder joints to edge conn on IF panel14-09-04
B & O7730No sync & weak videoTr1 BC547C on AV/Scart pcb leaky14-09-04
Bush1473TDead - off with flashBUZ77B chopper s/c; R805 330k hi res at 570k; R889 0R47 o/c & replaced TDA4605-2 & C831 1µ 50v as a precaution14-09-04
Bush1473TTo enter serv mode on "11AK08" version (printed on front edge of chassis)1 Press vol- on the keypad 2 Press 'prog' on the handset 3 Press '--' on the handset 4 Press TV on the handset (That's the one with the blank screen on it) Use prog + & - to select parameters and vol + & - to alter values. The red button stores and the exit with 'TV'14-09-04
Bush1473T 11AK08Line tearingC818 (47MFD 160VW), +B line smoothing capacitor (high ESR).14-09-04
Bush1473T 11AK08Pic int smeary or dissappearsDry joint PL901 earth wire on crt base panel14-09-04
Bush1473T 11AK20Field collapseR709 sm 10k adjacent to FOP chip not properly soldered in14-09-04
BushWS6673 11AK19P5Dead - check for dry jointsAlso replaced LOPTr which then produced 1" line scan - D622 BY228 leaky & R629 2R7 o/c. There's a mod for psu (11DYC19P) to fit heatsink for diode that burns up14-09-04
BushWS6673 11AK19P5Dead - D823 blown (not shown on cct)When replaced still faulty, IC802 MC44604P chopper chip u/s - also check FET chopper Tr14-09-04
BushWS6673 11AK37Width excessiveC622 12nF 350v s/c14-09-04
BushWS6673SILTrips with LOPTr 2SD2579 s/cCheck dry joints C626 flyback cap & measure its value 12nF 2kv14-09-04
BushWS7673E/W faultyDry joints C630 caused R629 44R to go o/c14-09-04
BushWS7673SILDeadD002 dry joints, chopper FET s/c, L801 o/c14-09-04
ContecKTN3732Dist sound/low volR125 36k o/c by af o/p tfmr14-09-04
Dantax7300LED goes Green then Red after 1/4 seccheck CL 23 for dry joint (behind LOPTx)14-09-04
Ekco731No green.R458 ( 39k )14-09-04
FergusonM6373GCT TX91GNo or intermittent TeleTextCheck for dry joints on IX02 Reg IC on the small Text pcb.14-09-04
FergusonM7073GHBright white pic with poor focusAltering focus control affects amplitude of video at crt cathodes - CRT faulty14-09-04
FergusonT5173Washed out pic like duff crtRT43 68k on crt base hi Res14-09-04
FergusonTX91 Thomson 10MH73B 10MG73BdeadSMD TF21 near LOPTx not soldered in factory14-09-04

FergusonTX91 Thomson 10MH73B 10MG73Bdead on 12V supply (car supply)RD09, RD19 22R 0.5W fusible 14-09-04
FergusonTX92 M7073GHChanges chans on its ownDry joints IR01 micro14-09-04
GoldstarPC73AFlyback lines at top of screen when coldFR359 10R fusible o/c14-09-04
GrundigCUC73WON'T START UPD663 SC14-09-04
GrundigCUC7301Blown psu caused by R661 220R going hi resalso replaced IC630 UC3842, T665 MJFS8004, D663 3v6 Zener14-09-04
GrundigCUC7301DeadDry joint C669 blows T665 & IC63014-09-04
GrundigCUC7301DeadC669 1000pf dry joints & burnt; MJF18004 T665 s/c; ZD663 had 25R reverse resistance, D624/621 1N4007 mains rects s/c & UC3842AN faulty14-09-04
GrundigCUC7301Dead - Chopper T665 blown plus -IC630, D633 3v6 zener, D662 BA157, bridge rects D621-4 1N4007, R661 220R, R663 18R, 3 x sm diodes under psu sect, dry joints C66914-09-04
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