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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: 534
GrundigGSC100Dead.Di511 or C2502 ( 100u f , 16v ) on EHT control regel baust PCB.14-09-04
GrundigGSC100Frame - bottom foldover - cramping at top.R2522 ( 2.2k ) goes high.14-09-04

GrundigGSC100IF EHT IS VERY HIGHCHECK DI508 IS OPEN14-09-04
GrundigGSC100Line break up.C2502 ( 100uf , 16v ) on EHT control regel baust PCB.14-09-04
GrundigGSC100No frame.Di447 ( 1N4007 ) and/or TDA1170.14-09-04
GrundigGSC100R607 - repeated resoldering of R607.Di2502 ( 4.7v ) zener.14-09-04
GrundigGSC200No results.R607 o/c , R621 o/c , if goes agn few hrs later Di2502 4.7v14-09-04
GrundigGSC200 ChassisArcing in picture. Reduced width with torn edges.The HO Transformer has a built in fuse holder which houses a 50mA fuse. (connected in series with the high tension cable). Replace the fuse and clean the contacts.14-09-04
GrundigGSC200 ChassisBlack screen, EHT at about 18 KVs.Change Di511.14-09-04
GrundigGSC200 ChassisNo sound or Picture, led displays not lit.EHT at 18KV.C2607 in relay PCB Sced.Check also D334 and D335 in tuning module as in one case they were found to be Sced together with C2607.14-09-04
GrundigGSC700Int smeary flat picture.Luma delay line leaky.14-09-04
GrundigGT1401No sound or pic5v supply missing because D114 cathode no soldered thro' print14-09-04
GrundigGT2103Hum barmains smoother 47µ 385v o/c14-09-04
GrundigGT2105Bright white rasterR315 10R on crt base o/c14-09-04
GrundigGT2105Dead - HT pulsatingTr302 LOPTr s/c14-09-04
GrundigGT2105Dead - no line driveR315 o/c14-09-04
GrundigGT2105No GreenR908 on crt base & R802 near RGB chip14-09-04
GrundigGT2105Unstable pic & sound33v tuner supply fluctuating at 25v - tuner faulty14-09-04
GrundigM82-100IDTVTripping - stops if tripler dis'dCheck caps in psu control sub panel for low capacitance14-09-04
GrundigM82-102IDTVInt cuts outChopper trfmr breaking down14-09-04
GrundigMW70-3699Dead 1.6A fuse blownCheck 270k res for o/c behind chopper Tr & replace chopper Tr14-09-04
GrundigMW82-2700 CUC2058Dead - pri volts onlyR60002 (680K 1W) was O/C situated just behind the switch mode MOSFET on the primary side.14-09-04

GrundigP37-440Sound - random volume up & down.IR IC TFMS3300 or 4300 with metal screen over it.14-09-04
GrundigP37-440Tuning - random channel change.IR IC TFMS3300 or 4300 with metal screen over it.14-09-04
GrundigP45-440/1GBNo pic - sound ok - faint arcing noisedry joints ww res R516 in line stage14-09-04
GrundigSE7086TOP etcint no sound - when increased gives popping noiseMains sw st/by contacts int14-09-04
GrundigST 70-755Grundig ST 70-755 TOP/LOG. Picture quality is great and TV turns on fine and displays picture fine for 1 - 2 hours. Then screen starts quick, short burts of flicker / flashes. (Picture can always be seen durring these flickers but is very anoying and obCheck electroylitics round frame output i.c. some of them are low in capacity24-06-05
GrundigST1772/9TOPField foldoverTDA8350Q chip14-09-04
Grundigst63-650There is a white strip in middle on picture.This means then the stage of frame is fault, You should check: - is there voltage of power on this part - IC of frame (probably TDA 2653 or TDA3654 ) - joins among main board and deflection coils - the deflection coils 12-12-05
GrundigST63460Dim blank raster - no picture.D2334 ( TD190 ) leaky.14-09-04
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