| Make | Model | Problem | Solution | Date |
| | | |
| Found: 534
|
| Grundig | GSC100 | Dead. | Di511 or C2502 ( 100u f , 16v ) on EHT control regel baust PCB. | 14-09-04 |
| Grundig | GSC100 | Frame - bottom foldover - cramping at top. | R2522 ( 2.2k ) goes high. | 14-09-04 |
| Grundig | GSC100 | IF EHT IS VERY HIGH | CHECK DI508 IS OPEN | 14-09-04 |
| Grundig | GSC100 | Line break up. | C2502 ( 100uf , 16v ) on EHT control regel baust PCB. | 14-09-04 |
| Grundig | GSC100 | No frame. | Di447 ( 1N4007 ) and/or TDA1170. | 14-09-04 |
| Grundig | GSC100 | R607 - repeated resoldering of R607. | Di2502 ( 4.7v ) zener. | 14-09-04 |
| Grundig | GSC200 | No results. | R607 o/c , R621 o/c , if goes agn few hrs later Di2502 4.7v | 14-09-04 |
| Grundig | GSC200 Chassis | Arcing 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 |
| Grundig | GSC200 Chassis | Black screen, EHT at about 18 KVs. | Change Di511. | 14-09-04 |
| Grundig | GSC200 Chassis | No 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 |
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|
| Grundig | GSC700 | Int smeary flat picture. | Luma delay line leaky. | 14-09-04 |
| Grundig | GT1401 | No sound or pic | 5v supply missing because D114 cathode no soldered thro' print | 14-09-04 |
| Grundig | GT2103 | Hum bar | mains smoother 47µ 385v o/c | 14-09-04 |
| Grundig | GT2105 | Bright white raster | R315 10R on crt base o/c | 14-09-04 |
| Grundig | GT2105 | Dead - HT pulsating | Tr302 LOPTr s/c | 14-09-04 |
| Grundig | GT2105 | Dead - no line drive | R315 o/c | 14-09-04 |
| Grundig | GT2105 | No Green | R908 on crt base & R802 near RGB chip | 14-09-04 |
| Grundig | GT2105 | Unstable pic & sound | 33v tuner supply fluctuating at 25v - tuner faulty | 14-09-04 |
| Grundig | M82-100IDTV | Tripping - stops if tripler dis'd | Check caps in psu control sub panel for low capacitance | 14-09-04 |
| Grundig | M82-102IDTV | Int cuts out | Chopper trfmr breaking down | 14-09-04 |
| Grundig | MW70-3699 | Dead 1.6A fuse blown | Check 270k res for o/c behind chopper Tr & replace chopper Tr | 14-09-04 |
| Grundig | MW82-2700 CUC2058 | Dead - pri volts only | R60002 (680K 1W) was O/C situated just behind the switch mode MOSFET on the
primary side. | 14-09-04 |
| Grundig | P37-440 | Sound - random volume up & down. | IR IC TFMS3300 or 4300 with metal screen over it. | 14-09-04 |
| Grundig | P37-440 | Tuning - random channel change. | IR IC TFMS3300 or 4300 with metal screen over it. | 14-09-04 |
| Grundig | P45-440/1GB | No pic - sound ok - faint arcing noise | dry joints ww res R516 in line stage | 14-09-04 |
| Grundig | SE7086TOP etc | int no sound - when increased gives popping noise | Mains sw st/by contacts int | 14-09-04 |
| Grundig | ST 70-755 | Grundig 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 ob | Check electroylitics round frame output i.c. some of them are low in capacity | 24-06-05 |
| Grundig | ST1772/9TOP | Field foldover | TDA8350Q chip | 14-09-04 |
| Grundig | st63-650 | There 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 |
| Grundig | ST63460 | Dim blank raster - no picture. | D2334 ( TD190 ) leaky. | 14-09-04 |