| Make | Model | Problem | Solution | Date |
| | | |
| Found: 534
|
| Grundig | CUC3400 | No chan change when cold - display changes ok tho' | Dry joint pin 15 tuner/if socket | 14-09-04 |
| Grundig | CUC3400 | No sound | C266 1000µ 25v s/c; R367 8R2 safety res o/c | 14-09-04 |
| Grundig | CUC3400 | No start up - ticks | C653 4n7 connected to pin 15 of power chip u/s | 14-09-04 |
| Grundig | CUC3400 | No start up with ticking | HT at chopper coll - C653 4n7 connected to pin 15 power chip u/s | 14-09-04 |
| Grundig | CUC3400 | Poor purity & focus. | C433 ( 1 , 000uf , 25v ) | 14-09-04 |
| Grundig | CUC3400 | Poor R/C response | R1212 33R missing in sensor pcb | 14-09-04 |
| Grundig | CUC3400 | Startup - No s/up - ticking from transformer. | C653 ( 4.7nf ) connected to pin 15 of IC. | 14-09-04 |
| Grundig | CUC3400 | tripping | set ht pot R637 | 14-09-04 |
| Grundig | CUC3400 | Tripping comes on if adj line frequency down. | C653 ( 4.7u f ) | 14-09-04 |
| Grundig | CUC3490 | Dead | o/c HT fuse; s/c chopper tr; sus dry joints pin 5 of daughter pcb | 14-09-04 |
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| Grundig | CUC3490 | Dead - chopper tr s/c & fuse o/c | C667 2µ2 (2 caps) dry joints or low cap | 14-09-04 |
| Grundig | CUC3490 | Dead - chopper tr s/c, HT fuse o/c | Dry joints pin 5 daughter board | 14-09-04 |
| Grundig | CUC3490 | dead no line drive or ht | TR651 mains tfmr pins 1-15 o/c, pins 15-17 s/c | 14-09-04 |
| Grundig | CUC3490 | Field fault - non lin with top missing | Pin 2 field chip only 12v (24v) C411 1000µ 50v supply smoother u/s | 14-09-04 |
| Grundig | CUC3490 | Field non lin | C411 1000µ 50v supply to fop chip leaky | 14-09-04 |
| Grundig | CUC3490 | No pic - sound ok | Check A1 volts present on crt base - if not sus leakagein socket | 14-09-04 |
| Grundig | CUC3490 | No sound | TDA4480 sound chip | 14-09-04 |
| Grundig | CUC3490 | No sound | TDA448C IC sound chip | 14-09-04 |
| Grundig | CUC3490 | No sound | R367 o/c & C366 s/c (audio o/p stage supply) | 14-09-04 |
| Grundig | CUC3500 | DEAD HT LOW AT 80v ( 196v ) | D635 SC | 14-09-04 |
| Grundig | CUC3500 | No sound/vis - +C volts low at 80v instead of 196v | D635 BAT86 s/c | 14-09-04 |
| Grundig | CUC3500 | NO SOUND-VISION | CHECK D635 ( BAT86 ) SHORT | 14-09-04 |
| Grundig | CUC3600 | breathes with brill | Tripler/focus unit u/s | 14-09-04 |
| Grundig | CUC3600 | Broad white vert bar & SECAM light on | BU508A LOPTr overheating. TDA8140 chip faulty - driving it at twice freq | 14-09-04 |
| Grundig | CUC3600 | No pic - dim vert band | Check loptr base wfm - if low or twice normal speed check C507 100µ & IC550 TDA8140 | 14-09-04 |
| Grundig | CUC3600 | No pic - pic blanked | Check supplies & sandcastle pulse. Brill & contrast cont volts at pins 2 & 16 TDA8442 IC350 - if low & won't increase TDA8442 is sus | 14-09-04 |
| Grundig | CUC3600 | No picture - EHT Ok. | If pins 2 & 16 do not increase if brit/cont is adj IC350 TDA8442. | 14-09-04 |
| Grundig | CUC3600 | NO PICTURE JUST DIM VERTICAL BAND ON SCREEN | C507 100uF OR IC550 TDA8140 | 14-09-04 |
| Grundig | CUC3800 | Dark on left, bright on RH side | C2582 1µ faulty - lum signal decoupler to pin 15 TDA3505 chip | 14-09-04 |
| Grundig | CUC3800 | EW fault aft tripler replacement | R571 4R7 & IC555 E/W chip | 14-09-04 |