| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Grundig | CUC3490 | Field fault - non lin with top missing | Pin 2 field chip only 12v (24v) C411 1000µ 50v supply smoother u/s | ||
| Grundig | CUC3490 | dead no line drive or ht | TR651 mains tfmr pins 1-15 o/c, pins 15-17 s/c | ||
| Grundig | CUC3490 | Dead - chopper tr s/c, HT fuse o/c | Dry joints pin 5 daughter board | ||
| Grundig | CUC3490 | Dead - chopper tr s/c & fuse o/c | C667 2µ2 (2 caps) dry joints or low cap | ||
| Grundig | CUC3490 | Dead | o/c HT fuse; s/c chopper tr; sus dry joints pin 5 of daughter pcb | ||
| Grundig | CUC3400 | Tripping comes on if adj line frequency down. | C653 ( 4.7u f ) | ||
| Grundig | CUC3400 | tripping | set ht pot R637 | ||
| Grundig | CUC3400 | Startup - No s/up - ticking from transformer. | C653 ( 4.7nf ) connected to pin 15 of IC. | ||
| Grundig | CUC3400 | Poor R/C response | R1212 33R missing in sensor pcb | ||
| Grundig | CUC3400 | Poor purity & focus. | C433 ( 1 , 000uf , 25v ) | ||
| Grundig | CUC3400 | No start up with ticking | HT at chopper coll - C653 4n7 connected to pin 15 power chip u/s | ||
| Grundig | CUC3400 | No start up - ticks | C653 4n7 connected to pin 15 of power chip u/s | ||
| Grundig | CUC3400 | No sound | C266 1000µ 25v s/c; R367 8R2 safety res o/c | ||
| Grundig | CUC3400 | No chan change when cold - display changes ok tho' | Dry joint pin 15 tuner/if socket | ||
| Grundig | CUC3400 | Int or perm tripping - ok on dummy load | Timing cap C653 4n7 |