| Make | Model | Problem | Solution | Date |
| | | |
| Found: 534
|
| Grundig | CUC7350 | St/by only | LM317T reg s/c by its heatsink clip | 14-09-04 |
| Grundig | CUC7350 | Tripping | R60027/28 0R46 gone hi res | 14-09-04 |
| Grundig | CUC7350 | Unstable HT | R60028 0R68 o/c - check it out of cct! | 14-09-04 |
| Grundig | CUC7350 | Width varies with pic content - HT varies between 119-129v | R60027 0R56 in curr sensing network - also check R60028 in parallel - values vary with screen size | 14-09-04 |
| Grundig | CUC7350 | Dead - +8v supply absent | R61021 15R safety res in 8v reg o/c | 14-09-04 |
| Grundig | CUC7350 | Dead - mains fuse shattered | D60013/4 mains rects s/c, chopper FET T60020 IRFBC40 s/c used BUZ90 UC3843 replaced as prec,caused by dry joints chopper tfmr | 14-09-04 |
| Grundig | CUC73xx series ST55-725 | Power supply blow up | Caused by C60029 470pF 1.6KV which was badly dry jointed. Only seems to affect sets fitted with blue cap - the orange ones are ok. | 14-09-04 |
| Grundig | CUC73xx series ST55-725 | Sound faulty | the soldered joints on C60029 were very poor | 14-09-04 |
| Grundig | CUC740 | Chopper tr blows instantly | R633 27R o/c in base cct - also blew lop tr | 14-09-04 |
| Grundig | CUC740 | Dead - chopper tr blows instantly at sw on | R633 27R o/c in base cct - also blew LOPTr | 14-09-04 |
|
|
| Grundig | CUC740 | dead - comes on briefly when tapped | dry joints chopper tr and surroundings | 14-09-04 |
| Grundig | CUC740 | Dead - S1644 1.25A fuse blown | T654 BU208A s/c - check for arcing at C634 | 14-09-04 |
| Grundig | CUC740 | Excess width | D572 SKE4G2/06 | 14-09-04 |
| Grundig | CUC740 | INT CUTOUT , GOING TO SBY OR DEAD | D671 5v SUPPLY | 14-09-04 |
| Grundig | CUC740 | Int Dead | D671 BY299 in 5v supply int o/c | 14-09-04 |
| Grundig | CUC740 | Int dead or int st/by | C633 100µ 25v | 14-09-04 |
| Grundig | CUC740 | Int sound | Check if +G supply missing - if so check relay contacts | 14-09-04 |
| Grundig | CUC740 | lines across screen - no sound | adj R2741 on Ablenkung pcb | 14-09-04 |
| Grundig | CUC740 | No adj of vol,col,contrast etc | IC2335 MC144111 inside IF/Tuner can | 14-09-04 |
| Grundig | CUC740 | Pulling/Rolling - weak sync | 2 x 1µ & 1 10µ cap in IF module | 14-09-04 |
| Grundig | CUC740 | Pulling/rolling with weak sync | replace 2 x 1µ caps & 1 x 10µ cap in IF module | 14-09-04 |
| Grundig | CUC740 | Sound couldn't be reduced &"88" in display | MC144111 IC2335 on tuning pcb | 14-09-04 |
| Grundig | CUC7530 | No H drive | (BC848) which is used as a line protector. | 14-09-04 |
| Grundig | CUC770 | LINE TEARING | CHECK OR CHANGE C501 ( 1000uF , 25V ) | 14-09-04 |
| Grundig | CUC7861 | Poor field,no tuning, no col, smeary pic | 45v supply low due to R552 2R2 o/c | 14-09-04 |
| Grundig | CUC7861 | Sound from bass speaker weak | CT4140 BC849C sm tr o/c | 14-09-04 |
| Grundig | CUC7861 | St/by only - started as line collapse | R503 4R7 safety res, TDA8350, D503 BY228 s/c & T572 2SD1432 breaking down under load - also check D502, D438 33v zener | 14-09-04 |
| Grundig | CUC7890 | Focus poor | C07 680pF 12kv leaky | 14-09-04 |
| Grundig | CUC95 | Dead - BU208 s/c. | R646 high. | 14-09-04 |
| Grundig | CUC95 | FIELD COLLAPSE | R2754 1M PRESET | 14-09-04 |