| Make | Model | Problem | Solution | Date |
| | | |
| Found: 534
|
| Grundig | CUC2490 | Comes on with the volume at max. No adjustment of volume is possible. | Push "N" in the keyboard, set the balance in the middle and adjust volume to the desired level. It should work O.K after this. | 14-09-04 |
| Grundig | CUC2490 | No sound. | Short pins 1,3 of TDA6200 with 13,15 repectively.If sound comes on, replace TDA6200. | 14-09-04 |
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| Grundig | CUC2500 | Sometimes switches to St-by. Eventually does not startup at all. | Replace TDA3640 chip | 14-09-04 |
| Grundig | CUC2600 | Dead - no o/p from psu | C631 100µ in psu | 14-09-04 |
| Grundig | CUC2600 | Int blank raster or snowy pic | Tuner | 14-09-04 |
| Grundig | CUC2600 | Tuner - snow or blank raster from cold. | Drys in tuner. | 14-09-04 |
| Grundig | CUC2800 | Arcing from LOPTx former to adjacent components | Tripler faulty | 14-09-04 |
| Grundig | CUC2800 | Dead - psu working ok | Relay contacts | 14-09-04 |
| Grundig | CUC2800 | No sound | Check TDA6200 sound proc & U2829B sound dem chip | 14-09-04 |
| Grundig | CUC2800 | Sound from one chan only & no brill adj | Micro SDA2011-A005 faulty | 14-09-04 |
| Grundig | CUC2800 | Sound low & dist | U2829B IC sound chip | 14-09-04 |
| Grundig | CUC2800 | The tripler had failed. After replacing it the set | Microcontroller chip type SDA2011 -AOO5 . Make sure that you get the right one for the set. | 14-09-04 |
| Grundig | CUC3300 | POOR FOCUS OR PICTURE SO DIM IT CAN HARDLY BE SEEN | C433 1000uF 25v ( NOT 16v AS ORIGINALLY FITTED ) DO NOT RUN SET IN THIS CONDITION AS THE SCAN COILS MAY OVERHEAT AND CRACK CR | 14-09-04 |
| Grundig | CUC3300 | Poor purity & focus. | C433 ( 1 , 000uf , 25v ) | 14-09-04 |
| Grundig | CUC3300 CUC3400 | Poor focus | Usually the focus pot on tripler faulty but check C433 1000µ for s/c, if its 16v working - fit 25vw (can cause scan coils to overheat) | 14-09-04 |
| Grundig | CUC3400 | +B decreasing when average brightness of picture increases. | Change C611 47uF cap. | 14-09-04 |
| Grundig | CUC3400 | Arcing/random chan change | tripler | 14-09-04 |
| Grundig | CUC3400 | Blue raster with fb lines | TDA3505 vid proc chip IC9531 on chroma board | 14-09-04 |
| Grundig | CUC3400 | dead | on/off sw u/s CHS - G102 | 14-09-04 |
| Grundig | CUC3400 | Dead - & tripping. | Set HT control ( R637 ) int o/c , D666/D664 s/c , IC686 78M05 | 14-09-04 |
| Grundig | CUC3400 | Dead - all fuses intact | D691 BYV28/100 s/c (20v supply) | 14-09-04 |
| Grundig | CUC3400 | Dead - repeatedly blows T661 | Replace IC655 TDA3640, D666 RGP30M, R637 1k preset, C661 47µ 63v, D662 ZPD3v9, R661 1R & C667 0µ15 or 2µ2 | 14-09-04 |
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| Grundig | CUC3400 | DEAD 800mA FUSE BLOWN | DRY JOINTS ON CHOPPER TX CHECK D663 664 666 C653 4n7 C667 2u2 | 14-09-04 |
| Grundig | CUC3400 | Dead or tripping | Set HT pot R637, D666 BYV16 s/c, D664 BA159 s/c or IC686 78M05 s/c | 14-09-04 |
| Grundig | CUC3400 | Dead with buzz from Ipsalo Tfmr | The +M supply ok at 11v in st/by but dropped instead of increasing to 20v when sw on. C630 0µ68 leaky | 14-09-04 |
| Grundig | CUC3400 | Dead, 800mA SI642 fuse o/c, chopper T661 BUT11A s/c | Check for dry joints Ipsalo tfmr or D663, 664 & 666 faulty also check C667 2µ2 | 14-09-04 |
| Grundig | CUC3400 | Dead. | Drys on main PCB. | 14-09-04 |
| Grundig | CUC3400 | Int colour & rh side of pic blanked | TDA2579 timebase chip | 14-09-04 |
| Grundig | CUC3400 | Int dead | Pin 0 on lopt (eht overwind) arcing internally - new lopt reqd | 14-09-04 |
| Grundig | CUC3400 | Int or perm tripping - ok on dummy load | Timing cap C653 4n7 | 14-09-04 |