| Make | Model | Problem | Solution | Date |
| | | |
| Found: 534
|
| Grundig | CUC3800 | Int switches to SECAM . | C507 100uF 25v. Connects to pin 2 TDA8140 line drive IC. | 14-09-04 |
| Grundig | CUC3800 | No sound | IC2210 U2829B - fit same type as replacement | 14-09-04 |
| Grundig | CUC3800 | No sound - just hiss | IC2110 U2829B sound IF demod chip on sound IF stereo board | 14-09-04 |
| Grundig | CUC3800 | No sound - multistandard TV on wrong setting | On front panel press"N", select 0,1,2,3 or 4 with P+/- buttons. Each no. refers to a different std. Press "M" to store | 14-09-04 |
| Grundig | CUC3800 | PICTURE DARK ON LEFT HAND SIDE BRIGHT ON RH SIDE | C2582 1uF ON PIN 15 TDA3505 DRIED UP AND OC | 14-09-04 |
| Grundig | CUC3840 | Int dead | D661 BYW72 in 12v supply going o/c | 14-09-04 |
| Grundig | CUC3840 | INT DEAD SET COMES BACK ON BY ITSELF | D661 BYW72 12v RECTIFIER INT OC | 14-09-04 |
| Grundig | CUC3850 | Dead - HT present , no line & display corrupt | IC656 LM317 12v reg not turned on because IC850 micro SDA2080-A003 faulty. When replaced, tripler arcing - proved to be the cause | 14-09-04 |
| Grundig | CUC3850 | Dead - no line drive - 150v HT ok | No 12v at TDA8140 drive chip. R661 0R2 burnt out caused by D661 BYW72 leaky | 14-09-04 |
| Grundig | CUC3850 | Pic pulses at random | Poor contact plug to Aquadag on crt | 14-09-04 |
|
|
| Grundig | CUC3850 | St/by only | 2SD1432 LOPTr T572 s/c due to s/c in TDA8140 line dr chip (Don't use BU508A instead of 2SD1432) | 14-09-04 |
| Grundig | CUC3850 | St/by only | Check setting of pre-set (standing bias for opto coupler) on vertical st/by panel | 14-09-04 |
| Grundig | CUC40 | Frame collapse. | D2758. | 14-09-04 |
| Grundig | CUC41 | Dead - blowing fuse intermittently. | D657 ( MZD160 ) | 14-09-04 |
| Grundig | CUC41 | Poor contrast | T2251 in tuner/if has glue on it's legs , try cleaning it off. | 14-09-04 |
| Grundig | CUC41 | Raster - white. | R723 high or o/c. | 14-09-04 |
| Grundig | CUC41 | SOUND NO PICTURE NO LINE DRIVE | TDA2595 US | 14-09-04 |
| Grundig | CUC41 | Tripping. | R651 in series with set HT control o/c. | 14-09-04 |
| Grundig | CUC41 | Tuning drift | C2230 0µ1 surf mount in tuner leaky (across TDA5430) | 14-09-04 |
| Grundig | CUC41 | Tuning drift with 33v down to 28v | C2234 0µ1 sm cap in tuner/if leaky - across pins of TDA5430 | 14-09-04 |
| Grundig | CUC41/70 | Frame collapse. | D353 s/c. | 14-09-04 |
| Grundig | CUC41/70 | If channel changed sometimes snow would appear | Check on/off switch momentary contacts | 14-09-04 |
| Grundig | CUC41/70 | Sound - no sound & snow on picture. | DJ IC681. | 14-09-04 |
| Grundig | CUC41/70 | Standby - int going into standby. | C642 ( 100u f , 10v ) intermittent o/c by TDA4600. | 14-09-04 |
| Grundig | CUC41/70 | Tuner - drift for 1st 10 minutes. | If TDA4426 , change C2237 to 22uf , if TDA4427 change IC. | 14-09-04 |
| Grundig | CUC41/70 | Tuner - snow on picture & no sound. | DJ IC681. | 14-09-04 |
| Grundig | CUC41B | Intermittent colour when cold. | Q2567 ( 4 , 43Mhz Xtal ) | 14-09-04 |
| Grundig | CUC41B | Intermittent display at switch on & no memory | IC663 ( MC78NI5 ) 15v supply to IC2301 down to 10v. | 14-09-04 |
| Grundig | CUC41B | Memory - channel 1 & 2 losing memory. | IC2375 ( MCM2801 ) | 14-09-04 |
| Grundig | CUC41B | Memory - no & intermittent display at sw on. | IC663 ( MC78NI5 ) 15v supply to IC2301 down to 10v. | 14-09-04 |