Make | Model | Problem | Solution | Date |
| | | |
Found: 30
|
Beko | 11AK08 | Dead aft thunderstorm | 1N4148 diode measured about 460KOhms both ways | 14-09-04 |
Bush | 1473T 11AK08 | Line tearing | C818 (47MFD 160VW), +B line smoothing capacitor (high ESR). | 14-09-04 |
Bush | 1473T 11AK08 | Pic int smeary or dissappears | Dry joint PL901 earth wire on crt base panel | 14-09-04 |
Bush | 2868NTX 11AK08 | Child Lock removal | use default pin code 734. | 14-09-04 |
Crown | 11AK08 | dead | R809 0R47 o/c, Chopper tfmr TR802 faulty | 14-09-04 |
Crown | 11AK08 | Dead with R809 0R47 in psu burnt | Usually caused by chopper tfmr TR801 s/c turns. D810 26 & 12v supply diode s/c. HT high at 126v (110v). R805 330k 1w o/c. | 14-09-04 |
Crown | 11AK08 CRV37 | Dead with BUZ77 chopper Q801 s/c | R809, R805 330k & check/change C817, C831 1µ 50v & C812 47µ 16v | 14-09-04 |
NEI | 11AK08 | Black lines across pic | R461/463 560R connected to pins 42/43 IC401 - may measure ok | 14-09-04 |
NEI | 11AK08 | Brightness low or varies | C907 1nF or 10nF 1kv leaky in A1 supply or R925 470k o/c | 14-09-04 |
NEI | 11AK08 | Dead - no o/p from psu | R809 o/c, TR 802 shorted windings, Q801 chopper tr s/c, replace D808 BYT52M, R805 o/c & check mains filter choke TR801 for damage, R802 o/c, IC801 s/c pin 6 or D806 s/c | 14-09-04 |
|
NEI | 11AK08 | Field - bottom cramp | C701/2 4n7 leaky, C705 3µ3 50v o/c | 14-09-04 |
NEI | 11AK08 | Field - top cramped | IC401 | 14-09-04 |
NEI | 11AK08 | Field - top foldover | D701 or C703 470pF leaky, R717 1k or 560R o/c, C704 0µ1 leaky | 14-09-04 |
NEI | 11AK08 | Field collapse | Check for cracks around IC701 & chip itself, if 26v absent at pin 9 R711 4R7 fusible o/c; C701/2 4n7 leaky, R707 3k9, R702 10k, R706 1R8, C426 10nF, C453 33nF | 14-09-04 |
NEI | 11AK08 | Field cramped with bright line across centre | Scan coils - should read 13.5R | 14-09-04 |
NEI | 11AK08 | Field jitter | R441 10M in ramp gen cct o/c or int | 14-09-04 |
NEI | 11AK08 | HT low at 85v | R813 hi res | 14-09-04 |
NEI | 11AK08 | Line pairing & top stretched | R709 470R high res or o/c | 14-09-04 |
NEI | 11AK08 | Lines across pic | C704 0µ1 o/c | 14-09-04 |
NEI | 11AK08 | Low gain, noisy pic | C428 1µ 50v o/c pin 48 IC401 | 14-09-04 |
NEI | 11AK08 | No colour - may be int | Check IC401 (low sat volts pin 26), X401 4.43Mhz Xtal, C420 18pF, R437 100k, C418 0µ1 & C419 4n7 | 14-09-04 |
NEI | 11AK08 | No video - OSD OK - stuck in AV mode | Q404 BC548B leaky & check for shorts pin 12 IC501 & chassis | 14-09-04 |
NEI | 11AK08 | Pic blanks aft several hours | C707 100µ 63v leaky or fitted incorrectly | 14-09-04 |
NEI | 11AK08 | Pic shifted upwards | C706 1000 35v scan coupling cap leaky | 14-09-04 |
NEI | 11AK08 | Slow tripping | VR801 o/c & check D809, R804/805 & IC801 | 14-09-04 |
NEI | 11AK08 | Sound - arcing noise from speaker | IC401 | 14-09-04 |
NEI | 11AK08 | Sound int | C364 100nF shorting to link between pins 2 & 8 IC305 | 14-09-04 |
NEI | 11AK08 | St/by only | If IC501 pin 41 changes check Q802/803/804/805, D840/841 1N4148 leaky, IC802 s/c | 14-09-04 |
NEI | 11AK08 | Sync poor or absent | C408 47nF leaky pin 15 jungle chip IC401 | 14-09-04 |
NEI | 11AK08//10 | Servicing 11AK08 & 11AK10 | See TV mag Feb 2000 | 14-09-04 |