| Make | Model | Problem | Solution | Date |
| | | |
| Found: 179
|
| Alba | 4859 11AK19 | No line drive at sw on (150v HT to LOPTr) | Dis'd D814/815 (+14 & -14v audio o/p ic supply diodes). Replacing TDA2615 aud o/p chip resulted in bright white raster & flickering LED; R914 47R 200v feed to IC901 TDA6107Q on crt base o/c & IC s/c | 14-09-04 |
| Alba | CTV4808 11AK19 | Comes on in st/by then if button pressed blinks pale green | Check R914 47R safety res & TDA6108JK | 14-09-04 |
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| Alba | CTV4808 11AK19E3 | No tuning but tuning bar moves | Q501 BF240 - BC548C works in this position | 14-09-04 |
| Alba | CTV4851 11AK19 | Dead - no LED display | R806 22k o/c | 14-09-04 |
| Alba | CTV4851 11AK19B-1 | Dead with 0nly 300v pri HT | Opto coupler faulty - though more faults may be present (esp if it went off in a thunderstorm) | 14-09-04 |
| Alba | CTV4859 11AK10-17 | Dead | Q801 (BUZ77B), R809 (0.47R), IC801 (TDA4605-3), C817 (1µF 63v), R805 (330k 0.5w), D808 (BA159). | 14-09-04 |
| Alba | CTV6682 11AK12 | green flyback lines can be seen on the picture, otherwise is Okish | no green output from TDA8362A(2Y), the IC is u/s - caused by intermittently arcing LOPTx (HR6465). | 14-09-04 |
| Amstrad | 3121N 11AK12 | St/by only - psu o/ps present except 12 & 8v | IC301 (CTV352/V1.4) and IC302 (ST24C02AB1). | 14-09-04 |
| Amstrad | CTV3121NF 11AK12 | No response from R/C although R/C is outputting a signal | Was still faulty handset - dry joints IC giving wrong output codes | 14-09-04 |
| Amstrad | WSTV7328NF 11AK19 | Narrow with E-W bowing | R629 10R o/c - check for dry joints on caps | 14-09-04 |
| Bush | 11AK12 | Field collapse | R818 22K in the 33V supply (yes the 33V supply). After changing this you will probably have a blank raster so change C707 100MFD in the field flyback circuit. | 14-09-04 |
| Bush | 11AK12-9 | Width & E/W inop | R661 100k | 14-09-04 |
| Bush | 11AK19 | No start up | No line drive - check coil in emitter of LOPTr for burn up (not shown on cct) | 14-09-04 |
| Bush | 11AK19 | Service Mode access | Enter install mode then press "4, 7, 2, 5" | 14-09-04 |
| Bush | 11AK19-B1 | Field collapse | After trying new chip TDA8351 which made no diff, fault traced to D606 BA157 which checked ok out of cct | 14-09-04 |
| Bush | 1485N AK19 | Int off aft 5 - 10 mins | Check for dry joints on regs - on big heatsink | 14-09-04 |
| Bush | 1495N 11AK19 | Dead | R806 22k 1w safety res o/c | 14-09-04 |
| Bush | 2028T (11AK10) etc | Standby is initiated when "Vol +" or "Vol -" selected | Corrupted memory IC502 - password reqd when replacing which requires a procedure too long to list here. See Serge's email on subject dated 26/10/00 | 14-09-04 |
| Bush | 2028T 11AK10-15 | Dead | Replace R809 (.47ohm) o/c-Q801(BUZ77B) s/c-R805 (330k) o/c - R821 (2.2ohm) surge limit o/c. | 14-09-04 |
| Bush | 2031 11AK19-5 | Dead with no power led | HT only 60v - dis'd R823 to opto got HT up to 113v but with poor reg - C829 smoothing cap faulty | 14-09-04 |
| Bush | 2068NTX 11AK10-17 | Dead with Q801 P3NA61 Power FET s/c | Replaced with BUZ90 or IRFBC40, TDA4605-2, R809 0R47 1/2w safety res, 330k & R803 820k | 14-09-04 |
| Bush | 2571NTX 11AK19 | Blank raster, no sound, ok thro' SCART & OSD OK | IC807 7805 regulator,supply was down to 2.5V | 14-09-04 |
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| Bush | 2571NTX 11AK19 | Bright green pic with fb lines | TDA108JF on crt base | 14-09-04 |
| Bush | 2571NTX 11AK19 | Field collapse | Check R704 100R safety res, if o/c change also TDA8351 FOP chip. Check 15v supply pin 3 IC701 if missing check comps from pin 6 LOPTx - D606 BA157 o/c | 14-09-04 |
| Bush | 2571NTX 11AK19 | No pic, sound /text / menu and on screen graphics all work ok | Q500 and Q504 in metal can burnt out. No reason found | 14-09-04 |
| Bush | 2571NTX 11AK19 | St/by only with psu ticking - HT about 50% of normal | Replace R866 and R867 (0.33 ohms) psu secondary LT supplies | 14-09-04 |
| Bush | 2571NTX 11AK19 | Tripping psu | IC301 TDA6108JF(RGB chip) & R914 (1R) o/c both on CRT base & check LOPTr | 14-09-04 |
| Bush | 2571NTX 11AK19E3 | Narrow pic with no E-W corr adj | R629 safety res 2R7 1/2w feeding BUK444 o/c - C630 dry joint caused it | 14-09-04 |
| Bush | 2863NTX 11AK19 | Dead - LOPTr s/c | When replaced runs hot with bottom cogging - dry joint on link J613 | 14-09-04 |
| Bush | 2863NTX 11AK19E3 | Dead with HT of 16v - ok on dummy load | Supply to 5v reg missing - R867 0R33 o/c | 14-09-04 |