Make | Model | Problem | Solution | Date |
| | | |
Found: 131
|
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 |
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 |
Amstrad | WSTV7328NF 11AK19 | Narrow with E-W bowing | R629 10R o/c - check for dry joints on caps | 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 | 1495N 11AK19 | Dead | R806 22k 1w safety res 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 | 2571NTX 11AK19 | Blank raster, no sound, ok thro' SCART & OSD OK | IC807 7805 regulator,supply was down to 2.5V | 14-09-04 |
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 |
Bush | 2867NTX 11AK19 | Int off with smell of burning | dry joints chopper trfmr | 14-09-04 |
Bush | 2867NTX 11AK19 | No line drive | R866 0R33 in series with 14v supply o/c (not shown on cct diag) | 14-09-04 |
Bush | 2867NTX 11AK19 | Pic takes long time to appear - quicker if A1 adjusted | Check C608 10µ 250v reservoir cap for RGB stages by edge near LOPTx | 14-09-04 |
Bush | 2868NTX 11AK19 | Child Lock removal | go to the menu and toggle the child lock between on/off | 14-09-04 |
Bush | 2868NTX 11AK19 | Dead | R806 22k o/c also R825 2M2 o/c | 14-09-04 |
Bush | 2868NTX 11AK19 | Dead with LOPTr s/c | Check conns to scan coil plug - if overheated, wire directly | 14-09-04 |
Bush | 2868NTX 11AK19 | E/W correction faulty | Q683 FET BUK444 faulty | 14-09-04 |
Bush | 2868NTX 11AK19 | Entering service mode | Select "Install" then key in "4, 7, 2 & 5" via hset | 14-09-04 |
Bush | 2868NTX 11AK19 | No pic - sound ok - pic will appear briefly when adj A1 | C604 47nF 63V s/c in beam current | 14-09-04 |
Bush | 2868NTX 11AK19-5 | E/W faulty | C630 470nF | 14-09-04 |