| Make | Model | Problem | Solution | Date |
| | | |
| Found: 273
|
| Akai | 2185 | Won't go into st/by | CHECK SUPPLY TO PIN 1 OPTOCOUPLER - R572 ( 470ohm ) | 14-09-04 |
| Akai | CT2185 | Reverts to st/by aft few secs from sw on | Pin 19 of micro low - R748 100k pull up res faulty | 14-09-04 |
| Akai | CT2185-10 | St/by only | dry joints psu | 14-09-04 |
| Akai | CT2585 | Dead - lop tr s/c | Dry joints & line dr tr T507 BD337-25 int causing arcing noise | 14-09-04 |
| Akai | SN71B6 TV2851 | No pic - sound/EHT present - Field blanked | RK53 3R fusible pin 3 LOPTx | 14-09-04 |
| Akai | TV2851TN | St/by only - when sw on no leds lit | RGB IC TEA5101B on crt base s/c | 14-09-04 |
| Akai | TV2851TNUK | Rainbow effect | No -12v to FOP chip - CS03 leaky & RK53 overheating | 14-09-04 |
| Alba | 4859 | Dead | Q801 2SK2750 s/c, R809 0R47 safety res o/c, check R802 100k, R805 330k, R826 100k | 14-09-04 |
| 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 | CTV4850 | Field collapse - no sound | ZD402 12v 1.3w, R422 6R2 2w & C909 47µ C910 10µ | 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 | CTV4855 | Sound o/p low tho' OSD shows ok | C202 220µ 16v sound coupling cap | 14-09-04 |
| Alba | CTV4855 (Onwa) | Low sound | C202 220µ decoupling cap AND R421 0R68 in line stage hi res (1R5) | 14-09-04 |
| Alba | CTV4855 Onwa | No sound/pic - blank raster | 5v line low at 3.6v - Q619 o/c | 14-09-04 |
| Alba | CTV4856 | Height varies & tuning comes up in wrong posn | 33v supply low at 18v - C504 0µ1 near front pcb | 14-09-04 |
| Alba | CTV4859 | Dead - no line drive - HT ok | IC401 (TDA8840) had an internal short in it dragging down the 8
volt line | 14-09-04 |
| Alba | CTV4859 | Low brightness & poor focus | Premature CRT aging | 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 |
| Bush | 1485N AK19 | Int off aft 5 - 10 mins | Check for dry joints on regs - on big heatsink | 14-09-04 |
| Bush | 2085NTX | Field & line collapse | dry joints scan coils plug (line) & IC401 fop chip TDA8170 | 14-09-04 |
| Bush | 2850/2855 | Service Mode access | Press Red & blue buttons together then P- & V+ together within 5 secs | 14-09-04 |
| Bush | 2850NTX | Dead | Dry joints scan coil plug & TEA5101 fop chip & TEA5101 on crt base | 14-09-04 |
| Bush | 2850NTX | No pic with burning smell | burn up on red wire of scan coil plug - wired direct to pcb | 14-09-04 |
| Bush | 2850NTX Schneider TV4 | Bent verticals and pulsating width (Scene Dependent) | Replace CC808 4N7 SMD primary side of PSU you will probably find that
the pcb in this area has taken some heat. | 14-09-04 |
| Bush | 2850NTX TV4 | Line collapse | Can be dry joints scan coil plug but C419 330nF 400v scan coupling cap burnt & o/c in this case | 14-09-04 |
| Bush | 2850NTX TV8 | Dead apart from led flicker at sw on | C203 47µ 250v - checked ok out of cct | 14-09-04 |
| Bush | 2850NTX-A | Dead aft brief micro activity | Micro reqs sync pulse at pin 26 within 1 sec from line to function. This was missing due to T301 BC547B in line stage leaky | 14-09-04 |
| Bush | 2850NTX-A | Line & field collapse (single dot) | Burnt line scan coils plug & TDA8170 fop chip, D402 BA157, fus res R408 o/c | 14-09-04 |
| Bush | 2850NTX-MS | slow start up - reset problem | IC101 pin 33 needs 4.8v to start up mod - add 1µ & 100k res to 5v line | 14-09-04 |