| Make | Model | Problem | Solution | Date |
| | | |
| Found: 626
|
| Bush | WS6672 | Blank white raster with fback lines aft replacing LOPTr | No 220v to RGB as RD12 15R on main pcb to left of LOPTx o/c due to previous dry joint on scan coils had blown LOPTr | 14-09-04 |
| Bush | WS6672 | Dead & tripping | LOPTr BU508SAF s/c & CD08 560nF 250v o/c in E/W mod | 14-09-04 |
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| Bush | WS6672 | Dead with burning smell | Mains sw burnt - can use Wharfedale sw pt no MS32 from CHS | 14-09-04 |
| Bush | WS6672 | E/W burn up | RV38 22R o/c & BY228 E/W Diode s/c | 14-09-04 |
| Bush | WS6673 11AK19P5 | Dead - check for dry joints | Also replaced LOPTr which then produced 1" line scan - D622 BY228 leaky & R629 2R7 o/c. There's a mod for psu (11DYC19P) to fit heatsink for diode that burns up | 14-09-04 |
| Bush | WS6673 11AK19P5 | Dead - D823 blown (not shown on cct) | When replaced still faulty, IC802 MC44604P chopper chip u/s - also check FET chopper Tr | 14-09-04 |
| Bush | WS6673 11AK37 | Width excessive | C622 12nF 350v s/c | 14-09-04 |
| Bush | WS6673SIL | Trips with LOPTr 2SD2579 s/c | Check dry joints C626 flyback cap & measure its value 12nF 2kv | 14-09-04 |
| Bush | WS6674 | Tuning absent - no tuning volts | RP19 15k 1w o/c | 14-09-04 |
| Bush | WS6674 PT92 | Dead - no o/p from psu or LED | RP06 3M9 1/4w pin 11 chopper IC o/c | 14-09-04 |
| Bush | WS7671 | No pic(blank raster when A1 advanced) - sound ok | TDA6107Q faulty (used TDA6108 in lieu) | 14-09-04 |
| Bush | WS7671 11AK19P4 | Dead - off with a bang | IC802 MC44604P, IC801 CQY80NG CNX82 OR SEME TYPE OPT403 OPTOCOUPLER, Q802 2SK2545 MTP6N60E, R822 22K 3W, D807 RL207 BA159, D826 BA159, D827 BA159, D824 MR852 BYW98/200V | 14-09-04 |
| Bush | WS7673 | E/W faulty | Dry joints C630 caused R629 44R to go o/c | 14-09-04 |
| Bush | WS7673SIL | Dead | D002 dry joints, chopper FET s/c, L801 o/c | 14-09-04 |
| Bush | WST Professional 4400 series | Service Mode access | hold menu button while turning CTV on until the red LED lights up. Release the menu button and press standby. | 14-09-04 |
| Bush | WST66 | Dead - LOPTr S2000AF-1 s/c | When replaced, loud crack & went the same way as predecessor - LOPTx arcing thro pinhole | 14-09-04 |
| Bush | WST66 28ZKF | Trips once then dead - LOPTr S2000AF1 s/c | LOPTx cause - FAT30564 ?19.38 SEME | 14-09-04 |
| Bush | WST66 4400 | Dead - LEDs ok & EHT rustle | No 5v supply pin 39 & 44 of ICR1 & TP6 - BD441 faulty | 14-09-04 |
| Bush | WST66W/S | Int start up; blank screen; no R/C operation | TP6 BD441 in st/by 5v supply - check heatsink clip secure | 14-09-04 |
| Bush | Z718 | Channel selector stuck on prog. | ET6016 , 1R1106. | 14-09-04 |
| Bush | Z718 | East west - poor & bent verticals. | 4VT16. | 14-09-04 |
| Bush | Z718 | LOPTX keeps going. | 5C3 ( 0u 01f ) | 14-09-04 |
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| Bush | Z718 | No signals on log.r channels. | ET6016 | 14-09-04 |
| Bush | Z718 | Tuning - drift. | 9Z1.6 | 14-09-04 |
| Bush etc | 11AK19 | Dead - no st/by led | IC 801 opto-isolator.(CQY80NG) | 14-09-04 |
| Bush, Alba, etc | 11AK19 | blank raster with red green blue flyback lines at the top of pic | replace R 704 (marked R702 on cct) 100R in frame output stage. | 14-09-04 |