| Make | Model | Problem | Solution | Date |
| | | |
| Found: 12
|
| Wharfedale | 350 | Dead | FET- used BZ90, R4 270k hi res, R9 47R burnt up - also TDA4605-5 is possibly damaged | 14-09-04 |
| Wharfedale | 550 | Dead - no line drive | replace Q580 (C1573A) and R609 1K 4W | 14-09-04 |
| Wharfedale | 550 | Field shifted down after burnt LOPTx replaced | Replace RD06 10k & RD17 4K7 (burnt) & adj in serv mode (in vault) | 14-09-04 |
| Wharfedale | 550 | Off with burning smell | C599 2n2 high volts disc ceramic cap in LOP burnt | 14-09-04 |
| Wharfedale | 550 | Pic absent - sound ok | R609 1k 5w o/c & Q580 2SC1537 line dr tr leaky | 14-09-04 |
| Wharfedale | 550 | St/by only - no line drive | Q580 (2SC1573A line driver) equiv 2SC3468 (Seme) - also replace LOPTr BU508AF | 14-09-04 |
| Wharfedale | 550 | Width lacking & no E-W | RD18 ( 5K6 1w safety) o/c which was caused by CD21 ( 470 or 680nF 250v ) being O/C to print | 14-09-04 |
| Wharfedale | 550FTB | SCART I/p has no sync - sound ok | TDA8361A replaced & resolder scart | 14-09-04 |
| Wharfedale | 550S | Dead | On/off sw burnt out & replaced ID50 TDA8351- dry jointed & faulty; B+ = 145v | 14-09-04 |
| Wharfedale | 550S | LOPTx burning | CHS part no ALB924 | 14-09-04 |
|
|
| Wharfedale | M8 | Dead | LOPTr s/c, RV38 2R2 fusible hi res or o/c, caused by dry joint LD01 | 14-09-04 |
| Wharfedale | M8 Daewoo PT92 | Dead | LOPTr s/c, RV38 2R2 fusible o/c or hi res (behind heatsink at back of LOPTx)caused by dry joint on LD01 (often hidden under glue by LOPTx) | 14-09-04 |