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Electronic appliance repair tips database - TV (LCD,TFT,Plasma,Digital), Monitor, VCR, DVD recorder and player, Digital camera, Audio equipment, Microwave ovens, Phone systems, Computer repair
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
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Last SM download : Sony ICF-2001
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