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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: 527
Aiwa
CX
Z
R800K
At sw on relay clicks "DEMO" displayed then dead - keeps repeating
Check 2 x 2SK2723 FETs on sound o/p heatsink
14-09-04
B & O
L
Z
5000 3766
Won't work on batt - ok on mains
Aux sw behind mains sw contacts needed resetting - make sure battery supply is adequate
14-09-04
Beko
6B
Z
190-11
Dead - psu burn up
IC901 MC44603, T901 FET P3NA60 use 2SK2545, R911 1k
14-09-04
Bush
28
Z
FK WST66
Dead set. TP2 (FET) Blown and also diode in bridge rectifier cct.
Fit new FET(I fitted a BUZ91 type instead of a P4NA80FI) and IN4007 diode in bridge cct
14-09-04
Bush
28
Z
KF Orion 4400
Dead with faulty on/off sw
Dry joints also LOPTr S2000AF s/c & LOPTx from SEME LOPTX1277 at ?18.95 Part S065621409
14-09-04
Bush
28
Z
KFWST66
Blank raster
Check TP6 BD441 5v reg, dry joints chopper trfmr
14-09-04
Bush
WST66 28
Z
KF
Trips once then dead - LOPTr S2000AF1 s/c
LOPTx cause - FAT30564 ?19.38 SEME
14-09-04
Bush
Z
718
Channel selector stuck on prog.
ET6016 , 1R1106.
14-09-04
Bush
Z
718
East west - poor & bent verticals.
4VT16.
14-09-04
Bush
Z
718
LOPTX keeps going.
5C3 ( 0u 01f )
14-09-04
Bush
Z
718
No signals on log.r channels.
ET6016
14-09-04
Bush
Z
718
Tuning - drift.
9Z1.6
14-09-04
Crown
CT
Z
9002R
st/by only
Pri HT at chopper tr - R320 120k 1/4w in psu o/c
14-09-04
Crown
CT
Z
9009R
E/W fault & width varies
Scan coils
14-09-04
De Graff
D59H
Z
5
Dead - both green leds flashing
Low serial data line at micro. When serial data pin of MC44130P sound proc chip dis'd set came on without sound - sound chip proc u/s
14-09-04
Fidelity
Z
X1410
Dead
D21 SC BY299
14-09-04
Fidelity
Z
X1410
POOR CONTRAST , CONTROL DOES VERY LITTLE
C96 0.1uF 50v ( BETWEEN HEATSINK AND LOPT )
14-09-04
Fidelity
Z
X1410
Weak contrast with no control
C96 0µ1 50v in beam lim
14-09-04
Fidelity
Z
X1415
Dead - BUT11A s/c.
Replace IC8 ( UC3844N ) , check R110 , R115.
14-09-04
Fidelity
Z
X1415
Dead - fuse Ok.
Drys or broken print at TR4.
14-09-04
Fidelity
Z
X1415
Int frame collapse
D25 INT OC
14-09-04
Fidelity
Z
X1415
No sound or raster - Ht Ok.
TR5 ( BC558 )
14-09-04
Fidelity
Z
X1415
Will not store channels.
Select channel number with remote after pressing store button.
14-09-04
Fidelity
Z
X2000
Channels - will not go to ch 3.
IC ML923 tuning chip.
14-09-04
Fidelity
Z
X2000
Dark picture.
C412 ( 100pf ) leaky.
14-09-04
Fidelity
Z
X2000
dead
Pulsing 7v at ZD5 12v zener; R801 18k 8w o/c
14-09-04
Fidelity
Z
X2000
Dead - blowing chopper transistor.
R826 ( 39R ) goes high.
14-09-04
Fidelity
Z
X2000
Dead - fuse's ok.
Droper R801 ( 18k ) o/c , chopper transistor , D24 ( RGP15J )
14-09-04
Fidelity
Z
X2000
Dead - tripping.
IC TDA2581.
14-09-04
Fidelity
Z
X2000
Frame - foldover & lack of height.
C706.
14-09-04
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