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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: 9
Bush
2002
Dead
ZD401 12v 1w zener, R419 5R6 3w & 2 caps in psu - HT = 115v
14-09-04
Bush
2002
Onwa
NO 12v FROM LINE STAGE
R421 ( 0.68ohm ) , R419 ( 5.6ohm ) , ZD401 ( BZX61-C12 ) C909 & C919 both ( 47uF ) 63V
14-09-04
Bush
2002
A
low contrast
R316 100k o/c
14-09-04
GEC
2002
H
Raster - bright screen & flyback lines.
R258 o/c.
14-09-04
Hikona
RM
2002
Crackle on sound unaffected by vol setting
check 47µ tant coupling cap under IF screening can
14-09-04
Hikona
RM
2002
No sound
IC101 TA7680 Audio o/p chip pin 1 (vol cont) should read 5.8v at min vol & 0v at max. Was not varying - Q201 faulty - BC238 does
14-09-04
Hikona
RM
2002
No sound.
Q201 ( BC238 ) but diff legout , TA7680
14-09-04
Sharp
C
2002
Dead.
STR4090.
14-09-04
Sharp
C
2002
Standby - no switch on some times from s/by.
R717 ( 390k ) , C720 , R712 , last IC701.
14-09-04
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