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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: 10
Sharp
DV5131
S3B
Int won't come out of st/by with LED flashing
R745 0R33 risen slightly - To adjust the B+ set R739 for 14 volts on D712
14-09-04
Sharp
DV5131
S3B
St/by only ; 5v & 12v supplies not being sw on by Q703 & Q707
Fusible R744 o/c - replacing it only restored 12v - check D732 & 733, one was nearly o/c
14-09-04
Sharp
DV5131H
S3B
Int blows Q702 chopper tr MJF18006 % mains fuse
Replace the chopper transformer (T701 type HR290N) with an HR9433 and fit MJF18008
14-09-04
Sharp
DV5131H
S3B
chassis
Tripping - LOPTr Q603 goes s/c periodically
Replace with 2SD1556, replace FB601 with coil pt no VP-CF1ROK0000 & add 1k8 1w in series with R600
14-09-04
Sharp
DV5150
S3B
Field top stretched
C712 100µ 35v in 24v supply
14-09-04
Sharp
S3B
flickering pic
BY299 D713 high fwd res
14-09-04
Sharp
S3B
low contrast with flashes
BF421 tr on crt base (auto grey scale)
14-09-04
Sharp
S3B
no pic - rushing noise from spkr
9.5v supply missing - R745 0R33 o/c
14-09-04
Sharp
S3B
Q603 lop tr 2SD1554 s/c
evidence of overheating - check drive wfm - if low change D601, 603 & 607 1N4004
14-09-04
Sharp
S3B
DV5131H
coloured lines on top
C712 100uF 35V
14-09-04
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