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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
DV5103H
Blank raster & no OSD after LOPTx replacement
C612 in beam lim had burnt out
14-09-04
Sharp
DV5103H
Dead - 2A fuse & 8R2 7w surge lim res o/c
S/C pri chopper trfmr to earth
14-09-04
Sharp
DV5103H
Dead - Ht low at 45v instead of 113v
D754 6v2 zener in psu feedback loop leaky - also replace CNX82A opto coupler
14-09-04
Sharp
DV5103H
Dead with blackened mians fuse
R700 surge lim res 8R2 o/c - caused by s/c chopper trfmr pri
14-09-04
Sharp
DV5103H
Dead with HT present
Q509 BC635 & Q510 BC338 in field tb leaky - also check C236/C502
14-09-04
Sharp
DV5103H
Dead with the 2A fuse and 8R2 , 7W surge limiter
The cause can be a short circuit in the chopper transformer , between the primary winding and earth.
14-09-04
Sharp
DV5103H
Reverts to st/by at sw on
113v HT high at 170v as CNX82A opto coupler faulty - also check R754 150k
14-09-04
Sharp
DV5103H
St/by only - LED remains red
113v HT = 185v; R753 & R781 39k o/c
14-09-04
Sharp
DV5103H
Euro DS1
Slow start up with Q700 BF487 in start up cct overheating
C707 22µ 50v & C713 1µ 50v
14-09-04
Sharp
DV5103H
/DV5903 D3000
Chrom info out of register with lum
Small plug in non volatile memory chip IC1411 on digital PCB
14-09-04
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