sharp DV5103H Repair Tips




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MakeModel Ch.SymptomProblem SolutionSolutionBy:
SharpDV5103H/DV5903 D3000
Chrom info out of register with lumSmall plug in non volatile memory chip IC1411 on digital PCB
SharpDV5103H Euro DS1
Slow start up with Q700 BF487 in start up cct overheatingC707 22µ 50v & C713 1µ 50v
SharpDV5103H
St/by only - LED remains red113v HT = 185v; R753 & R781 39k o/c
SharpDV5103H
Reverts to st/by at sw on113v HT high at 170v as CNX82A opto coupler faulty - also check R754 150k
SharpDV5103H
Dead with the 2A fuse and 8R2 , 7W surge limiterThe cause can be a short circuit in the chopper transformer , between the primary winding and earth.
SharpDV5103H
Dead with HT presentQ509 BC635 & Q510 BC338 in field tb leaky - also check C236/C502
SharpDV5103H
Dead with blackened mians fuse R700 surge lim res 8R2 o/c - caused by s/c chopper trfmr pri
SharpDV5103H
Dead - Ht low at 45v instead of 113vD754 6v2 zener in psu feedback loop leaky - also replace CNX82A opto coupler
SharpDV5103H
Dead - 2A fuse & 8R2 7w surge lim res o/cS/C pri chopper trfmr to earth
SharpDV5103H
Blank raster & no OSD after LOPTx replacementC612 in beam lim had burnt out