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Repair tips

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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