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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

MakeModelProblemSolutionDate
Found: 11
SHARP51DT-25HFRAME COLLAPSE WITH NO SOUNDCHECK Q500 BC32814-09-04
Sharp51DT-25HLack of height, no vid & tuning drift at sw onNV memory mode - fit 2 x zeners D510/511 pt no EX0404BM22, fit coil Pt no VP-CF120K0000 in place of link J122 & fit another zener D403 pt no RH-EX0412BMZZ. (Cct ref printed on pcb)14-09-04

Sharp51DT-25HLines across screen when coldC604 220u 10v14-09-04
Sharp51DT-25H CA1Stuck in st/by with motorboating from spkrC712 220µ 16v in 10v supply almost o/c14-09-04
Sharp51DT25HDead - no st/byR705 560k o/c, also replaced R704 560k14-09-04
Sharp51DT25HGoing off tune picture blanks etcC715 470mfd 10v o/c14-09-04
Sharp51DT25Hint blank raster, lack of height, off tuneFit D511 & 512 3v6 zeners in marked places next to IC201, fit D403 by plug K - replace link 122 in 5v supply with 12µ coil.14-09-04
Sharp51DT25HInt lack of height or off tune when 1st sw on - ok at subsequent sw onSharp mod - add 3.6v zener between pin 63 IC201(cathode) & chassis; add another 3v6 zener pin 64 & chassis(cath to chip). Substitute link J122 with 12uH coil pt no VP-CF120K0000; Add 7v5 zener pin 30 (cath) & chassis. Check CRT final anode for cleanliness14-09-04
SharpCA1 51DT25HdeadC713 , D710 (RHDX0577BMZZ) and Q701 S2055N14-09-04
SharpCA1 51DT25Hdeadno volts to micro, replace Q704 (RHTX0130BMZZ)14-09-04
SharpCA1 51DT25Hframe collapse, no sound, won't go to stbyno 10V line, replace Q500 BC32814-09-04
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