Dicas Reparação SONY
Modelo - Chassis
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | CDXA10 | SYSTEM CONTROL WOULD LOCK UP | Unit's system control would LOCK-UP with volume on high.No controls operative. | ||
| Sony | SLHF1000 | ROTARY TRANSFORMER | Problem indicated a defective video head disc. This wasreplaced but did not solve the problem. Additional tests pointed out adefective head drum ass'y. | ||
| Sony | KV20HFR | SHUTDOWN, REPLACE REG IC681 | After warm up 20 min. unit would shut down (power relay wouldopen contacts). Shorted return side of relay coil to ground and measuredbase of Q602 found 0.2VDC, traced problem B+ regulator, found Pin 1 ofDM-36 reading 0.6VDC S/B 1.4VDC. | ||
| Sony | CDP510 | IRREGULAR DISC ROTATION | Unit would not play discs. After pressing PLAY, disc wouldspin with loud, irregular thumping noise. | ||
| Sony | D3 | POOR TRACKING | Unit does not track very well. Eye pattern looks very poor. | ||
| Sony | KV2080R | HI PITCH SQUEALING, REPLACE L1507 | L1507 causing an objectionable Hi pitch squeal. | ||
| Sony | SLHFT7 | NOT RECORDING AUDIO | Not recording audio on longitudinal track. | ||
| Sony | KV1948R | DEAD, REPLACE D631 AND R603 | R603 fails after one month of operation due to a missing D631on E-1 board from the factory. This is the second unit with this problem. | ||
| Sony | CDP110 | ROLLER GUIDE FOR CHUCKING ARM ASSY COMES OFF | Roller guide for chucking arm assy comes off. This rolleris a brown one. | ||
| Sony | CDP510 | ROLLER GUIDE FOR CHUCKING ARM ASSY COMES OFF | Roller guide for chucking arm assy comes off. This roller isbrown one. | ||
| Sony | WMF77 | INCORRECT PART NO FOR FWD IDLER ASSY | P/N for Ref. 211 Page 26 WM-F77 Service Manual is wrong.P/N X-3335-724-1 is no given, but this same number is also used asRef. 233 same page called Chassis Assy, Mechanism. Need correct P/N forRef. 211 Idler Assy. | ||
| Sony | KPR4150 | NO RASTER, NO DISPLAY, SLEEP LIGHT ON | Set would come on with Hi voltage, no raster, no display,sleep light on. Found 15VDC missing, trouble was traced to L8, 5.6uHchoke opened. | ||
| Sony | KV1946R | DEAD, REPLACED C556 | Unit was dead, with an external DC source, turned on oscilla-tor, connected variac, brought it up to 70VAC, output of oscillator wasgood but to the base of driver distorted. Found C556 leaky. (Also thehorizontal output had shorted and fuse burned.) | ||
| Sony | PCM701ES | DEAD UNIT | Two fuses and transistor bad. Replaced parts. All functionsnormal. Set unit aside to run. After approx. 3 hrs audio failed thoughmeters still worked. Found transistor had gone bad and collector shortedbut on removal of transistor found trace was sti | ||
| Sony | SL300 | BROKEN S GEAR | Unit came in with broken gear. Installed replacement, whichalso broke. -HQ COMMENTS: I am sending you a new S gear kit. This parts kit will bestocked in the future. |