TV Repair: Common Faults and Solutions.
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Results: 87419
Results: 87419
Repair Guide: Common Issues and Fixes
| Brand | Model | Fault | Detailed Problem | Solution | By |
|---|---|---|---|---|---|
| SONY | EVC8U | No eject | Unit would load ok. play tape for a few seconds then stop.ff or rew would run for a short time then stop. when eject was pushed thetape would unthread, but cassette compartment would not come up. the modeswitch was not running, it was staying in the l | ||
| SONY | ITA500 | Low volume on ogm and icm signal to telephone line | Customer complains that ogm and icm volume is low and cannotbe heard if phone line quality is a little low. also, mentioned he isdissatisfied with seizing line with 1 1/2 rings. -hq comments: a modification is presently being investigated to increaseit | ||
| SONY | EVS700U | Intermittently take up after pause released | Item #371 on page 155 of s/m rubbing against a piece ofbad molding beneath it. | ||
| SONY | D7S | Disc will not spin | The unit would not spin the disc. this was caused by thethrust screw coming loose and allowing the rotor to bind. readjustmentresolved the problem. this is becoming a common problem with this unit.depending on how far out of adjustment the thrust scre | ||
| SONY | CCDV8 | No rf output from modulator | All functions worked except there was no rf from the rfmodulator. audio and video lines worked fine. | ||
| SONY | KV1944R | Snowy pix, no sound, replaced ic2006 | Has snowy picture, no sound, no display. power on/off ok,could not tune channels. | ||
| SONY | STRVX750 | Shutdown | Unit would come on for a few seconds and shut off. this wasintermittently. found with signwave input that right on out had ringingand spike on output. found r783 had changed value 39Ω. changed, sameproblem. | ||
| SONY | CCDV8 | Horizontal jitter in playback mode | Unit displayed horizontal jitter in playback mode. | ||
| SONY | CCDM8U | No eject | Capstan and drum rotate erratically during eject mode. | ||
| SONY | WM8 | Head replacement | Above head replaced with p/n 8-829-373-40. difference inphysical size prevents head chassis from returning to stop position. itis difficult to load cassette or eject it. -hq comments: a service bulletin was issued concerning this problem(tape recorder | ||
| SONY | KV8100 | Part failures | End user reports all of their units have had this capfail at least once. sometimes, the other parts in the centering circuithave failed also. -hq comments: to lessen the overcurrent stress on c519/2.2uf/160v, plsuse two 1uf/200v (p/n 1-130-157-00) capa | ||
| SONY | FD2A | Cx20159 dead | Unit came in with dead cx20159. tech replaced it and thiscauses q602 and associated components to burn up. -hq comments: since ic601, q602 are part of power supply circuit weshould first check its most suspect components before turning power on.next, | ||
| SONY | KV1952RS | Intermittently set would come on, replace x2001 | Intermittently set would come on at full volume, and have nocontrol of volume, picture, channel change, and no indicator. sometimesthere would be no sound or control of functions. found x2001 intermittingcausing the microprocessor ic2001 to lock-up. | ||
| SONY | KX2501 | No video, replaced q1903 | Set powers up with h.v. and audio. no video. q1901 gets veryhot, b+115v. measure resistance l1505 on d board to gnd, found short.q1903 shorted. | ||
| SONY | XR780 | Part no for spring 428 | Need p/n for spring #428, other part has #428 also, needspring only. -hq comments: the p/n is 3-596-509-01 which is ref. no. 427. | ||
| SONY | CFS77 | Missing part ref and illustration | Received this unit with transport apart and parts missing.see page 38 of s/m. need p/n of spring that pulls head deck down or onesuitable spring. -hq comments: ref # is 409 and p/n is 3-579-027-00. | ||
| SONY | SL2415 | Loss of picture in cue/review under vibration | Unit had intermittent loss of picture in cue and review modes.while troubleshooting unit, i noticed that by tapping on dl-1, the pixwould come and go. | ||
| SONY | KV2084R | No picture, cracked board | Unit would turn on, hi v would come up, but no pix, blackscreen. push button controls inoperative. no signal on key scan lines.sleep light on. | ||
| SONY | KV2680R | No video, hi voltage ok, reseated connector a21 | Power would come on, sound ok, no raster, no control offunctions. traced problem to ic031 on x board, no 4 meg clock on pin 16.servicer had replaced crystal and chip. no ac ref signal on pin 16 of xboard, traced signal to a21, pin 1 on a board. signal | ||
| SONY | KV2781R | Shut down, resolder hlc l-515 | Upon turning set on, the unit would immediately shut downsubbing ref voltage and sensing voltage to pins 4 and 12 on ic301, setwould still shut down. froze different section of a board. when hlcgoes as frozen set would stay on. upon unsoldering hlc, f |