Sony TV Repair: Common Faults and Solutions.
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Results: 20067
Results: 20067
Sony Repair Guide: Common Issues and Fixes
| Brand | Model | Fault | Detailed Problem | Solution | By |
|---|---|---|---|---|---|
| SONY | KV2647R | Jail bars on the screen | This unit had very faint jail bars on the left side ofpicture. d250 zener voltage - 13.21 volts. 12 volt line - 12.61 volts. | ||
| SONY | KV2644R | Intermittent time display, replaced neon tube nd3051 | Time indicator display would go out intermittently. found bytapping the neon tube when the set was cold, i could cause the problem tohappen. but after the set warmed up, could not produce the problem. | ||
| SONY | KV2643R | Jail bars on the screen, replaced c539 | This unit had jail bars across the screen. | ||
| SONY | KV1954R | No turn off, replace ic001 | Dealer noticed he could not turn off the set, which was ondisplay. none of the other functions worked either. after discussingwith the dealer i suspect failure was caused by static electricity. | ||
| SONY | KV1954R | No audio, replace reg ic601 | Not audio. | ||
| SONY | KV1953RS | Bad reception, replace band sw ic002 | This unit did not have the proper band switching voltages.we found the input to ic002 correct but the output was incorrect. | ||
| SONY | KV1952RS | Picture distortion, replace ic003 | The frequency would change intermittently. you could freezeic005 on my board and then it would look up. pin 4 of ic003 on my board has an incorrect voltage. | ||
| SONY | KV1952RS | Snowy picture, c537 shorted | Snowy picture on all channels. worse on low band. found-30v line to be missing, i.e. 0v. | ||
| SONY | KV1952RS | Snowy picture, replace ic005 | Snowy picture. no vc. this unit had output from the localoscillator but was not being divided down in the prescaler. there was nooutput at tp61. we found ic005 - prescaler/pll ic to be defective. | ||
| SONY | KV1952R | Dead, d601 open | No b+ regulation. found one rectifier in d601 opened (noresistance reading). | ||
| SONY | KV1948R | Brightness change, cable signal problem | Going to or going from ch. 13, the brightness will change. | ||
| SONY | KV1947R | Snowy picture, replace pll ic005 | Unit does not tune - only snow. no pulse output from pllchip ic005 into active filter. | ||
| SONY | KV1947R | Intermittent color, l342 | This set had intermittent color from date of purchase.tapping on a board would cause color to come and go. following colorsignal path with scope revealed the loss of color at output of l342.in checking this coil withΩmeter, i verified that in fact, t | ||
| SONY | KV1946R | No vertical deflection, replace c526 | No vertical sweep. there was no sign of a sync pulse atpin 19, ic501. dc voltage was ok at this point. sync pulse was presentat pin 21, ic501. found c526 to be leaky. | ||
| SONY | KV1946R | Poor vertical deflection, replace c524 | This unit had only about 2 inches of vertical deflection. wefound the voltage at pin 13/ic501 to be very low (0.8v). output from thedriver was also low. we found c524 to be leaky. this is an importantpart of the vertical sawtooth generator. | ||
| SONY | KV1945RS | No picture, replaced ic006 | Unit fails to tune or show any numeric display on fluorescenttube - just snow on screen. servicer replaced microprocessor. lines forreset constantly high, ic006 bad - actually labelled ic004 on that model. | ||
| SONY | KV1941R | High freq. noise in audio and video, replaced ic2101 | This unit had a high frequency noise in both the audio andvideo. the tuner was locked up and all the neons were lit. we trackedthe problem to a defective decoder ic in the remote. this was a veryunusual problem as the noise was present everywhere and | ||
| SONY | KV1743R | Shut down | This unit immediately went into hv shutdown. at first theproblem appeared to be a power supply/shutdown type of problem. howeverby holding pin 12/ic501 low with a power supply and running the ac up ona variac, it became apparent that the shutdown was b | ||
| SONY | KV1545RS | Intermittent jitter in picture, replaced r235 | This set had a history of intermittent pulling in the pictureand also vertical jitter. inspection of waveform at output of videodetector was fine. the waveform at base of video amplifier (q202) wasexactly like the waveform at its emitter, i.e. no ampli | ||
| SONY | KV1545RS | No tuning function, jumper jw1 not connected | No tuning. no fluorescent display of channel, tuner appearsdead. |