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Sony Repair Tips




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Search: sony
Results: 20100
Make Model Symptom Problem Solution By
SONY KV8000
Poor h sync Set displayed poor horizontal sync.
SONY KV1945R
Color distortion, replace ic301 No blue, yellow picture. base voltage at q701 was 0 volts.output at pin 28 at ic301 0 volts, input to ic good.
SONY KV1913
No picture Loss of vertical deflection.
SONY KV2643R
Shut down, removed l810 This unit would shut down by itself. the picture wasexpanded in size (a lot of overscan). the hv was 3kv lower.
SONY KV2643R
Sound no mute during change, replaced q042 Sound would not mute during channel change. checked pin #13of ic032 positive pulse was present during channel change, therefore,q042 was suspected.
SONY KV2643R
Clock display dims, replaced display Clock display dims when touched by hand. display flickers when someone walks by tv.
SONY KV2601
No color, replaced shorted cv301 After about 2-3 minutes of playing time color disappeared.found cv301 actually physically shorted to 0Ω.
SONY KV2601
No uhf, replaced q203 During programming unit would skip uhf band. 12v b+ was low(10.5v), q203 was bad.
SONY KP5000
Incorrect function for tuning, q2211 leaky During programming unit would not stop on active channels in one direction from low to high.
SONY KV2644R
No tuning lock, replaced c219 Would not lock on to any channel in program. aft voltage pin#10, ic201 down to 0.4v.
SONY KV2643R
Channel drift, replaced ic2003 Set would drift off channel during operation. found ic2003(display memory) apparently loading control ic and changing pwm voltage.
SONY KV2643R
Retrace lines, broken land on c board Servicer informed me of a problem where the picture would benormal and then get brighter and go into retrace and then back to normal.then it again would repeat itself.
SONY KV2643R
Dead, remove jw54 and others No operation above 100vac. h. voltage was at 23kv. servicerhad replaced flyback and ic501. voltage to shutdown circuit was 5.7v.removed l801, h. voltage went up to 26kv. -hq comments: we will publish updated info on this problem shortly. asfor now c
SONY KV1714
No video No video. just snow only. but if you adjust the tuningselector you can get ch. 7 and ch. 5 but if you go back to ch. 5 thesignal in ch. 7 will be erased. no -24v power supply.
SONY KV1543R
No station selection, replaced ic032 Stations wouldn't select and sound would turn up but wouldn'tgo down.
SONY KP5000
Changes channel by its self, replaced infrared sensor Unit would change channels without manual or remote activa-tion. customer indicated that remote functions would not coincide withremote hand unit when warm (this problem was intermittent).
SONY KV2643R
Retrace lines, replaced cx556 Set would gradually change from normal to retrace lines.video signal on output of cx556 changing level.
SONY KV2601
No sound, replaced ic033 This customer has a lot of static from carpets in the home.a spark jumps from her finger each time she touched the channel selectionbuttons. this time it took out ic033. the last time ic2001 failedcausing no sound. on the ic033 pin 10, ch. bias voltag
SONY KV2601
Picture drift, replaced c516 Dealer expressed concern over the fact that although thevertical was normal and the vertical hold was ok, the position where thepicture locked in was not in the mechanical center of the control infact it was to one end of the control.
SONY KV1712
Dark picture Raster very dark. chroma information present but no y signalat output of y amplifier. i found dc level at pin 14 of ic401 was veryhigh and no video here as viewed on scope. disconnecting pin 14 from pcboard restored the video signal at pin 14, ic401.