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Sony Repair Tips




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Search: sony
Results: 20100
Make Model Symptom Problem Solution By
SONY KV2145R
No sound, broken lead on output transformer No sound. inspection revealed broken wire from secondaryof sound output transformer to solder lug, right at the lug.
SONY KV2145R
No vhf, bt981 prescaler No vhf low and high band, very intermittent.
SONY KV1945R
Incorrect tuning function, replaced ic004 Only numbers 1 or 2 can be addressed on tv by hand unit.operation on channel selection manually is ok. i found pin 28 of ic004has 10vdc on it at all times. waveforms on pin 37 were normal but theamplitude of waveforms at pin 14 were very low with all n
SONY KV1914
No picture Unit would blank out approx. after 1/2 hour, sound stillnormal. by turning set off for a while and turning it back on, the unitwould again work for a shorter period of time and blank out. found thatby freezing vertical output ic unit would function nor
SONY KV1546R
Set would not turn off, replaced rl001 Set would not turn off when power switch pressed. brightnesslevel would drop but would not turn completely off - intermittent problem.
SONY KV1545RS
Short range remote operation, replaced d1 Customer complained of short range, approx. 12 feet.
SONY KV1543R
No tuning memory, replaced c047 Customer pulled ac plug from wall outlet during electricalstorms, had to reprogram tuner (lost its memory). c047 a 100pf capacitoron the write/erase line (pin 6 of ic034, cx761) defective allowing pinto remain high after ac disconnection.
SONY KV1221R
Snow picture, replaced c038 Every 2 weeks picture would go to snow and remain in onechannel position. tuning functions totally inoperative and manual channelselection would not work. volume up and down functions ok. clock osc.waveform wrong also voltage at q034 base 0v should be
SONY KV2645R
Audio hiss noise, replaced ic401 Left channel of matrixed side had distortion plus somebackground hiss, right side sounded good. disrotion showed up mainlyon music, and background noise only showed up when no voice or musiccame from tv.
SONY KV1945R
Dead, replaced fbt and others Set had a bad flyback causing multiple problems such asshorted horizontal output transistor and b+ regulator.
SONY KV1913
Picture noise This unit exhibited several faint vertical bars on the leftside and middle of raster.
SONY KV1714
Picture noise Retrace lines in the screen. found r721 and r722 reversedin circuit.
SONY KV1545R
No manual or remote functions, replaced x002 No manual or remote functions. no 12 volt on pin 12, ic004.clock frequency was correct but only 0.5vpp. voltage on pins 1 and 42 ofic004 was the same on both pins, 0.6v.
SONY KV1543R
Channel indicators not lit, leakage between ic032/pin 1 & 20 Unit would not come on with all channel indicators lit.unable to select channels. once in a while unit would function properly.
SONY KV2644R
No operation, replaced l001 Although remote and manual controls did not work, unit wouldcome on with master on/off switch (intermittently).
SONY KV1945R
Dim picture, replaced r555 and d513 Dim picture. found no 950v on c board, r555 open and carbonpath between pins 1 and 2 in crt socket.
SONY KV1945R
Shut down, replaced relay rl001 Set plays several hours, then shuts off. remote control ormanual on-off buttons would not turn the set back on for several seconds.relay would click every time the set on/off button was pushed.
SONY KV1913
Picture distortion Vertical flutter at top one-half inch of picture, increasingvertical size control would eliminate this and fill out picture, butretrace lines would appear. vertical output waveform at pin 3 of ic502was of sufficient amplitude, but had horizontal signal
SONY KV1913
Channels no lock No reception for 30 minutes when set is started from a coldstart. then channel change was very slow. channel did not changeinstantly but slowly over a period of 5 to 10 seconds.
SONY KV1751
Picture distortion Piecrusting in picture.