Search: sony
Results: 20072
Make Model Symptom Problem Solution By
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.
SONY KV1714
No picture No picture, distorted sound. found vhf to be very snowy.
SONY KV1545R
Remote only within 10 inches, replaced q2 "n" board Remote had to be within 10 inches of tv unit to activatevarious modes. found q-2 amp on n board with base emitter leakage.
SONY KV1545R
Intermittent retrace lines in picture, replaced r722 After the unit was energized, fine retrace lines wouldappear after 5 seconds and there was no control of brightness. g2voltage would not go low enough and g1 voltage was 125v dc instead of 30vdc. wrong value resistor had been inserted in board (r722) i
SONY KV1217
Incorrect tuning operation, replaced r078 In program mode, pressing tune-up button would cause a changein address position only and could not program any channels. also, nochannels could be put into or removed from memory.
SONY KP5020
Dead Dc block assy failure (distorted waveform) dc fuses open.
SONY KP5000
Dead, replaced mica spacer under vert output transistor 2.5 amp fuse on b+ line would blow every 7 to 10 days.replacement of the fuse restored operation and hours of testing providedno clue to problem causing fuse to open. by by-passing the relay witha jumper and using a variac, increasing ac input to 130v a
SONY KV2645R
Snow picture, replaced bt981 prescaler Unit goes to snow. substituting tuner didn't cure problem.voltages around front end seems to be at spec. tried prescaler andthat solves the problem.
SONY KV2645R
Poor remote operation, replaced q1 Remote would operate intermittently and is usable up to6 feet from cabinet. q1 on head amp board noisy - collector voltage onq017 on md board was varying between 4 and 8 volts.