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Sony Repair Tips




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Search: sony
Results: 20073
Make Model Symptom Problem Solution By
SONY SLV780HF
Squeel noise when drum is rotating Squeel noise is produced when the drum is rotating
SONY SLV770HF
R132 wrong value on schematic and parts. In the process of repairing unit located q132 defective but also measured r132 and found ti to be 390Ω.
SONY SLV740HF
Unusual mechanical motions due to timing Self timing procedure not found in service manual
SONY SLV740HF
Does not load cassette - resoldered ic201 Vcr powers up but cassette cannot be loaded. the cassette in/rec. proof switch was inproperly activated (opened) when cassette was inserted. microprocessor vital voltages were normal, yet, motor did not activate.
SONY SLV740HF
No record ctl, picture blanks out - resold pin13 of ic101 Unit plays back pre recorded tapes but not it's own recording. checked record ctl missing at plug cn101, pin 3. checked pin 13 of ic for control signal, absent. signal present at pin 94 of ic201. pin 13 of ic101
SONY SLV740HF
Squeel noise when drum is rotating Squeel noise is produced when the drum is rotating
SONY SLV676
No rf output in sp/ep - replace ic2 on hf9 board Missing head output in sp & ep looks like bad heads.
SONY SLV640HF
Squeel noise when drum is rotating Squeel noise is produced when the drum is rotating
SONY KV32XBR70
Tuner takes too long to lock on channel, replaced d102 The tuner took too long to lock on to the channel. found the h sync input to the cpu ic101/pin 21 to be only 3.8vpp.
SONY KV32XBR25
Shut down caused by ic-1401 Unit shuts down, shorted ic-1401.
SONY KV29XBR85
Picture shrunk vertically,no memory, replaced d7009 Set came in with picture reduced from top, keystoen shaped.enterend service modek, changed setting to bring pic back to noarmal .write settings to memory. set would function normally. removed power,problem re-appeared, new settings had not been retaine
SONY KV27XBR10
No raster or audio, replaced d251 on the x1 board Blank screen accompanied by loss of audio measuremtnd dctaken with unit not functioning.ic301, p27 =.5v, p47=9v, p48=1.1v, p21=3.9v, p20=.2v, p24=2v p23=3.8vic500 p1=2v,p2=12.9v,p3=17v, p5= 1.5v, p6=12v, p4=17vq50v 3 =-17.7v, c=24.5v, b =17.3vd507 catho
SONY KV27V55
Distortioin on left channel, replaced d407 Distortion on left channel, while looking for this problem ifound 2 diodes, d406 and d407, not listed in the service manual part listor the schematic. one of them shorted.
SONY KV27V15
No audio on aa1 chassis, replaced "m" board. No audio volume at maximum and could not control up/downvolume display. also in audio menu, bass, treble and balance wereblacked out.
SONY KV27TS27
Dead,replaced q614 and ic607 Unit came in dead, fuses ok. converter transistor ok, r647ok.
SONY KV20VM20
Chirping sound at high ac line levels Customer complained about a chirping sound at night when theset was turned off. could not reproduce on counter and thought customerwas hearing normal chirp when ac is applied. found when turning ac lineup to 125 vac the unit would chirp every other se
SONY KV20VM20
Tick when off and after glow, replaced d1822 Replaced d1822 to cure tick noise. added heat sink compoundto q1801 it was not mounted. -solutioin: d1822 corrects tick noise when off. does q1801 need to beheat sinked since it sits next to one? its emitter connects to d1722which was bad. is after
SONY KV20VM20
Dead, replaced fr1805 Dead.
SONY KV20V10
Anode lead on flyback missing, 1-540-006-32 Board came with the flyback anode lead missing. -hq comments: the part number is 1-540-006-32
SONY KV20TS32
Intermittent audio/video, re-soldered jumper jw98 Intermittent audio/video. found 16 volt line open due to jumper jw98 not having solder on one end, nearest edge of board.