☰

Sony Repair Tips




AIWA
BEKO
CCE
CINERAL
DAEWOO
FUNAI
GRADIENTE
GRUNDIG
HITACHI
ITT
JVC
LG
MITSUBISHI
PANASONIC
PHILCO
PHILIPS
PIONEER
RCA
SAMSUNG
SANYO
SHARP
SONY
THOMSON
TOSHIBA
VESTEL


Search: sony
Results: 20100
Make Model Symptom Problem Solution By
SONY KV2650R
Aft drift, leaky q024 When you tuned a station it appeared as if the aft wassearching before it locked in on the strongest portion of the signal.vc was changing slightly before it locked.
SONY KV2649R
No sound, replace ic605 No sound in left or right channels.
SONY KV2648R
No bar display, replace shorted q4028 No bar display in any function except if volume was atmid-range. picture control would increase or decrease length of bardisplay. with color, hue or brightness there was no bar display.pressing hue, bar was all green. checking input to counter reset,
SONY KV2647R
White h lines on the picture, replace q001 The picture had white horiz lines producing a venetian blindeffect. there was also a buzz of 7-8khz in the sound. we found that thevc line was not being properly filtered. found q001 (fet) in the activefilter to be defective.
SONY KV2647R
Dark picture, shorted c725 This unit had a dark picture and the picture control did verylittle. found c725 shorted.
SONY KV2142R
No picture, replace c2213 33v line shows video on dc of about 1 1/2v. after warm-uptuner drifts off channel with or without afc.
SONY KV1953R
No tuning operations, replace ic003 Channel up or down inoperative. also unable to erase anychannels. no logic change at pins 1-4 on ic003.
SONY KV1952RS
No function, replace x2001 Unable to control volume picture or channel change. led wouldnot light. found osc crystal low in amplitude at ic2001. freezingcrystal would change amplitude from 20mv to 2v.
SONY KV1946R
Dark picture, r715 open Picture was dark. measured screen voltage. range was from105-185 vdc. found r715 reading in the megΩ.
SONY KV1922
Picture distortion Set had pincushion problem. traced problem to q514. signalat collector was distorted.
SONY KV1915
Dark picture Picture was very dark. no brightness and no 900v to crt.
SONY KV1914
Tuning drift Stations could be locked in, but then would drift off. pin 10of ic201, aft amp out was floating, and voltage was varying.
SONY KV1747RX
Dark picture Color information was present but there was no luminance atoutput of ic341. input signal was ok.
SONY KV1713
Picture distortion Short width - from 1/2 to 1 inch. problem starts as pinproblem. servicer then finds picture just a little short of width. mayhave been like that for some time.
SONY KP5040
Mechanical misoperation, greased small gear shaft bearings The door would open only halfway and the motor would shutoff. the door would not close more than 2 inches before shutting off.there was no grease on the small gear shaft bearing.
SONY KP5020
Overscan green crt Green tube was overscanned. traced problem to q5337.transistor was leaky from collector to emitter.
SONY FD20A
Dead, repaired cracks on board Set came in dead. no power, whether using batteries or acadaptor.
SONY KX2501
White vertical bar on the picture, see circuit change below White vertical bar about three inches in from the left side of the screen. it would go away when the pc boards were opened out to the service position.
SONY KV2649R
Intermittent power on/off, replaced d021 Intermittent power on/off. customer controls erratic.found d021 leaky on mt board.
SONY KV2649R
Volume low, replaced t205 At maximum volume setting, the volume was about 1/3 of normal. inspection of sound output signal at pin 14, ic201, revealed avery low level signal.