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Sony Repair Tips




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Search: sony
Results: 20072
Make Model Symptom Problem Solution By
SONY KV2649RX
Dead, replaced h out transistor Set came in dead. found horizontal output shorted.
SONY KX2501
Bullets in picture, grounded crt pin 10 The unit had bullets on the screen even with no video input.it appeared to be caused by some kind of corona discharge. furtherinvestigation revealed pin 10 on the crt to have a charge. this pin isnot connected to anything on the crt board. grounding t
SONY KV1948R
Picture distortion, replace c654 The picture was pulled in on all sides and was snowy. wefound all b+ power supplys to be low. the 135v power supply was about 103v. regula-tion was poor. increasing the line voltage to 140vac resulted in normaloperation. we found c654 which is across t651/pot t
SONY KV1941R
Video drift, leaky d2213 On low channels video would drift.
SONY KP5040
Incorrect mechanical operation, adjusted gear ass'yg New arm assembly was installed. door would not close all theway on right side. found large gear off one tooth on gear strap inassembly.
SONY KP5040
Incorrect mechanical operation, replaced arm ass'y Mirror would not extend to complete open position.
SONY KP5040
Buzz in sound, adj helical filter and replaced aft with r Buzz on some cable channels. this complaint was pending sincedec. two trips were made to the customer's home. on the first trip iadjusted the helical filter which removed most of the buzz.
SONY FD30A
Poor vhf reception, ant contact plate a missing The reception on vhf low channel was very poor.
SONY KX2501
Mechanical popping noise, tighten cabinet screws The customer said that the set made loud popping noises evenwhen turned off. the sounds were caused by the cabinet contractingduring temp changes. we found the screws mounting the mask to the maincabinet loose by 2-3 turns each.
SONY KX2501
Immediate shut down, replaced r1602 Unit would go into shut down within 2 minutes of turn on.found r1602 open. replaced with another 24Ω resistor and performedmanual check for shut down circuit.
SONY KV2649RX
Dark picture, add cap to c546 When viewing scrambled channels using the jerrold cableconvertor box, the picture is very dark with smeared reds.
SONY KV2648R
Audio noise in matrix, resistor change Whistle in matrix audio only. the countermeasure given to meto resolve this problem worked.
SONY KV2647RX
Picture distortion, poor grounding at rca type connector Weavy red lines from top to bottom about one inch thick onlow vhf channels. also radiating to other sets on same antenna line.
SONY KV1515
Buzz in sound Buzz in sound on showtime scrambled cable channel only. allother channels ok. verified problem, noted that several older sonychassis in same house worked ok (including kv-1710/1941r/8000).
SONY KP5040
Horiz. lines in the picture, ground loop changed There was a drive line in the picture which was also radiatingto nearby sets. we found this interference to be caused by the horiz. barosc. in the crosshatch generator (ba board). we could find no defectivecomponents and assumed the problem to be a gro
SONY FD20A
No raster, replaced crt This tube had a shorted anode causing no raster. the hv waslow.
SONY KX2501
Shut off, replaced ic651 Set shuts off just after turn on. found 140v b+ line goingup to 250v.
SONY KV3000R
Dead Dead. found 150vdc fuse on the f board open. second problemis both doors were slipping on the track. repositioned door motor. thisis the second unit i have found that the nuts that hold the motors wereloose. upon closing door would reverse and open.
SONY KV2649R
Intermittent fade out, cleaned crt pins Picture would fade out to a dark raster, very intermittent.all voltages checked ok.
SONY KV2647RX
Black lines on the screen, replaced vhf tuner Two black lines on left side of screen.