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Sony Repair Tips




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Search: sony
Results: 20073
Make Model Symptom Problem Solution By
SONY VTX1100R
Display unstable The display was very unstable. we found that there was ex-cessive noise on all the b+ lines. this was due to an open decouplingcapacitor - c135 in the dc-dc converter. replacement resolved the pro-blem. the tip off was the fact that the converter was
SONY KV2735R
Pic instability when using video disc player, q-353 removed When using a video disc player, the picture would jump ver-tically whenever there were rapid changes in brightness. we resolvedthe problem by defeating q353. this prevented the vert. pulse from beingexcessively processed. all input modes work correctl
SONY SL300
Will not thread tape all the way The unit would load the cassette and thread about 1 inch andthen eject the tape. we found that the capstan motor was not turning andwas the cause of the problem. replacement resolved the problem.
SONY SL250
No tuner vc No vc voltage for the tuner, unable to tune differentchannels. (also s/n 810516, 813107)
SONY SLHF1000
Service bulletin no. 312 This service bulletin has incorrect information. the correctpart number for q830 a dtc144es is 8-729-900-89. also the diagram forvi-18 mount side is incorrectly drawn. it should look like this correctedversion. -hq comments: a revision on this servic
SONY CDPC5F
Service mode test procedure The method of grounding pin 2 of cnp 521 and pin 8 of ic505does not enable the disc to spin. it will check front panel functs. butcannot make rf adj. or ef adj. -hq comments: this method came from tokyo. we did not know this pro-cedure did not work un
SONY EVC8U
Noisy picture (playback) Tape recorded on this unit played back ok on another unit. inplayback mode, picture very noisy, looked like a de-tuned picture fromtuner. inspection revealed excessive noise on pins 12 and 13 of ic-101,ar-4 board. also, noise present on 5 volt line on
SONY D10
No spin and no movement of optical assembly The turntable spins very weakly and makes very loud noise.the spindle motor was moved inside between two motor brackets. the sledmotor does not move at all.
SONY KV2785R
Distortion in stereo mode, attn suggestion The unit would occassionally develop distorted audio in bothchannels when in the stereo mode. it sounds as if there is an audio out-put starting to break down - popping, crackling, distoriton. the problemwas particularly pronounced on ch. 4 which is ve
SONY CDP750
Fop assembly does not meet disc Fop assembly does not come up to meet disc.
SONY D3
No output No output, no 9 volts to regulator.
SONY ITA600
Telephone does not go off line On some telephone systems, unit would not release line whenhung up. found d303 to be leaky.
SONY EVA300U
Incomplete replacement board After replacing ss-38b bd., the remote control worked inter-mittently. while in play, if search button was held down the unit wouldgo into scan for about 1/2 sec. this would repeat about every 3 sec. intracing the remote signal from the timer board to
SONY KV2650RX
Missing part number, cp003 1-417-087-00 Part number is missing from service manual.
SONY KV2649RX
Missing part number, cp003 1-417-087-00 Part number is missing from service manual.
SONY KV1953R
Missing part number, cp003 1-417-087-00 Part number is missing from service manual.
SONY KV1948R
Missing part number, cp003 1-417-087-00 Part number is missing from service manual.
SONY KV1222
Missing part number Part number is missing from service manual.
SONY XR530
No audio output - amplifier ic fails Intermittent failure of output ic after several minutes ofoperation. low frequency oscillation with volume turned up, not obviousat lower levels.
SONY KPR4110
B+ fluctuates between 135v and 50v, replaced ic-8 The b+ line keeps fluctuating from 135v to 50v continuously.found 18v line fuse f3 on (e) board open caused by a shorted audio outic8. also pertains to serial number 7003297.