Sony TV Repair: Common Faults and Solutions.


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Sony Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
SONYSLHF600
No part #No function with remote. this ic seems to be the problem.please call with part #. see page 112, area g-20 on fu-38 board. no part# in 1985 semiconductor handbook. -hq comments: the part number (8-741-131-70) for ic bx1317 is given onpage 150 in the s
SONYCFS7000
Model #Service bulletin #146 tape recorder should be revised toinclude all model numbers using this gear (head rotation gear). -hq comments: we will add the model numbers in the bulletin. the gearyou are mentioning is used in cfs-7000/9000/f11. the gearbeen
SONYWMD6C
Intermittent motor driveMotor would stop intermittently. flexing main board wouldoccasionally cause problem, but problem was not reliably controllable.
SONYVTX1100R
Sound faded outSound faded out while listening to the problem. tv audiowas weak and had excessive treble, line audio checked ok. signal aroundic205 pin 25 was good, pin 23 good, pin 27 good, pin 26 bad. bypassedcap with tweezers and audio level came up to normal.
SONYSL2710
Video head replacementRepetitive head clogging.
SONYWM7
Unit dead - no operationA technician replaced the system control circuit but the unitis still dead. noticed the switch (s807) was in ff position. put theswitch back to the stop position and applied power to the unit. theswitch went to ff position again.
SONYWM7
The pb head does not stay in pb positionIn pb mode, the pb head goes up and down three times and goes back to stop position.
SONYWMD6
Audio very lowThe audio is very low even with maximum volume. when themuting circuit unit is disengaged, the audio level is normal.
SONYWMD6C
Motor too fast and no audioThe motor runs too fast and there was no audio in pb mode.there was no b+ (6v) applied to ic601.
SONYKV25XBR
Missing part #We need the bezel assy for kv-25xbr in black which usesa slightly darker bezel than the one for beige or plum.is there a different part? -hq comments: kv-25xbr is marketed in only one bezel gray shade version.but in practice it may vary within the produ
SONYD5
Disc overrunIn service mode, the disc motor turns very fast.
SONYFD40A
Pin cushion distortion, replaced q856Set displayed severe pincushion distortion. inspection ofthis transistor revealed e to b region was open.
SONYCCDV8
Snowy playback pictureSnow on picture, missing one rf envelope (defective drum).
SONYCCDV8
No video due to broken 24 pin connectorInoperative loss of video on vhf out. video out ok.
SONYCFS300
No sound from tape playerAm/fm works fine, but no sound from cassette player.
SONYSL2001
Unit shuts down after a few secondsUnit shuts down a few seconds after play button is depressed.
SONYSLHF900
Intermittent audio popDealer has reported that four units in stock have the follow-ing problems: during pause/edit, unit give an audio pop intermittently. -hq comments: if a pop noise is heard in hi-fi playback, add a 4.7ufelectrolytic capacitor across r510 on the af-9 boar
SONYSL2410
New guide pins are hitting cassette lid while loadingNew guide pins are hitting cassette lid while loading result-ing in noisy operation. -hq comments: you must use the part number in the s/m for the guide #1and #2. the pin kit a-6759-107-a cannot be used in this model. part # needed: x-3669-429-0
SONYTCFX520R
No ff/rewUnit would not go into ff or rew. brakes remained on. playand music scan operated normally.
SONYTCFX707R
Unit dead - no operationFound r506 blown, replaced same. transport worked, but nodisplay and no playback audio. found ps302 open, replaced same. all ok.ran several hours. noticed pb level started to drop intermittently.later, the display showed low and the audio had dropped