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Sony Repair Tips




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Search: sony
Results: 20073
Make Model Symptom Problem Solution By
SONY WMF45
No tape operation or incorrect tape speed Lower left hand corner of board breaks under s-302 and r-403.two previous units with the same problem. also applies to serial number405974.
SONY KV27TX40
Clock resets intermittently, ac line failure? Servicer reports that clock will reset intermittently, noother memory is affected. seems to happen when set is off. servicerreplaced ic and diode/transistor attached on the not ac pin of ic-101with no effect. servicer noticed he can force symptom to o
SONY KV27SXR10
Clock loses memory, ac line failure related Intermittently, clock will zero out time will reset to :00.also occured on serial number 7271746. the sample at servicer's will soonbe ready for examination by zone or technical department. -hq comments: pin 27/ic-101 is reset pin also for clock operat
SONY KV32HSR10
Motor boating through speakers, t-501 cold solder Set would run for a time then it would shut off with motorboating through speakers.
SONY WMF73
Unstable speed/wow and flutter Cassette deck will play at one speed in forward and another inreverse. also noted excessive wow and flutter and speed will slowlydecrease then settle at one speed. replacing pinch roller will help insome cases but suspect that capstan bearings (bushing
SONY CCDF77
Incorrect alignment procedure for hall adjustment The alignment procedure for the hall adjustment (servicemanual supplement-1 page 29 step 3-3-6) does not work as indicated. -hq comments: the correct procedure is as follows (ignore the procedurein the service manual): 1: select adjust page f on the rem
SONY XE90MK2
Ic-101 and pc board compatibility problem The service manual parts list description matches thecomponent part number mounted on pc board but the service manual pc boardlayout shows a 9-pin in-line package for ics ic-101 and ic-102. theunit being repaired has 8-pin in-line ics mounted on the pc
SONY KV1980R
Snowy picture, replaced q-112, d-107 & d-1001 Unit was hit by lightning and came in with snowy picture.along with chattering of the relay and no display illumination. the 5vsupply measured 0.9v. replaced shorted q-112. the voltage came back,the relay chatter stopped but the set was still snowy.
SONY KV1326R
No raster/no sound/hv present, replaced tuner and r-552 No raster, no sound and hv is present. found r-552 open afterchecking 9v supply which measured 2.9v. disconnecting the collector ofq-503 restored the 9v and measuring the 5v line revealed a dead short toground. disconnecting the 5v to the tuner restor
SONY KV2644R
Distored picture, replaced c3004 Distorted picture: two lines approximately 1/4 inch thick andspaced approximately 5 inches apart moving upward. they are mostlyvisible on channel 2 and 7 and radiates on nearby tvs on channel 2. theylook similar to the lines seen when a vcr is put into
SONY CDXR77
Skips when stationary and with new discs The cd player mistracks scratched and non-scratched discsfound fop in bad lot number range.
SONY CDXR77
Loads disc but does not play Disc was loaded but sled did not move and reference number 318(bracket, damper a) and 307 (bracket, damper d) were bent. referencenumber 412 (worm gear) is broken.
SONY CDX6020
Skips or drops out at middle of disc - squeal from unit Audio cuts out near middle to end of disc. squealing soundfrom fop. observing adjustment positions before alignment, they weredifferent than mine. focus bias, focus gain, tracking offset and trackinggain. pll is ok. this also applies to serial numbe
SONY KV1543R
No volume operation after warming, replaced c001 Customer complained of volume not working after warming (2-4hours). found 12v supply to ic-001 pulled down to 8.5v after warmup.supplied 12v externally to ic-001 and volume worked ok. pulledconnector to detector pcp (m2-3) and volume worked ok again.
SONY KV27EXR10
Bars on the screen, redress wires from "c" board Five faint vertical bars across the screen on white background only.
SONY DTC700
No mechanical function Unit had power but did not respond to function commands fromfront panel or remote commander. input to mechanism controller waspresent though no functions were observed.
SONY KV27XBR10
Rgb lines in picture, see service bulletin number 76 Three to four retrace lines are visible at the top of thescreen. they do not look like ordinary retrace lines but are of solidred, blue, or green colors.
SONY D12
No audio No audio, through troubleshooting i noticed that there wasn't-1.75v at pin 7 (wclk1) of ic-301 (d/a converter). tracing this line backto ic-601 (signal processor) pin 79 (wdck), i found a poor solderconnection.
SONY SLV555UC
During recording picture blanks out The unit was losing ctl pulse during record. the picture would blank out during playback.
SONY CCDF55
No color in playback No chroma rf at pin 42 of ic-203 (chroma process). lostsignal at c-325.