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Sony Repair Tips




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Search: sony
Results: 20102
Make Model Symptom Problem Solution By
SONY KV10FMR20
No audio, replaced c252 Unit had no audio in fm/video or tv mode. discover defective capacitor c252 on y pc board. -hq comments: c252 filter cap is located on the y board on the9v supply line. schematic grid location b-5
SONY FDT5BX5
Fuse f602 blows due to int high current draw resolder d505 F602 blows causing no pix. replaced fuse found unit worked,put amp meter in place of fuse, unit showed 600-900 ma current drawaveraging 750ma with normal pix. found cold solder on d505 damper diode.after resolder unit had 490-680ma, current draw aver
SONY FD525
No raster, replaced c803 No raster, hor out trs gets out. traced waveform @ ic201, pin17 (hor drv) to base of h drive trs - ok. checked signal on other side ofc803, at hor. output q802 base. severe loss of signal.
SONY SPPA450
Flywheel broken on mech Unit had no answering machine funtions and had a rattle.found flywheel broken from capstan shaft assy.
SONY TCWR645S
Deck b inoperative - resoldered cn81 Deck b would not always play tapes. deck b would notdistinguish between different tape types.
SONY TCWR645S
Deck a no function - resoldered cnp81 No function on a deck.
SONY TCRX79ES
Eating tapes, plays too fast - replaced m1053 Unit has fast playback. m1053 capstan motor went defective,speeds up to 5014 hz normal instead of 3000 hz.
SONY TADL100
No power - replaced power transformer No power.
SONY TADL100
No audio - reinserted cnp903 Unit had no audio. -solution : connector cnp903 not plugged in. this connector suppliesvoltage to decoder board and main.
SONY TADL100
Function light flashes - adjusted rf Function light on digital signal transfer box flashes andunit has no audio on functions that are flashing.
SONY STRGX69ES
No audio when loudness button is off - insert shorting plugs No audio when loudness button is off.
SONY STRGX50ES
Unit in protect - replaced leaky d714 Unit in protect.
SONY STRG1ES
No display - replaced r783 Display board was missing the +30v supply. the currentlimiting resistor r783 was open. the bad part was discolored and showedsigns of overdisipation.
SONY STRD995
Dead - replaced outputs The unit was dead. no display because f802/803 opened. foundq703 and 704 shorted e - c.
SONY STRD865
No sound - re-inserted cnp803 Found no sound from unit. found cnp803 loose from mainpcb.
SONY STRD665
Dead - replaced t902 The unit would not power up every time. found the pins ont902 to be loose, the unit would power up if the transformer wasphysically moved.
SONY STRD615
Unit in protection - replaced leaky d709 Unit in protection mode even when protect in pin 15 ofic202 was lifted. replaced micro. now unit goes into protection whenspeaker switch a is turned off. by dividing circuit found if d709 waslifted unit worked.
SONY STRD615
No rear output in dolby surround mode - repl x301 No output rear channel or front, only center. x301 nooscillation, x301 on the main board defective.
SONY STRD511
Interupt ac & memory lost, unit turns itself on - repl ic202 When unit is plugged in and turned off, then remove powercord. let unit sit for 5-10 mins, then plug back in, it turns itself onand resets micro.
SONY STRD365
Unit in protect - reinserted cnp403 The unit is always in protect.