Repair Tips

Search:
Results: 88102

Make	Model	Symptom	Problem
SONY	ICFC310W	Modification for buzzer level	Alarm level very low.
SONY	ICFC11W	Clean and adjust switch	Alarm set time shows upon auto buzzer.
SONY	ICF7600	Loose dial indicator	Dial indicator needle disconnects from the dial string. theunit will continue to tune radio stations but customer is unable to determine the station from the indicator.
SONY	CFS71	Lubrication in switch assy needed	When the fast fwd/rewind switch is activated by the switchlever assy, binding of the two nylon pieces can occur. this causes themuting switch to stay in the on position. the audio is then greatlyreduced. this condition occurs most often when the ams f
SONY	CFM23	Defective motor	Tape speed slowing - occasionally decrease in current tomotor. same decrease on external dc input.
SONY	TFM7720W	Broken connection on control	Volume control has no effect on volume - volume remains loud.removed volume control and it was working properly.
SONY	TFM7720W	Cold solder	No am on low end.
SONY	TFM6160W	Loose pulley	The tuning dial does not work. the pulley near the speakerpulls loose causing the dial string not to work.
SONY	TCS300	Idler out of position	Spindle assy take-up reel will not turn in playback or recordonly.
SONY	TCK81	Back tension torque adjustment	Back tension and tape path was incorrect. complaint of tape wrinkle on maxell tape.
SONY	ICK81	Steel ball out of proper location	Tape jammed. found head deck wouldn't retract properly.
SONY	TCK65	Defective ic802	After operating approx. 1.5 to 3 hrs, the transport willstop - rewind - stop. the led display will then indicate 1 and none ofthe function switches have any effect. this is with rms off, with rms on- cannot be programmed. found pins 12, 13, 15, 16 of
SONY	TCK5	Missing bushing	Both of these units came in with excessive wow and flutter.what causes this is the absence of a bushing which holds motor switchlever in place. without this bushing motor lever is allowed to movefreely and ends up meshing with the teeth on supply gear c
SONY	STRV55	Leaky c412	Am and fm very slow to lock on station - then drifts offagain. tantalum capacitor c412 in lpf was leaky.
SONY	STRV45	Defective c412	Tuning incorrect - am station at 920 khz, tuned in at1600 khz. no local on 1600 khz. fm tuning out of band and picking upmicroprocessor rfi.
SONY	STRV35	Outputs open under load	The output transistors in these receivers were intermittentlyopening under load. all these were used with 4Ω speakers.re: jr0803 str-v35 listed did not have a979 failure.
SONY	STRV25	Modification for reliability	2sa979 transistor (q605/655) fails. -hq comments: see upcoming s/b: 100Ω emitter resistor gets replacedby 150Ω (also in technical newsletter #8110).
SONY	STRV25	Error on pcb silk screen	Q605/655/606/656/607/657/608/658/609/659/610/660/612/613/614/615/616 are all marked wrong on pc board.
SONY	STJ60	Defective nor gate	Normal output levels on pins 1 and 7 of ic302 (audio ampoutput) relay will not turn on - no output. q404 was 15.5v potentialshould be near 0v when relay activates. voltages on ic401 pins 8, 9, and10 was all 0v nor gate defective.
SONY	M203	Defective c122	Newly made recording had low playback volume. led indicatedexcellent sensitivity during recording but playback was low. previouslyrecorded tapes were ok.