Repair Tips

Search:
Results: 87727

Make	Model	Symptom	Problem
SONY	CCDV8AFU	No playback/no record	Was unable to get unit to record, playback or erase. checkedheads with sl-5151 head checker. all checked ok. checked record andplayback amps, worked fine.
SONY	CDXR7	Noise before selection is played when using ams	A brief blip of sound is heard immediately before a selec-tion, accessed with an ams key, is played. this also occurs occasionallyduring the initial play of a disc.
SONY	SLHFR70	Malfunction of reel motor and system control	Found f002 in p.s. section open. after replacement, ic401 onsa-10 board gets very hot. erratic reel motor operation. f002 gets openagain. also, found d210 (sa-10 board) open. gets hot after replacement,the other problems still exists intermittently.
SONY	CDP70	Intermittent skipping	Unit would skip tracks intermittently at random. tracedproblem to cold solder on m701 minus terminal. have seen several unitswith either + or - terminals cold soldered. since motor is assembled intoboard, this could be a problem on similar models also
SONY	CDP7F	No focus search	The unit would not focus search.
SONY	KV1952RS	Unit shuts down, replace d502	This unit would immediately shut down. we defeated the shut-down circuit by shorting the line from the hvr. then running the unit upon a variac we found ic501/pin 9 to be only 3.4v. the cause was a defec-tive d502.
SONY	KV1354R	Unit would not tune, replacedic-003	The unit would not tune in the stations. it was not possibleto change the output of ic001/pin 12 pwm out. the problem was caused by adefective pll controller/ic003. interestingly, the upc seemed to work inall other respects - display, etc.
SONY	CCDV110	S/m page 20 what is natrium lamps?	Page 20 list natrium lamps under difficult conditions for linear auto w.b. -hq comments: natrium is the same as sodium vapor lamps.
SONY	TCD5	Part not available - pause spring	Part is on national back order. pls assist in locating part. -hq comments: there are none in the usa. hopefully rpc (tokyo parts)will have some. since this is an older unit though, they may not.
SONY	KV25DXR	Dark picture - no color sync	Set had very dark picture and no color sync.
SONY	TAV5	Unit dead - no power	Unit was inoperative due to malfunction of power supply.static tests revealed q901 base to collector short, r901 open and bothdiodes in ib901 circuit block were shorted.
SONY	KV1500	White dots across top of screen	White dots across top of picture, looks like unblacked vitssignal. vert. height and lin. controls have correct range.
SONY	KV25DXR	Bar in middle of picture, replaced ic502 afc control	Ghost image overlays normal video on screen. horizontalblanking bar appears in middle of pix.
SONY	CDP302	Intermittent skipping	Unit would play normally for a time then start to skip. afterwarmup it would occasionally fail to read toc. i noticed that the efbalance drifted after warmup and that freezing the rf amp ic would cause asignificant change in dc centering of traverse wa
SONY	KPR36XBR	Broken picture control buttons, replaced front ass'y	Picture up/down buttons broken.
SONY	CDP302	Ams function does not work reliably	Noisy unreliable ams. no other problem noted.
SONY	SLHF450	Noise in playback	During playback noise getting into video resulting in horiz.clicks getting into pix.
SONY	KV1997R	Only power on & no power off, shorted c133	Only power on, could not power off. sleep light would notcome on at power on. no function. servicer had replaced ic103 and ic105still same problem. had v pulse pin 4, clock ok, reset ok, had noiseat h sync.
SONY	KPR4600	No channel memory,replaced q-308 and d-339	Above symptoms were intermittent when turning set on and off with power button. reset pulse was insufficient. found a leaky base to emitter q308 and leaky d339.
SONY	KV2091R	Low audio, change value of r842 to 300 ohms	Customers are complaining about the low volume delivered by this model at max setting.