TV Repair: Common Faults and Solutions.

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Repair Guide: Common Issues and Fixes

Brand	Model	Fault	Detailed Problem
SONY	CDPC700	Cloudy lens in new kss-150a	Pulled a new optical block out of stock and noticed it had acloudy lens. i did not use it.
SONY	CDP55	Door opens by itself	After the first repair in which the belt was replaced, thecustomer complained of the same problem. 1. after opening the tray totake out a disc, the tray will close by itself before another disc can beput into the tray. 2. tray opens by itself.
SONY	SLHF900	Can play pre-recorded tapes but not tapes recorded on itself	Unit would play pre-recorded tapes but not tapes recorded onitself.
SONY	KV27XBR10	Interference pattern across screen, replaced comb filter	Interference pattern across the screen which looked likesignal overload. scope shot looked ok at input, pin 2 cm-1301, but noisepresent at output pin number 6, y out. suspected this part was bad.
SONY	MDP200	No clv lock on cd - no play - ld ok	Unit plays ld but not cd. looked like clv servo problem.
SONY	D90	Runs in test mode, shuts down in normal operation	Unit would achieve focus, sled would move toward center ofdisk and continue reading t.o.c. data then shutdown. looking at rf testpoint, showed signal typical of t.o.c. area: fok, sense, h. in signalsappeared normal.
SONY	CCDF55	Won't thread a tape	Intermittently, drum won't start.
SONY	CCDF50	No camera or playback video out	Unit had no camera, playback or ee video. signal was goodgoing into input select ic-362 pin 28 (va-board). video looked clipped atpin 11 and no signal was present at pin 4. changing ic-362 had no effect.found no serial data i/o at pins 20-23. traced
SONY	CCDF40	No camera or playback video out	Unit had no camera, playback or ee video. signal was goodgoing into input select ic-362 pin 28. (va-40 board) video looked clippedat pin 11, and no signal was present at pin 4. changing ic-362 had noeffect. found no serial data i/o at pins 20-23. tr
SONY	CDP590	Need pinout for ic-401	Can you supply us with a description of the pins on this ic?which are inputs, which are outputs, etc? -hq comments: cannot locate pin out of this ic in any similar models.will fax tokyo for information. to tokyo: could you please send block diagram and
SONY	KV27AVR	Missing information from service manual	Vertical bias adjustment procedure: on service manual pagem-49: step 3 does not inform where the 16.5 +/- 0.1v test point is. -hq comments: please add the following information to your servicemanual: step 3. connect digital multimeter across dy connecto
SONY	KV27XBR15	Cold set has no video for first three minutes, refer l1614	When set is turned on cold, there is no video for the firstthree minutes. high voltage and all function check out ok except video ismuted coming out of ic-301 to crt. then the raster starts to blink on andoff for about 15 seconds and then the picture w
SONY	WMF200	Problem fix - audio output level is low	Found low audio output (cassette). found audio input existsat r-112/212 and amplification exists at r-113/213.
SONY	D66	1/2 vcc adjustment points	Manual does not give location of 1/2 vcc point for adjustment.
SONY	CCDV99	No picture on pause	When camera is in playback, put in pause, video will be lost(bad a head). following the video path, found pin 20 hd-8 board hadone field missing when put in pause. following it back, found that inpause, video switch between pin 5 and 3 ic-202 on the h
SONY	CCDTR5	No video out of camera	Connections on inner side of cn-301 on cd-14 board were bad.voltage was on connector not on imager ic.
SONY	KV27XBR10	Picture comes on slow and flashes for five minutes,	On first turn on, the picture or screen will come on veryslowly. when picture comes on, it will flash on and off until the set ison for five minutes. unit will work well. this set has always done this.
SONY	SPP110	Front cabinet's clips of the handset are broken	Unit comes to the ssc with loosened cabinet at the batterycompartment due to the broken clips. the front cabinet can be repairedinstead of replacing it.
SONY	WMF707	Automatic scan not locking	When changing frequency range of tuner from japanese toamerican, according to customer information, the tuner feature of lockingonto strong station signals is lost. when reverting back to japanesefrequency range, the tuner will lock onto strong signals
SONY	CCDF45	Mechanism will not function	Mechanism will not function. pins 18, 17, 16 and 15 of ic-501minimum data was not changing. no output just 5vdc.