TV Repair: Common Faults and Solutions.

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Repair Guide: Common Issues and Fixes

Brand	Model	Fault	Detailed Problem
SONY	SL30	No luminance during playback, chroma ok	Monitor picture shows no low frequency information, onlychroma information. the picture also rolls.
SONY	XR780	Dead out of the box	Unit turns on and lights up but is muted.
SONY	KV2675R	Intermittent loss of picture or retrace lines, cr pin conn	Set would intermittently loose picture or get retrace and attimes go out of focus. this is a serious problem as it is not easily detected. i suggest an immediate s/b.
SONY	SPP22	Handset defective - no connection to base	Handset beeps as if distance between base and handset is toogreat. also when handset is in cradle it cannot be called by call button.
SONY	CDP650ES	Drawer won't open	Drawer would not open after inserting a disc upside down.
SONY	CDP70	No disc rotation - part missing	Part missing on chucking arm assy. nowhere to be found inunit, with part missing chucking arm puts too much pressure on disccausing no rotation.
SONY	D5	Jammed fr button	Fr button was jammed in causing unit not to start.
SONY	PCMF1	Muting	In 14 bit mode unit works correctly. in 16 bit mode, unitmuted.
SONY	KV2681R	No raster/sound, hi voltage ok, leaky c-049 on x board	Set could be turned on, h.v. would come on but no raster, nosound. found no reset at pin 18 of ic031 on x board. this is thesecond set i have worked on with this problem and the same part wasdefective.
SONY	KV5100	Need's part # for bracket uhf tuner	I need part number and availability of bracket for the uhftuner. -hq comments: the p/n for the uhf tuner bracket is 4-309-327-05, butit is not, and will not be available.
SONY	D5	Tracking not working	In service mode, tracking balance waveform is good but wouldnot turn tracking on when mode button is pushed. unit did not track.
SONY	CDP30	Service manual correction	Adjustment mode for e-f balance adjustment shows groundingvariable contact point of rv103, this should be rv104. the test iscorrect, however the picture of the pcb is not. -hq comments: we will issue a s/b.
SONY	WM10	Supply reel ass'y	Even with the thinner washers, it has been found that thesupply reel gear, wheel block assy, and motor chassis assy will not gotogether. caused dragging and washer and stopper will not go on shaft. -hq comments: washers are used to adjust clearances on
SONY	CDP302	Compact disc player	Skips intermittently, track 6 or higher, not always in the same place. a mylar sheet is already in place inside the bottom panel to reduce drag on the flexible connector from bu-1.
SONY	SL10	Negative picture	Negative picture and no sync on e-e and pb.
SONY	SLHFR70	Intermittent no tuner audio	No tuner audio from ti-5 board. pin 11 (tuner audio mute) ofic301 on sa-10 board was high. it could be intermittent.
SONY	SLHFR70	Poor betascan after 30 min to 2 hrs	Unit had very poor betascan (all modes) after warming up.
SONY	STRVX550	Volume stuck in level	Volume stuck in one level, however, display changed.
SONY	FD20A	Wrong color cabinet parts	Herman electronics, part distr. in miami ordered p/n3-314-033-21 and 3-314-023-21 for a silver unit but keeps getting thoseitems in blue. -hq comments: part numbers in service manual are incorrect. pleaseorder by the part numbers below.3-314-033-21 cab
SONY	BMC220	Poor picture - with/no color	After repairing original focus problem, unit failed duringfinal test. unit displayed a very poor picture, no color and out offocus.