TV Repair: Common Faults and Solutions.

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Repair Guide: Common Issues and Fixes

Brand	Model	Fault	Detailed Problem
SONY	KV2649RX	Poor focus and retrace lines, crt base cleaning, etc	Intermittent fine retrace lines and poor focus. this problem could show up when the weather is humid.
SONY	SLHF900	Color beat in picture	When inserting video over self-recorded tape, insert is quiteclean. when inserting (on hf900) over tape recorded on an sl-2000, chromabeat and flickers become evident. could head width difference be problem?
SONY	WMF75	Missing part number for control cabinet door	Missing part number for control cabinet door. -hq comments: the part you indicated is a part of the cabinet assy ref.#5 p/n x-3326-515-1. the cabinet is supplied with many parts includingrubber jackets for function buttons. this is to insure water-tig
SONY	CDP302	Solder connections	Bad solder connections on the ic201 and ic308 chips. somepins were never soldered. different pins at different times. that wasthe only problem. -hq comments: no fprs, but i have heard about some bad solders on ic307.will report to tokyo.
SONY	KV1961	Missing p/n for vhf channel numbers, x-4365-202-1	Missing part number for vhf channel numbers. -hq comments: the vhf channel numbers come with holder ass label'(p/n x-4365-202-0).
SONY	SLHF300	Tape damage	This unit had distorted audio and lower edge of tape waswrinkled. pinch roller rubber was machined wrong.
SONY	EVS700U	Clogged head	This unit had a snowy picture.
SONY	XR85	No eject cassette	H.g. brix co. reported these units would not eject tape. hereports many problems with this.
SONY	CFS9000	Head would not engage	Head bracket assy (x-3319-204-1) was broken on the headrotator.
SONY	CCDV8	Noise band in playback mode	Noise band at bottom of picture. grease was found on pinchroller and #4 and #5 guides.
SONY	KV1770R	No sync	No sync.
SONY	SLHF600	Wrong part # for head	Upon looking up p/n for the head disk assembly on page 130 inthe s/m ref. #255, it lists p/n as being a-6762-177-a. this is incorrectsince it is only a 2 head disc according to the fische. it showsa-6762-178-a as being the correct p/n for this model.
SONY	CCDV8	No functions	This unit would power up but not engage any functions. wefound the m switch to be jammed. replacement resolved the problem. -hq comments: so far we have not seen many reports of defective modeswitches.
SONY	SLHFR60	Beat lines with cable	In e-e mode, unit would operate normally on an off airsignal. when operated on cable tv there were several beat lines inpicture.
SONY	XR65	Intermittent squeal on fm	Intermittent squeal, fm only.
SONY	STRVX300	Board layout incorrect in the manual	Functions won't switch. servicer trying to check ic502 andsays that the hook-up is different from the manual and that the board issilk-screened differently. he says pin 6 goes to ground and pin 8 isgoing to b+ on his board. -hq comments: the board ove
SONY	KPR4150	No turn on	When power is turned on, only sleep light would come on.found f3 (2.5a) fuse blown. at full voltage, the +18 volt line draws2.4a. at normal voltage, the +18 volt line draws 1.5a-2a. at lowvoltage, the +18 volt line draws 1.0a. after fuse replacement
SONY	KV1952RX	Retrace lines and slight fold-over at top of raster	Retrace lines and slight fold-over at the top of the raster.dealer called me regarding this problem, also intermittent.
SONY	KV2680R	Intermittent sound and video, replaced saw filter	Set would have loss of sound and picture very intermittently.the only clue we had to the problem was the loss of dc voltage at pin 1 ofic201.
SONY	BMC550	Unit goes into shutdown eight seconds after turn on	After cassette was loaded and threaded, unit would shut off and dew led would lite. found the drum speed adj. was intently varying.