TV Repair: Common Faults and Solutions.

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Repair Guide: Common Issues and Fixes

Brand	Model	Fault	Detailed Problem
SONY	BMC220	Af-8 connector miswired and ovf out of focus	1) connector on af-8 board is wired backwards. 2) ovf is notin focus, even when lens and tape are in focus. -hq comments: 1) checked with nick mycanka, no other reports. pleaseresolder wires. 2) refer to service bulletin #160. adjust by eye forprope
SONY	CDP101	Part number	T/n a00361r and s/b #191 all suggest modifications ofseveral c.d. models. new part numbers given for parts changed in thesemodifications do not match each other. in other words, a0036 and a0036rshow different numbers and s/b #191 shows numbers which ma
SONY	D5A	Unit dead	Unit goes dead, reset pin shorted (pin #8).
SONY	SL2710	Part no. of chassis	We need a part number of chassis. -hq comments: please refer to s/b no. 195 (july 31, 1985). part numberis x-3681-108-7.
SONY	KV25XBR	No raster/no sound but has high voltage	Unit comes on with sleep time led and rgb ledraster, no sound but had h.v. found there was no +40v on d board.
SONY	PSFL9	Incorrect set down mod.	Need part # for modification. -hq comments: install edge-detection board (p/n x-4906-107-1).a diagram is available for installation.
SONY	WMF65	Missing part number	Ref. #222 pinch lever assembly. no part # in s/m or irp. -hq comments: p/n is x-3320-311-1. please refer to tape recorder s/b#176 nov. 1985.
SONY	KX2501A	High pitch sound and shuts down, replaced ic1501	After 5 days of playing (6 hours per day) unit would shutdown and high pitch sound would come from ga board. if set was turnedoff for a few minutes (2 min) set would operate ok for a few days.
SONY	CDP302	No function or cannot read toc	A small metal roller guide was sitting on top of the discmotor and preventing disc from setting on it. this roller came off fromdisc plate #373 which has 4 guides. -hq comments: the disc plate has been changed to a new one in currentproductions, and no
SONY	KV1953R	No display - customer controls inoperative, q2004 and q2001	Raster/hv ok, but local customer controls had no effect.channel up/down etc. inoperative. display dead. no waveforms at allaround ic2001 (controller).
SONY	KV2675R	Pac-man pattern on screen, no video	No vip function, pac-man pattern flashes on screen at theclock rate about once a second. rca uses this same ic051, mb88303, chipin some of their vcrs and they have the same problem.
SONY	KV25XBR	Vertical jitter	This unit had a one inch vertical jitter when playing copyguarded tapes on a fischer vcr (model fvh 839).
SONY	KV2691R	Muted picture and no vip operation and no remote, d-062	The picture was muted and sometimes after warm up pix wouldcome on. ic052 pin 2 was high. found d062 installed backwards atfactory. d062 was installed cathode to b+. the board and the boardlayout show the diode anode to b+. the schematic shows catho
SONY	SL10	Solenoid plunger	The original part # 1-454-349-41 was subbed to 1-454-365-51.the new solenoid fit the unit, but the collar on the plunger would notclear the mounting pieces on the unit. the original plunger had nocollar. we need to have the plunger changed on this sub.
SONY	WMF15	Damage caused by battery	Negative end of battery heated up and pushed cabinet out. -hq comments: new batteries from eveready and duracell may have shortedinside the unit. they have a plastic skin instead of old metal. underthe skin is the positive cylinder, and negative termi
SONY	KV2691R	Dark band across crt, replace q-204	The unit had a dark band across the crt about 2/3 up from the bottom. the colors were also weak and somewhat out of phase.
SONY	SLHF600	Distortion on beta hifi	Problems with beta hifi playback and record. customer livesless than 1/2 mile away from a broadcast station transmitting on 1350kc.traced problem to the cable tv line that was hooked up to the fm input ontheir denon dra-400 receiver. the denon had a 75
SONY	KV1972R	No manual control, replace ic105	All front panel controls on the unit became inoperative (snd,pix, chan, pwr), however, the remote worked on all functions.
SONY	KV2680R	No vip, replace ic-105	No vip operation. all other functions worked correctly.
SONY	KV1390R	Shutdown, replaced r559	The unit would go into immediate shutdown. we shorted c535 todefeat the shutdown circuit and then ran the unit up on the variac. allother circuits were functioning properly.