TV Repair: Common Faults and Solutions.

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Repair Guide: Common Issues and Fixes

Brand	Model	Fault	Detailed Problem
SONY	CRF330R	Missing part # for panel front	No part # for panel, front. -hq comments: the part number is 3-880-501-11, but it is no longeravailable from npc nor tokyo.
SONY	KV1770R	Poor purity	The screen had a strange green hazel color to it. it appearedlike a chroma problem but a little experimenting revealed a problem withthe crt. it was not possible to achieve anything close to correct purity.
SONY	KV2680R	No audio/video, replace 15v reg drive q-1128	Unit had raster out no video or audio.
SONY	KV2670R	Will not turn on manually, replace ic-105	Unit would turn off and on with remote control but notmanually.
SONY	TCFX44	Motor boating during record	Unit motorboats intermittently during record, putting soundon tape.
SONY	SL2400	Record/ee picture distorted	Problem looked like tuner agc problem. playback ok. pin 5ic4 had 5.3v. found no adjustment of rv2 (peak agc). base of q4 was 6.3vand could not adjust. measured resistance of voltage divider, found thisto be 28k. checked voltage r22 found no voltage
SONY	KV2649RX	Would not change channels, locked on ch 6, replaced ic003	Unit would not change channels, locked on ch. 6 and no powermanually.
SONY	KV2657R	No channel 4	When ch. 4 button was pressed, it would not light, instead 3other channels would light.
SONY	SPP22	No functions after hot	Phone operates normally for approx. 15-20 min. then powerled goes out but charge led stays on. when phone is put into talk mode,handset chirps. pin 11 power off drops from 4.8v to 1.8v. changed c930.022 mfd disc capacitor and pin 11 now 4.8v.
SONY	SLHF300	Poor tracking, poor recovery from betascan, no beta i pb	Have received a number of sl-hf300 and -hf500, also sl-hfr30with poor tracking, poor recovery from betascan (fwd or rev) and no beta iplayback. capstan servo circuit on all of these machines have not beenadjusted to spec. also tape path alignment close
SONY	ICF2002	Incorrect notice	Enclosed is a correction notice for icf-2002. the unitoperates on 9v not 12v. it is my belief that the ac-12 is a 12v unit. -hq comments: the correction slip is correct. the ac-12 is a multi-voltage ac adaptor: 4.5v, 6.0v and 12v. tokyo has changed
SONY	WM10	Tool	Is there a tool available for removing the retaining nut fromthe volume knob or above units? if so what is the part number?
SONY	BM600	Part # needed	Need part # for gear. -hq comments: the part number of the gear is 3-574-629-11. please referto s/b tape recorder #132r.
SONY	PC701	Insufficient brightness on profeel monitors using computers	When using a pc701 with a kx-2501a or a kx-1901a, pictureseems to be dim. changing monitors has no effect. changing pc701, doeschange picture contrast and brightness. -hq comments: pc701 normally by design provides adequate brightnesslevel and should
SONY	KV1992R	Cannot turn set on with manual or remote, parts toutching	Plugging in set would make it turn on. could not turn on setwith manual or remote. set could be turned off by either control.
SONY	CDP302	Buttons stuck	The two ams/rms buttons are depressed and will not springback. this causes the machine to lock up. the common problem descriptionhas been drawer will not open. button will be pushed by packing and willlock itself on top of the button guard.
SONY	SL2710	Distorted picture during playback	To visualize the problem, imagine a diagonal line drawn on theface of the monitor from the upper left corner to the bottom right corner.everything to the left of the line appears as viewed through a cloud.
SONY	SL5200	Burbly sound left and right channels	Burbly sound left and right channels, self or pre-recordedbeta hi-fi.
SONY	CDP200	Will not track disc properly - very sensitive	The unit will skip and miss complete tracks.
SONY	XR20	Mute problem	S802 (mute sw) not operating with every cycle of eject. lub-ing did not help. when lid was removed, it operated ok. with the unitmalfunctioning in tape mode, i loosened front mtg. screw under noise pieceuntil switch clicked on and then sealed screw.