TV Repair: Common Faults and Solutions.

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Repair Guide: Common Issues and Fixes

Brand	Model	Fault	Detailed Problem
SONY	CPD1201	No red, green or blue output on screen	No blue output on screen. found q703 shorted base to emitter.also q325 shorted emitter to collector.
SONY	KV25XBR	No picture, sound. screen display indicated picture	Screen was black. remote inoperative, front panel controlsinoperative except for power on/off. only thing that screen displayedpicture.
SONY	KV20XBR	Unit stayed in rgb mode and sleep	Unit stayed in rgb mode and sleep. remote inoperative, frontpanel controls inoperative except for power on/off. screen black.
SONY	CCDV8	P/n request-evf bracket	Do we have a part # for the metal bracket on the bottom of theelectronic view finder? -hq comments: the evf lower cabinet assy comes with the part you want.order part number x-3686-662-1 as per s/b #232.
SONY	KV2602	Cable tv scrambling	Approx. 20 customers in st. louis with kv-2602encing dark picture with color smear and predominant red chroma on cabletv. they were scrambling all channels. the system used is mfg by jerroldand is similar if not the same as the equipment outlined in th
SONY	BMC110	Part number	Need part number of item slightly above to the left of no. 153on page 94 of s/m. -hq comments: the part number is 3-681-511-00. this correction alongwith other part number additions can be found in supplement 1.
SONY	TCK501R	Play won't engage	When play is depressed in either direction the head chassisdoes not move, subsequently the pinch rollers will not engage. foundr562 improperly installed. one end of the resistor was not insertedinto the circuit board, therefore was not soldered to the
SONY	KV2665	No video/audio, 9v reg q-204	No video and audio.
SONY	FD2A	Missing part # for dial pointer in s/m	Missing part # for dial pointer in s/m. -hq comments: the dial pointer is a part of the front cabinet.
SONY	ITA600	Incoming message tape does not stop	Customers claim incoming message tape will not stop aftercaller hangs up. one unit, the ita-600 is used in phx area, the ita-500came from colorado springs. using b & k 1050 phone analyzer i could notduplicate problem in either machine. -hq comments: t
SONY	CDP70	Audio sound distorted followed by shut-down	Unit would accept disc, do focus search and apparently readtoc. when play mode entered unit would start to play with distortedaudio, then it would stop in a few sec. viewing eye pattern on scoperevealed distortion.
SONY	KX1901	Alternately dark and light horizontal bands appears	Alternately dark and light horizontal bands appeared in top1/6 of picture after warm-up.
SONY	PSLX510	Intermittent erratic speed	After warm-up, speed (33rpm) would intermittently becomeslightly erratic. the locked light would turn off. customer had unit ontop of his amp. which supplied additional heat. we found q103 to beslightly thermal which upset bias of ic102/p6 servo amp.
SONY	SLHF500	No video in playback mode	The unit worked in all functions except play. in play modethere was no video. we found the problem to be caused by q2 on ss-32 bd.this transistor was open therefore there was no pb 9v.
SONY	FD2A	Int focus, replaced flyback	Harlan mauer of the mpls. ssc reports fd-2athe problem is traced to a defective flyback.
SONY	CCDV8AFU	Picture shakes side to side on playback	Drum locked but speed is erratic. tf4 osc not present online 15 of drum drive ic.
SONY	CCDV8AFU	Audio mute	No audio. traced problem to c405, ar-1 bd. dc voltage vary-ing on pin 4 ic101.
SONY	WMF12	Play button jams	Play button does not come out of play position.
SONY	KPR4600	Unit dead, replaced ic-301	The unit is dead.
SONY	CDP70	Service manual errors	1) q102 collector is shown on the schematic to connect toq101 emitter. it actually is connected to b- as shown on the boardlayout (the emitters of q101 and q102 are tied together). 2) c132polarity is shown reversed on the board layout.