TV Repair: Common Faults and Solutions.

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Repair Guide: Common Issues and Fixes

Brand	Model	Fault	Detailed Problem
SONY	TCW3	Muting problem	Unit was muted on both decks. however, with deck a in playmode, pushing deck b play, ff or rwd buttons, unmuted deck a. pin 42 ofic303 was low. d317 is not in the circuit nor is the foil pattern whereit is shown.
SONY	ICF2001D	No tuning fuctions, display goes to 150khz	Unit will not tune. display will get stuck at 150 khz. foundcracked c118 on pll.
SONY	SL2710	No tuner mode	Unit would not operate in tuner mode. channel indicator ledwould not light up and no picture on monitor.
SONY	SLHF1000	Pix distorted during self rec pb of computer signal	When recording off an apple iie computer, during playbackthe unit exhibits severe horizontal tearing. i contacted apple and foundthe iie operates at 15,700hz horiz/non-interlaced, and 59.92hz verticalfor the composite output. -hq comments: i checked th
SONY	KV1961	High pitch hum (int), jumper wire vibrating	Intermittent high pitch hum, loud at times coming fromlocation of flyback.
SONY	KV2771R	Audio popping, replace c-140 on "a" board	This unit had intermittent popping in the audio.
SONY	CCDV8AFU	Ps601 blows	Blows fuse ps601 on mc-4 board after 4 hours operation withac-v8uc ac pack. applying logic analyzer to e and b of regulator q619received a positive pulse on both elements when the fuse blew.
SONY	CDPC10	Low level hum	Unit puts out a low level hum, easily heard in play pause withvolume turned up high.
SONY	SPP100	Noise heard on handset	Customer complained he heard noise coming through handset.by disconnecting c416, it was determined that the base unit was transmit-ting a noisy signal.
SONY	XR27R	Radio intermittently shuts off by itself	Bad solder connection on d525. the hole is too large for thelead size. the solder does not make total contact around the hole and thelead.
SONY	SL2700	Brake solenoid would not engage	Brake solenoid would not engage, brake solenoid opened.found problem to be a leaky switch (q332) causing forward bias on q309.
SONY	CCDV8AFU	Scrambled pix	Intermittent scrambled pix. could hear rattling in unitwhen moved.
SONY	CCDV8AFU	No video rf	No video out on vhf-rf.
SONY	CCDV8AFU	Eject led and noisy motor	When using ac adaptor, eject led flashes. motor noisy onbattery operation.
SONY	CCDV8AFU	No record	Flashing eject led, will not stay in record mode.
SONY	CCDV8AFU	Bad pix	Pix fuzzy on playback. eats tapes.
SONY	CCDM8U	Bad playback	Bad playback. tape jamming.
SONY	CCDM8U	Dark playback	Playback from recording darker than pre-record.
SONY	BMC220	Playback video	No video during playback mode.
SONY	CCDV8AFU	Distorted pix	Picture distorted.