TV Repair: Common Faults and Solutions.

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Repair Guide: Common Issues and Fixes

Brand	Model	Fault	Detailed Problem
SONY	D180K	Dead dcc-50 adaptor	Found the wires reversed inside the cigarette lighter plug.causes no damage to the unit. dealer replaced about three units (dcc-50)under warranty. -hq comments: we have received the sample you sent in, and haveforwarded it to tokyo. tokyo found that t
SONY	XR5000	Wire harness part number is incorrect	The part number given in service bulletin car 118 is in-correct. that cord will not work for the front and rear lines out.
SONY	KV27TS20	Picture bowed in on sides, replace c-566	Pin amp and phase control have no effect found open c-566. -hq comments: c566/4.7uf 50v is located off d514/pin damper diode.
SONY	CCDF45	Autofocus - hunting	Auto focus hunts.
SONY	CCDF55	Service manual correction	On page 81 connector at the bottom of the page labeled tova-46 board cn-406 should be labeled ...cn506. -hq comments: this is a misprint. thanks for the observation.
SONY	CCDF55	No pb audio	Unit had no audio on playback.
SONY	CFDD73	Low record/playback audio level with external microphone	When recording with an external microphone in the tape mode,the audio output from the microphone is barely audible. the audio outputis also extremely low on playback. when the unit is in cd, line in, orradio mode and the external microphone is connecte
SONY	KV2690R	Vc locked at 30v - no tuning, replace memory ic-105	Vc locked at 30 volts - no tuning. clock, data, latch pulsesare present. tuner ok with external vc.
SONY	XR747R	Eject mechanism recycles to play	Cassette eject mechanism does not lock in the ejectedposition. the eject plate number 358 is not being locked by the triggerplate number 354.
SONY	EVC3	No function/no reset	No function and no reset. checked 16mhz clock of the cpu andfound spikes and noise.
SONY	FD20A	Part number for battery lid is wrong, see sb242	The part numbers listed in the service manual are incorrect:manual says silver 3-314-023-21, manual says blue 3-314-023-31.
SONY	SLV353UC	High pitch squeal during operation	Grounding spring assembly to center of upper drum assembly isoff center. friction causes high pitch squeal while drum is rotating.
SONY	CCDF35	Distorted picture and mechanical squeak	Roller 252 was squeaking and replacement did not solve problem.
SONY	KPR41DS2	Intermittent convergence (blue), tab on yoke broken off	Intermittent customer convergence controls on blue only.
SONY	KV27XBR10	Intermittent video/audio, broken ground shield for ic-101	The set exhibited intermittent video raster, audio, pincushionand h voltage. found on foil side of (a) board shield over ic-101 brokeloose removing ground at pins 1, 2, 3 and 4 of ic-102/rom-1.
SONY	CDPC5F	Unit performs all functions intermittently	Intermittently, the unit would perform all functions, i.e.tray open, tray close, tray rotation, and pickup assembly up. at thispoint, the disc would not spin and unit would not function at all. thevoltage on the sense line to pin 22 of ic-505 and pin 1
SONY	STRGX10ES	Fm tuner bleeds through on other inputs	Fm muting is not strong enough. instructed by sdis to installservice bulletin no. hfp0102.
SONY	WMF701C	Preset tuning problem when using remote	Preset tuning will work fine on the unit, but will not workwhen using the remote switch.
SONY	CCDF55	No record or playback - grinding noise	Unit would load tape fine. when it would start to play orrecord, tape would start to move then unit would shut down and givecaution indicator (flashing eject symbol). a grinding noise was heardduring load and eject.
SONY	CDPC15ESD	No eject - intermittent	Disc number 1 in stack would intermittently not eject fully.higher disc numbers in stack would be more troublesome until disc 10 wouldnever fully eject.