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Make	Model	Symptom	Problem
SONY	KV2654R	Shut down, replace q501 and q502	If set was turned on with 120vac, horiz. output would shortout within 2 to 3 seconds. removing collector b+ off horizontal outputi was able to bring set up to 120vac and observe the driver output. foundwaveform to be distorted, should look like a squar
SONY	KV2649RX	Bad reception on cable	If the cable signal coming into the distribution amplifierbeing used by the dealer is disconnected and reconnected, the channels onthe kv-2649rx come back extremely detuned, and can only be received if youaccess another channel and the set is ok. -hq co
SONY	KV2649R	No power and tuning operation, shorted d021 on mt board	Unit could not be powered off nor any channels changed,display locked on channel 11, reception was normal.
SONY	KV2648R	Buzz in audio, adj aft and sound if	Buzz on some channels in audio.
SONY	KV2647R	Jail bars on the screen	This unit had very faint jail bars on the left side ofpicture. d250 zener voltage - 13.21 volts. 12 volt line - 12.61 volts.
SONY	KV2644R	Intermittent time display, replaced neon tube nd3051	Time indicator display would go out intermittently. found bytapping the neon tube when the set was cold, i could cause the problem tohappen. but after the set warmed up, could not produce the problem.
SONY	KV2643R	Jail bars on the screen, replaced c539	This unit had jail bars across the screen.
SONY	KV1954R	No turn off, replace ic001	Dealer noticed he could not turn off the set, which was ondisplay. none of the other functions worked either. after discussingwith the dealer i suspect failure was caused by static electricity.
SONY	KV1954R	No audio, replace reg ic601	Not audio.
SONY	KV1953RS	Bad reception, replace band sw ic002	This unit did not have the proper band switching voltages.we found the input to ic002 correct but the output was incorrect.
SONY	KV1952RS	Picture distortion, replace ic003	The frequency would change intermittently. you could freezeic005 on my board and then it would look up. pin 4 of ic003 on my board has an incorrect voltage.
SONY	KV1952RS	Snowy picture, c537 shorted	Snowy picture on all channels. worse on low band. found-30v line to be missing, i.e. 0v.
SONY	KV1952RS	Snowy picture, replace ic005	Snowy picture. no vc. this unit had output from the localoscillator but was not being divided down in the prescaler. there was nooutput at tp61. we found ic005 - prescaler/pll ic to be defective.
SONY	KV1952R	Dead, d601 open	No b+ regulation. found one rectifier in d601 opened (noresistance reading).
SONY	KV1948R	Brightness change, cable signal problem	Going to or going from ch. 13, the brightness will change.
SONY	KV1947R	Snowy picture, replace pll ic005	Unit does not tune - only snow. no pulse output from pllchip ic005 into active filter.
SONY	KV1947R	Intermittent color, l342	This set had intermittent color from date of purchase.tapping on a board would cause color to come and go. following colorsignal path with scope revealed the loss of color at output of l342.in checking this coil withΩmeter, i verified that in fact, t
SONY	KV1946R	No vertical deflection, replace c526	No vertical sweep. there was no sign of a sync pulse atpin 19, ic501. dc voltage was ok at this point. sync pulse was presentat pin 21, ic501. found c526 to be leaky.
SONY	KV1946R	Poor vertical deflection, replace c524	This unit had only about 2 inches of vertical deflection. wefound the voltage at pin 13/ic501 to be very low (0.8v). output from thedriver was also low. we found c524 to be leaky. this is an importantpart of the vertical sawtooth generator.
SONY	KV1945RS	No picture, replaced ic006	Unit fails to tune or show any numeric display on fluorescenttube - just snow on screen. servicer replaced microprocessor. lines forreset constantly high, ic006 bad - actually labelled ic004 on that model.