TV Repair: Common Faults and Solutions.

Search:
Results: 87416

Repair Guide: Common Issues and Fixes

Brand	Model	Fault	Detailed Problem
SONY	KV1510	Part's compatibility	When subbing the 1-463-109-00 tuner with the 1-463-132-00,the channel indicator numbers go down when they should go up and viceversa. -hq comments: replace the original tuner. in addition you have to orderdial drums from kv-1511: s/m page 32, p/n 4-31
SONY	KV1205	Intermittent shut down, replaced q509	Found q509 (hv protect) breaking down. replaced q509.
SONY	FD210	No picture, resoldered c653	This unit had no picture and received fm stations instead oftv freq. a quick examination of the power supply revealed that the 14vand 40v (tuning) lines were very low (6v). we found the connection onc653 to be poor. this is the coupling capacitor betw
SONY	VTX1000	No tuning operation	Would not tune any channels. vc voltage to tuner remainedhigh. no pulses out of the ic001.
SONY	KX2501	Intermittent shut down, replaced hv block	Intermittent hv shutdown.
SONY	KX2501	No picture, replaced ic1201. r668, and r676	This unit had a washed out picture with no control of pictureor volume. also unit had no audio out.
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).