Question about RCA F32650 32" TV

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RECOR COLOR TV dead high pitch whining noise

Hi have this problem with CRT tv model no: RC-4120PS, powersupply is whining.No high voltage ,no scr. voltage however the power LED comes on with the whining noise.There's also no voltage going to the Horizontal aswell as the vertical yoke.Have traced the whining noise to the high freq transformer not lopt.

The voltage going to the collector of the HOT is correct 135V but drops to 93V when I press the power switch, there's also otputs on two 25v, 470uF ecaps. of 10V each.

I have serviced a few tv's before

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  • Mike Christiansen Oct 28, 2008

    when i plug in the tv i get a high pitch whining noise. i'm not a tv repair specialist. is this a diy fix or does it need professional service?

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You have a short in the horizontal ckt,look for diodes,horizontal output it might be damage or a bad cap, if not the fly-back transformer is gone.

good luck


caypianan@yahoo.com

Posted on Oct 27, 2008

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