Question about RCA F32TF720 32" TV

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Hissing noise My RCA has a very distinct hissing noise coming from the back. I have heard other people complain about this online but have yet to see a cause or a fix for this problem. Please help if you can. Thank you.

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Re: hissing noise

Your tv is not properly tuned or reset it once & then see some improvement or your input signal is weak or loose connection near input.

Posted on Oct 01, 2007

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is the sound like hissing or like a spark something like?hissing can caused by leaking of high voltage that is dangerous and sould be fix right away

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I have an RCA model 20V500T television. There is an arcing noise coming from inside the back of the television. When this noise occurs a couple lines appear and disappear on the television screen. What...

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I have a RCA Scenuim Rear Projection TV that is 3 years old. It has a loud whining noise coming from the back. What is causing the noise and is it worth fixing the tv.

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1 Answer

Same problem, high pitched noise over regular sound and no pictur

No guarantees with this diagnosis. But it sounds like an HT ( high tension) leak This is often caused by the lead becoming partly unplugged ( being bumped or moved) and because of dust buildup it arcs making a high pitched hissing whistle.Ther lamp may also have been affected by the HT leak. The safest option for you is to call a service technician to it, as opening it up could cosntitute a a danger to the unskilled.

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Did you check the Horizontal Output transistor to see if it were shorted, and also check the MOSFET of the switching power supply. 

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1 Answer

Rca arcing and hissing

Most likely,you have a bad transformer AKA flyback ......
Is 32V420TYX6 the service # of your TV ?......Verify..........T.

Apr 05, 2008 | RCA 32V420T 32" TV

1 Answer

Yet another hissing/buzzing noise from back of TV

Good day.

Check for the horizontal output transistor, flyback and filter capacitors.
Any of these being shorted can cause the problem.


Jan 20, 2008 | RCA F32TF720 32" TV

1 Answer

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1 Answer

Powers off by itself

Usually leaky power supply diode and two bad caps-----need service # and chassis # from sticker on back of set .....T.

Jan 22, 2007 | RCA 32V420T 32" TV

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