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High pitch noise RCA 52 inch HDTV

Turns on great pic. but has a high pitched noise to it. TV 2 and a half years old. Is it worth fixing.

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4 Suggested Answers

  • 52 Answers

SOURCE: High pitch noise

Hello there, You have to specify where the noise is coming from. Is it coming from the speaker or from the back of the unit. SMPS power supply powering your unit create this kind of noise when some capacitor gone out of their value.

Good Luck.

Posted on Jan 29, 2008

  • 207 Answers

SOURCE: High Pitch Noise on 42" PLasma Gateway TV

how old is your plasma TV? try check the switch / volume of the sound settings.. Sometimes, when you always increase the volume, it will tend to alter the limit of sound and causing the sound to provide sound undesiredness. I suggest to check it with a liscensed technician.

Posted on Feb 05, 2008

  • 476 Answers

SOURCE: Hi: My Magnavox flat screen turns

Hello, what's the model or size of screen for the magnavox, the high pitch noise could be an audio power amp starting to get intermittent, and the power on/off could be due to the over current sensor circuit detecting the audio problem. Depending on the model number you would have a seperate power, audio and signal board in the TV. If he TV is 27" or smaller all these circuits are part of a mother board.

Posted on Jul 28, 2010

  • 5138 Answers

SOURCE: I have a 52 inch

What is the model number that is printed on back of TV? If it is the one Im thinking it is problem will be coil causing squealing noise. I can tell you more once I know which Model your TV is. Thank You

Posted on Jun 26, 2011

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`How do I fix my LG tv? It's making a high pitched noise and there is a black screen, is it fixable?

Get it to a tv dealer but my guess is its died. It may not be economical to repair but you may be pleasantly surprised and its a small job. LG are usually pretty good so I'm surprised its gone at this age.

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My RCA 50'LCD HDTV screen crack,I'm looking for a new sreen.

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Panasonic TX32POL1 high pitched noise

The high pitch sound is comming from a power supply transformer that will resonate (or vibrate) at the operating frequency (12-14KHz).
This is usually affordable to repair -at least worth the estimate.

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Buzzing sound after only 2-1/2 years of service

I suspect you have a bad set of capacitors in the control module. This problem usually starts out as a high pitched noise but can lead to the TV not turning on. Please see the link below, posted by StivO. It gives step by step instructions on how to replace the capacitors. This is a very inexpensive fix.

Apr 13, 2009 | Polaroid FLM-3734B 37 in. LCD HDTV

1 Answer

High pitched noise

I am about to post a in depth guide about how to fix this problem. It's because a capacitor inside the TV has blown which causes the buzzing high pitched noise. It's really easy to fix however and only costs about £1 / $2 to sort out.

You can read a similar guide here but I will shortly be uploading a guide on the buzzing problem!

Dec 22, 2008 | Polaroid FLM-3732 Television

1 Answer

High pitched noise on Polaroid HDTV

It appears like your power supply is not filtering the voltage properly and that is why you are hearing that high pitched noise. If your LCD is less then a year old, you can call Polaroid to have it repair under warranty.
If more then a year old, check the info from this link to replace the capacitors.

Let me know if you need further assistance.

Oct 07, 2008 | Polaroid FLM-3734B 37 in. LCD HDTV

2 Answers

High pitched noise

The power supply is starting to fail on your LCD. The noise you hear is because the circuit is trying to provide the proper power to the rest of the circuitry and is forcing itself.
The noise does increase if you tune to an HD channel because of more demand for power for a brighter picture.
Let me know if you need further assistance.

Sep 18, 2008 | Polaroid FLM-3734B 37 in. LCD HDTV

1 Answer

High pitch noise

Hello there, You have to specify where the noise is coming from. Is it coming from the speaker or from the back of the unit. SMPS power supply powering your unit create this kind of noise when some capacitor gone out of their value.

Good Luck.

Jan 26, 2008 | Samsung LW26A33W 26 in. HD-Ready LCD...

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