Question about Sony BRAVIA KDL-32S2000 32 in. LCD HDTV

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Sony flat screen

I have a Sony flat screen HDTV and it has a constant high pitch noise in the background, very annoying. How do I fix it?

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Turn off the tv

Posted on Jun 05, 2008

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Posted on Jan 02, 2017

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High Pitched Noise Coming from Sony STR-DH510 LCD Screen - how to fix?


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The problem is with its backlight inverter board. there are some step-up transformeres [small ones] fitted on board. If any one's core bacome loose this fault will occur. Just open the TV and listen to which one makes hi-pitch noise. Replace it, if you can buy it from the electronic market at your town. In most cases, the inverter board needs replacement.
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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.
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1 Answer

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