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

I have noticed a high pitched noise for a few weeks now, and I was able to pinpoint the issue to the LCD screen on the receiver. When I change the dim settings for the LCD screen, the tone of the noise changes. It is the deepest on max dim and the highest pitch on no dim. Also, I plugged the receiver directly into the wall (as suggested by Sony support), and that did not change the high pitched noise issue. Are there any other possibilities that could be causing the high pitched noise? Any help is appreciated. Thanks.

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  • Ben Boston Feb 20, 2012

    The problem is not with the TV; it's with the Sony A/V receiver model listed in the title. Do I need to open the receiver and check the backlight inverter board?

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  • Sony Master
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Hello
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.
This board can locate on the right or left side of the panel, fitted vertically.
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Posted on Feb 18, 2012

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SOURCE: Sony str-dh510--I have very low volume from my

This model requires a "Phono" input. This will give you the best sound. Once you hook it up correctly, make sure the volumn is down or you will blow the amp.

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SOURCE: Can I connect a passive

No. Like most AVR's it only provides a Line Level output for an externally powered subwoofer. Get a separate amp for the sub.

Register and download the manual for free at retrevo.com

http://www.retrevo.com/support/Sony-STR-DH510-Receivers-manual/id/23637ci375/t/2/

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SOURCE: There is an intermittent, high-pitched

I've had variable track lighting cause a similar problem and only with analog sources. Is it only with track lights on?

Posted on Sep 22, 2011

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