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Old November 18, 2008, 08:25 AM
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Default Low (as in not loud) hi pitch noise from SyncMaster™ 2693HM

Is it normal for my LCD to give of a low, Hi pitch sound? my LCD is Samgsung SyncMaster™ 2693HM.
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Old November 18, 2008, 09:20 AM
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Absolutely not, they should be 100% silent as most these days don't even have a fan.
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Old November 18, 2008, 10:00 AM
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Does it change pitch as the screen gets predominantly lighter or darker?
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Old November 18, 2008, 10:19 AM
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Quote:
Does it change pitch as the screen gets predominantly lighter or darker?
Yes that is exactly it when I chance the brightness it gets louder and darker the noise gets louder or quiter
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Old November 21, 2008, 07:14 PM
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I've got the same one and I can't hear a thing.
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Old November 21, 2008, 09:51 PM
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Found this article

How to stop the whining noise of your LCD monitor | silentpcreview.com

Basically turn the brightness up full on the monitor using the monitor's controls and then use your video card software to turn down the brightness. It is something in the monitor's electronics that creates the whine when dimmed. Using the vid card's controls doesn't affect the monitor's electronics.
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Old November 23, 2008, 07:23 PM
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It is quite common. It's the vfd variable frequency drives. your 120volt ac is fed through the wall at 60hz. It gets converted to DC and then back to ac with the cycles varying with the output. You get a lot of white and you can hear the vfd cycling at some god awful speed. My plasma does this when i am using the htpc and surfing, doesn't for movies.
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