Anyone own and LCD monitor that is silent with 100% brightness but noisy below 50% brightness?

MikeHunt79

MikeHunt79

MikeHunt79

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I have 3 LCD screens that do this, but buzz annoyingly when I lower the brightness. Does anyone have this problem and is there any way of fixing this?
 
It's not uncommon - the way around it is to set the monitor to just outside the "buzz threshold", and then do any display tweaks in the display options for your graphics card.
 
powelly2010 said:
i have this problem with one of my 19inch's but thats when i change contrast above 70?
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My Samsung 19" screen does this, yet my Viewsonic 19" screen does not... It's good to know it's not just me experiencing this issue...
nightrhyme said:
Heard of some. The Dell U2410 crapscreen comes to mind. Just read dell forums: http://en.community.dell.com/support-forums/peripherals/f/3529/p/19306798/19598346.aspx
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I'm down to a single screen now, a Dell 2405FPW, which buzzes above 50 brightness, it's a shame that after 5 years they're still suffering from this issue!

I'd love to fix the buzzing on my Dell, I just need to find out what is causing thee buzzing. It's most likely the backlit inverter...
Makhaira said:
It's not uncommon - the way around it is to set the monitor to just outside the "buzz threshold", and then do any display tweaks in the display options for your graphics card.
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How do I do this? Use my Dell screen with both a Mac and a W7 PC so I'd need solutions for both OS'. :)
 
No idea on a Mac, but on W7 just head to the properties section of your gfx card (nVidia control panel or aTi CCC) and under one of the tabs there you can alter colour balance, brightness, contrast etc.
 
All that will do is dull or wash out the image - it doesn't actually change the intensity of the backlight. You could give it a go but I don't think you'll like the results.
 
Makhaira said:
No idea on a Mac, but on W7 just head to the properties section of your gfx card (nVidia control panel or aTi CCC) and under one of the tabs there you can alter colour balance, brightness, contrast etc.
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To clarify, you do this part AFTER you have used the physical controls on the monitor to set it just outside the point where it buzzes. You're then using your graphics card to compensate back to the image you want.
 
PCM2 said:
All that will do is dull or wash out the image - it doesn't actually change the intensity of the backlight. You could give it a go but I don't think you'll like the results.
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Ok, I did try reducing the brightness in the Nvidia control panel and upping the brightness on the monitor, and while the buzzing noise did vanish, the picture didn't look good and also my Mac is now blindingly bright. :(
powelly2010 said:
same ;) im glad im not the only one
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The fact that it is more than one brand is rather annoying, if there was a particular brand that was known to make quiet screens then I'd choose that over Dell/Samsung/etc.

I do hear these newer LED screens are much quieter however, I guess the fact that these LED backlit screens do not have a high voltage high frequency CCFL inverter means that it's most likely to be the backlight inverter that is making this annoying noise.
Makhaira said:
To clarify, you do this part AFTER you have used the physical controls on the monitor to set it just outside the point where it buzzes. You're then using your graphics card to compensate back to the image you want.
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Well, it did sort of work, but I'd really like to find some way of fixing the monitor really so I can use the lower brightness settings without the buzzing...

If I get some time I think may have a look at the backlight inverter.... I'm 99% sure it's that is buzzing.
 
It is the inverter, but it's common with cheap inverters, it's not a "fault" per se. You could try replacing it, let us know how you get on.
 
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