Why does my monitor hum and buzz after I turn it on?

Asked by Trustinglife (6668

) March 25th, 2009

It’s a large Dell monitor, an old one, about 3.5 years old. Whenever I turn on my computer, or wake it up after it has been asleep, the monitor emits a loud buzzing sound. It seems like it’s coming from the connection with the plug, and when I fiddle with it manually, sometimes it stops. That’s annoying though.

What might be the source of the problem, and how do I make it stop?

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6 Answers

Is this the auto degaussing when you turn it on? if it is you can change it in the monitor menu. If not try re-wiring and replacing the fuse in the plug.

c_gunningham (286

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How do I access this menu on the monitor? Consider me a novice with this kind of technical thing.

Trustinglife (6668

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If it’s a degaussing pulse, it will be preceded by the click of a relay. You’ll also see the display wobble for a second. The Dell M993s monitor I have sitting in front of my now (mfd 2004) has 3 small buttons adjacent to the larger power button. The one nearest the power button brings up the menu. Auto degauss is selected through the Option submenu.

If your power cord looks like this, you can get a replacement anywhere. Try that. If it does not help, you can either live with the noise, or junk the monitor in favor of an LCD model you’ll be a lot happier with. Don’t want the expense? You can probably get a comparable CRT monitor from one of your neighbors for next to nothing or for free. People in my neighborhood just set them out with the trash.

IchtheosaurusRex (8681

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