Mine does. Seems like the body starts resonating under the influence of the spinning hard drive inside it after it warms up. Really annoying to have that source of noise on your desk right in front of you. I took it apart and tried to suspend the hard drive better, but nothing helped. What did work was wedging a piece of wood between the bottom surface of the monitor and the mounting bracket. Like a short vertical post, which must be 56-57mm long for 24" iMac if anyone wants to try it. As much as I hate this kind of "electrical tape" solution, it does the job that Jobs could not do.
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Does your iMac make low humming noise?
- Thread starter alik55
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