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Frankieboy

 
Member Since: Apr 22, 2011
Posts: 1
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Brilliant! Had my new iMac for just over a week when I noticed this low-pitched annoying hum. Didn't remember it being there when I first booted up. Anyway, checked lots of threads here and was on the verge of reluctantly returning my machine when I came across your post. Tried lifting the machine as you describe and it went! I have a hard floor and desktop and the sound was entirely caused by reflected vibration. Have just put some felt feet under the base and it's now virtually silent. I see Amazon also sell cheap 'vibration-free feet' for exactly this purpose. Thanks for posting your solution, you certainly saved me considerable time and trouble.
QUOTE Thanks