4 Replies Latest reply: May 4, 2008 6:19 PM by lenn5
shalafarky Level 1 Level 1 (130 points)
Please help - my 24" white iMac (2.16 GHz intel core 2 duo) intermittently makes a buzzing noise that sometimes goes away briefly when I adjust the tilt of the unit or apply upwards pressure on the bottom of the unit with my hand. I've read the threads on fan noise, but I don't think this is relevant given that it can go away with physical pressure to the unit - this makes me think the iMac is somehow mounted loosely on the stand. Is there a way to tighten this... am I completely off base?

Thanks in advance for your replies

24" iMac Intel Core 2 Duo with 3G RAM, Mac OS X (10.5.2)
  • NCPhotoguy Level 1 Level 1 (140 points)
    Have you had the internal hard drive replaced?
  • shalafarky Level 1 Level 1 (130 points)
    no i haven't - are you suggesting i do or just ruling something out?
  • NCPhotoguy Level 1 Level 1 (140 points)
    Just trying to isolate your problem.

    My gut feeling is that you have a loose fan cover that directs the warm air out of the bottom of the iMac. I have absolutely nothing to prove this other than your saying that changing the angle and/or pressing on the bottom of the iMac introduces a change in the behavior.

    If this is in fact the problem, then there is little to be done unless you have Applecare, as your opening the case will void your warranty.

    On the other side of the coin, if I am correct, then there is little harm to come of it.

    When I replaced the HD on my 17" white iMac, I had to make sure the case was well seated when I reassembled it.

    Hope this helps.
  • lenn5 Level 4 Level 4 (2,530 points)
    Sounds like the same problem I have. My iMacCore Duo 1.83 just started making a buzzing noise this week. If i tap on the case near the Apple logo it goes away for a while. Kinda annoying...

    lenn