1779 Views 4 Replies Latest reply: May 4, 2008 6:19 PM by lenn5
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.