03-31-2010, 09:02 PM

I own a 20" Mid 2007 2.4GHZ IMac that over the last 3 or 4 months have been giving me problems such as shutting down from time to time and starting right back up. Most of the time I found this doing it if you hit the desk with your knee or something similar. I took it to the Apple Guru's and they told me the logic board, hard drive, optical drive all need to be replaced. I didn't fix it as they wanted 800+ to repair. I took it home and it worked ok for a while and started doing it again, now it wont turn on at all? Any suggestions? I took it apart and looks like Apple never even opened it as it looked un touched. Capacitors look fine but I LCD Heat Cable was pinched pretty hard next to the fan could this cause this problem? I am also thinking of having the board repaired than replaced as most things i've read they say to repair the one you have. Any thoughts?

03-31-2010, 11:03 PM

Theses machines have heat sensors on the cpu...if they go bad the machine shuts down.
Just a thought.