In the first part of this 2 part video, I show you how to take apart your Intel i Mac and get to the main board and hard drive. This WILL void your warranty.
Identifiers: Late MA456 LL - i Mac6,1 - A All i Mac Models | All 2006 Models | Dynamically Compare This Mac to Others Distribute try a PDF search on Google. Follow the instructions in the manual, and take almost everything out of the computer. Next, drill some holes in the back with a hole saw - the important holes are marked in the above-linked picture. Finally, install smc Fan Control, and crank up the fans. This modification makes the computer loud, but the processors consistently run at 35 Celsius, and the computer doesn't crash. I haven't tried turning down the fans yet, but it's been running for weeks without a problem. [robg adds: I would not advocate this solution myself - I'd either take it in for service, or donate it to someone else who could have it serviced. However, to each his/her own, and the above solution is basically free.].
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