Jan 20, '10 07:30:00AM • Contributed by: Scooper
If you want to do this yourself, you'll have to locate a service manual for the iMac (20-inch Late 2006); 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 smcFanControl, 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.]
