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Bericht: Antwoord op "My iMac G5 is Overheating and crashing when...
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My iMac G5 is Overheating and crashing when using heavy graphics.

My iMac overheats and then crashes when running heavy graphics or flash content. I ran the ASD and it failed the graphics test. As well there are red dotted lines across the screen. I am sure the graphics card has failed but that would mean replacing the motherboard, correct?


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This is a fairly well known problem. A lot of these had solder problems with the video card. This is a very difficult repair and requires a component level tech. To work around the problem I would open it up and use some canned air to clean the fans and vents as much as possible. Here's some links to other answers on this problem:

There are vertical lines in my screen..

replace logic board with core duo?