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Apple Desktops Discussion of Apple's desktop machines including Mac Pro, iMac, Power Mac, and mini

Logic Board Problems

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If your G5 iMac is not running as it should:

Unexpected shutdowns
Video distortion

It could be the your logic board is fryed. To check that your logic board is healthy.

Open up your iMac (unscrew the 3 screws) If you look at the logic board you will see that there are a number of capacitors connected to it. ( These look like mini batteries) If any of them have a bulge on the top, then thats what your problem is and you need to take the machine to an apple store to get repaired.

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Not only do some bulge, some will display brownish gunk on them.
I've seen my fair share of them on PC's. I've also replaced my fair share of them too.
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Member Since: Aug 19, 2005
Location: Oregon
Posts: 41
talleyrand is on a distinguished road
Mac Specs: 3 Ghz i3 iMac, Macbook Pro, Old G5, iPhone, iPad, and a drawer of iPods

talleyrand is offline
My logic board was bad. It was a cold solder on a DIMM slot though.....
Was very hard to diagnose.
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