How do test a G5 logic board?

A

Art Beatz

Registered
Just wondering if it's possible to test a logic board on a G5? I've installed new ram and it wont work, so I reinstalled the original ram, and it still wont work. While searching google I found it could be the logic board (for some reason may have become damaged).
 
I'm pretty sure that with most the iMacs, if you have bad ram, it will beep at you when you start it up.
 
The number of beeps and flashes at startup also helps to nail down it a bit more.
If you have changed hte original RAM back and it still flashes, reset PRAM (hold apple+alt+p+r letters at startup until you hear the startup chime for the 3rd time). That might clear it... if it still does the flashes, run the hardware tests.

http://macosx.com/forums/howto-faqs...are-test-other-diagnostics-test-hardware.html for details. I'd always recommend in looped mode, and at least for a few hours. If there is an error message, note it down and post it here for decipher.
 
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