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G4 marador startup

by gjkiii / May 19, 2009 10:28 AM PDT

Hello...when i shut down my computer the only way i can power it up is to unplug the power supply and then plug it back in....only then will the computer power back up by pressing the power button. Does anyone know what might be wrong? Thank you

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I've seen it be just a few parts.
by R. Proffitt Forum moderator / May 19, 2009 11:08 AM PDT
In reply to: G4 marador startup

The power supply and the main board. Sadly we had to swap one then the other to figure out which one. Hopefully someone else will have a cheaper idea.

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Things you could try.
by mrmacfixit Forum moderator / May 19, 2009 9:57 PM PDT
In reply to: G4 marador startup

1. Replace the battery on the logicboard.
2. Reset the logic board by removing the battery, disconnecting the power cord, pressing the "ON" button and then leaving the whole thing to just sit there for 30 minutes.
Then, press the CUDA button, next to the battery. (Looks like a small square metal thing with a very small pencil eraser in the middle of it) Press it ONCE
Replace the battery and power cord. Fire it up.

See if it makes a difference.

Let us know.

BTW, your machine is a Mirrored Door G4


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