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 Post subject: Powerbook G4 Titanium 500MHz - will not turn on
PostPosted: Sun Oct 05, 2003 10:13 pm 
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Joined: Sun Oct 05, 2003 10:05 pm
Posts: 1
I have a Powerbook G4 Titanium 500 MHz computer. It will not do anything. Will not turn on... will not charge battery. When power adapter is inserted, the ring is red (orange).

I have tried booting it with the battery installed and without the battery installed. It does nothing.

I have also tried resetting the PMU by pressing the reset button while the battery and power cord are removed from the computer. This did not help either.

I tried resetting the PMU with power sources.... again nothing.

I tried starting the holding the power button and Command-Apple-P-R.... still nothing.

Any suggestions???

P.S. my battery has no charge...

Is there a way to test whether the PMU or the mainboard are bad??

Could it be the backup PRAM battery??? note: the computer has sat on a shelf for 7 or 8 months untouched.... (it does not belong to me... I would have been using it).


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PostPosted: Sun Oct 05, 2003 11:57 pm 
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Joined: Mon Feb 24, 2003 1:58 am
Posts: 940
From what you describe, you're looking at either a bad logic board or PMU board. Most likely the logic board is the culprit. The only way to test is to change out the parts.

-Bradley
POWERBOOKMEDIC.COM


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