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Old Jun 6, 2008, 02:33 PM   #1
TommyLee
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Unhappy :rolleyes: once again... POWERBOOK G4 STARTUP PROBLEMS!

I shut it down last night and tried to turn it on today, but to no avail.
The only signs of life I get is the hard drive quitely hums when I start it up and the green caps lock light works.

I get no chime, no screen activity and as far as I can hear with my ear pressed up to the case, no hard drive activity except for the platter spinning. (no clicks or ticks)

In an attempt to fix this problem i have performed the following steps
-reset power PRAM, and NVRAM
-reset Power manager
-disconnected all usb/firewire/ext devices
-tried starting in target disk mode
-tried booting from CD.

help me obi-won, you're my only hope.
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Old Jun 6, 2008, 02:39 PM   #2
iToaster
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If it doesn't pass the POS test, power on self test (piece of test)... startup chime indicates passed, it looks like you have some logic board problems.
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Old Jun 6, 2008, 02:42 PM   #3
Consultant
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Turn on, hold option, put OSX DVD in (if you have DVD drive), what happens?

I was going to say HD failure. But if even optical cannot boot, then it might be logic board?
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Old Jun 6, 2008, 06:57 PM   #4
TommyLee
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Quote:
Originally Posted by Consultant View Post
Turn on, hold option, put OSX DVD in (if you have DVD drive), what happens?

I was going to say HD failure. But if even optical cannot boot, then it might be logic board?
I am also guessing logic board, because it's showing all the signs that the service manual says, but I'm scared of buying a new one for nothing.

Other than the logic board, what could it be and how do I determine what it is?
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Old Jun 7, 2008, 04:58 PM   #5
TommyLee
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jump!
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Old Jun 7, 2008, 06:16 PM   #6
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Quote:
Originally Posted by TommyLee View Post
I am also guessing logic board, because it's showing all the signs that the service manual says, but I'm scared of buying a new one for nothing.

Other than the logic board, what could it be and how do I determine what it is?
Apple Store Genius Bar. They'll let you know what it is, and how much to replace it. My iBook's logic board failed. for $299 I got a new logic board, hard drive, and (after first returned it wouldn't find the hard drive) a new battery to boot!

Mac Service
seems to be a reliable source as well. I'm thinking of upgrading my harddrive with them.
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Old Jun 8, 2008, 01:51 PM   #7
TommyLee
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i have never met a "genius" at the apple bar!

hey, where do i buy a cheap logic board?
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