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TICKET ARCHIVE -> Powerbook Ti G4

bhudson33 - Nov 22, 2005 - 9:31 pm

I have a powerbook Ti G4 running 10.3.9. Recently, it started
not waking up from sleep. It would require a hard reboot.
IT won't boot 80% of the time either. I can hear it start up,
but no gong sound, nothing. The fan eventually runs.

Sometimes when it does boot, it goes into open firmware
mode and there is an invalid memory access line there.
Sometimes, when in open firmware, there is no invalid
memory access line.

I have tried resetting the PMU (pushing the button under
the keyboard - upper right hand side). I have tried
the following commands:

> set-defaults
> reset-nvram
> reset-all

I ran the hardware che4ck when I booted with 'c' down and
everything passed including the ram tests.

nothings seems to get the system into a 100%
boot up state.

Any ideas?

Cheers,
Bill.

edadams - Nov 23, 2005 - 11:37 am

Bill

Do you have any 3rd part RAM installed?

If yes, then can you try to remove it?


Also try a PRAM reset-
http://docs.info.apple.com/article.html?artnum=2238


--------
Regards
Ed

bhudson33 - Nov 23, 2005 - 3:29 pm

Ed,

I do not have any 3rd party ram installed. In fact,
the RAM in the machine has been there all its life.

I tried the PRAM reset, PMU reset, NVRAM reset.
Still the same situation.

Any other ideas?

Cheers,
Bill.

edadams - Nov 23, 2005 - 4:26 pm

Bill

My next advice would be to backup and re-install OSX.

If that does not help then it should go to an Apple service centre to get the logic board looked at.

--------
Regards
Ed

edadams - Nov 23, 2005 - 4:26 pm

Bill

My next advice would be to backup and re-install OSX.

If that does not help then it should go to an Apple service centre to get the logic board looked at.

--------
Regards
Ed

bhudson33 - Nov 28, 2005 - 8:24 pm

I think I have narrowed the problem down to a short in the system
when the case is on the laptop. When I say it won't boot, I mean
no gong, nothing...I hear power go to the hard drive, but
nothing else. It just sits there. I booted several times with the
bottom case off and the computer on its edges. It seemed
to act much better. While I had it booted, I ran tech tools tests
on it. Everything passed.

So my question is, do I just need a new top and bottom case?
The top case has a crack in the top left corner near the audio
jack and screen hinge. That corner is pretty loose and seems
problematic. If the processor, ram, drive, video ram, etc all
report good, can I just move everything to a new case and
the problems go away?

Any ideas are welcome...

Cheers,
Bill.

TechSupport - Dec 2, 2005 - 11:44 pm

This ticket has been moved to the open forums for more exposure.

Please follow this link:

http://www.macosx.com/forums/showthread.php?t=263933