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Old Jan 23, 2008, 08:29 AM   #1
scator87m
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Powerbook G4 15" - Sleep and Shutdown Problems

Ok so here it goes...


I have a Powerbook G4 15" which I've had since they were first released. The only thing I've changed was updating the Ram to 1 gig, and am still running OS X.

As of about six months ago my Powerbook would randomly put itself into sleep mode, weather it be while I was working or while I was away from the computer. Sometimes I coulkd wake it up, but lately it will not awake from hibernation and I have to remove the battery and wait for it to shut off before I can restart it.

I have tried some simple fixes, inlcuding changing every sleep and hibernation option, re-installing OS X, and even running the Powerbook in safe mode for a while. Sometimes the probem won't occur for weeks, then it will occur everyday for days in a row.

I have no idea whats going on, any ideas?

Thanks
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Old Jan 23, 2008, 08:13 PM   #2
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Ok I'll have ever reset the Pram or the PMU. Here are the instructions.
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Old Jan 24, 2008, 08:14 AM   #3
scator87m
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Thanks for the guide.

I'll try it tonight and hopefully it'll work, sounds like it should.
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Old Jan 24, 2008, 08:17 AM   #4
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Quote:
Originally Posted by scator87m View Post
Thanks for the guide.

I'll try it tonight and hopefully it'll work, sounds like it should.
Post back your out come.
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Old Jul 11, 2008, 11:29 AM   #5
mymacpb
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Hi,
I have the exact same problem. My Powerbook G4 (1,67Ghz), is going to sleep randomly and for no reason. Sometimes I even have trouble waking it again.

I already tried the enerysaver, re-installing OS X, resetting PRAM, NVRAM and PMU. None of these have solved the problem :-(!

Does anybody have any further solutions???????
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Old Jul 11, 2008, 01:03 PM   #6
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It could also be a BAD pmu as well... which is a tough repair to do yourself unless you're pretty comfortable tinkering inside a laptop like a powerbook from what I have gathered.

I thought I had a bad one and looked into it but it turned out to be something else.

The part is like 70-100 bucks or something. Research it on google.
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Old Jul 12, 2008, 07:08 AM   #7
mymacpb
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Hi there,
thanks for your help. I was just given the advice to check my heat sensors and discpvered that its registereing 206C on the trackpad temperature :-((((!
Is there anyway to disable this sensor? or any other way to avoid an expensive repair by apple itself?
thanks.
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