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spontaneous shut down

when using without power cord (battery only) with battery charged - the computer simply turns off - anything unsaved is lost of course, no warning. seems to be when battery is about half or less but also when more demanding video action (MRI viewing). Any thoughts or solutions appreciated.

MacBook Pro 2.16 intel core, Mac OS X (10.4.11)

Posted on Dec 20, 2007 8:04 AM

62 replies

ejeklint

Level 1

14 points

Jan 26, 2008 8:45 AM in response to Bruce Goldberg2

Well, in my case it was the battery. I called Apple, gave all facts and figures. After a while they returned and said that the battery most likely was bad, with only 44 cycles it gave just a little more than 3000 mAh. I got a new one and the problem is gone.

Feb 26, 2008 9:55 AM in response to Bruce Goldberg2

Turns out mine was caused by a damaged thermal sensor wire inside the machine. The ground wire was severed, and my assumption is that the wire would periodically make contact with the laptop case, grounding the circuit and triggering an overheat protection that would shut down the laptop. Repairing the wire seems to have resolved the issue.

spontaneous shut down

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