MBP randomly turns off while plugged in & on battery

my MBP now randomly shuts down, at any time, regardless of the state the computer is in (at least 5 times a day) i often then have trouble actually getting it to boot, as it will shut off 7-10 times before it actually gets to the password area
http://www.macbookrandomshutdown.com/
http://arstechnica.com/journals/apple.ars/2006/7/18/4689
http://theappleblog.com/2006/08/29/random-acts-of-shut-down/
many more can be found on google.
the battery was replaced under the recall.
any ideas??
Thanks,
David

I've had the same problem quite a while but finally found out today something useful. When I installed the iStat Pro widget, I started to wonder why the left fan showed 0 rpm. Then I also realized, that I haven't heard the bit noisy fan in a long time.
The solution was easy. I opened the cover and using pressurized air cleaned all the dust off the fans and made sure the connectors were good. Now my MBP has been running 10 hours without any problems though yesterday only it shut down several times.
So if your warranty is expired, just do the same before letting anyone sell you a new logic board or anything.

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O Sages of Mac Wisdom,
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Hey steck and Welcome to Apple Discussions,
Why would it be turning off on its own when it is plugged in?
Have you been on the machine when this happens? Are there any unusual symptoms when this happens?
Next:
Download Temp Monitor here and run it:
http://www.bresink.de/osx/TemperatureMonitor.html
report back
There could also be a DC in board problem or a PMU problem.
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Charge Information:
Charge remaining (mAh): 1438
Charging: Yes
Full charge capacity (mAh): 1544
That's about a third of what it should be.
The ifixit battery:
Charge remaining (mAh): 5236
Charging: Yes
Full charge capacity (mAh): 5804
That one should run it for 5 hours. It could be bad.
Did you calibrate it when you got it?
http://support.apple.com/kb/HT1490
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Sort of like this:
http://www.lowendmac.com/ed/herlihy/09ph/ibook-netbook.html
Richard
Message was edited by: spudnuty
Message was edited by: spudnuty

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MBP randomly turns off while plugged in & on battery

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