unplugged immediate shutdown syndrome”
It appears that the RSS issue is happening to my MBP duo 2.2 lap top as well !!
My story is . . when i unplug my AC it powers down within 3 seconds . . .
and with out AC power it will chime and immediately power off . . . FAK!
this machine works fine when plugged in . . .
so my problem could be defined as ” unplugged immediate shutdown syndrome”
just if you where wondering, ITS NOT THE BATTERY. i have tried a new battery fully charged and i have the same issue.
As this computer is only 14 months old i am some what perplexed on how to proceed . . .seeing as i dont have an apple care plan, An over sight i know .. BUT,
As far as i can tell from a large number of nightmare stories proved in great detail on this forum and many others it appears apple aint gonna do shit for me even if i had a care plan
so in short
what i can gather from the surfing around all after noon
it looks like the mac books simply run to hot, and over time they slowly cook them selves and create a number of short circuits are often found around the heat sync and power circuitry.
it doesn’t take a physicist to work out what happens to complex circuitry that is exposed to sustained heat . . . .
the most likely reason this syndrome is considered ”random” is because it can effect any part of the complex circuitry in any number of ways.
based on my hypothesis this might explain why are a number of people who keep having issues long after batteries ,mother boards and heat sync are replaced,
so if there is any one keen on a class action suit or better known as a “civil case” in New Zealand and Australia im keen to throw mac book on the bonfire and start a Riot !!!

December 10th, 2008 at 10:24 pm
I am experiencing the EXACT same problem as you. I have an appointment with the “genius bar” on Friday 12/12; however, I am past warranty and worried about how much repairs will cost me. I recently lost my job, and I do not have the funds to cover repairs. Any suggestions for how I can get this issue resolved cost free? My computer is about 20 months old…
Thank you!
January 19th, 2010 at 8:46 pm
Shut off the mac….then turn it on and hold down command option P and R…..Hold it to the mac turns on and chimes 3 times then see if the problem is fixed…i just did this and my mac has yet to shut off in the past 5 min…..so far so good….being that it used to shut down when unplugged every 5 seconds…god luck