Join the club. Mine back with Sammy at the moment - same thing.
http://forum.xda-developers.com/showthread.php?p=34141825#post34141825
Balls, looks like this could be a major problem for the s3, a ticking time bomb?
Im back on my old Galaxy S.
Did either of you have any prior warning beforehand? Because mine went completely dead for about 5 minutes and then came back to life, I'm wondering if this is the beginning of the end or a lucky escape...