Yep like that abit of ceramic layer cracked off, dunno how its happened exactly, I hope its the problem, but anywayz I have packed it all up now and gonna put it on *** bay for £15 starting auction, starting at 1p I just cant see it getting far.
if thats the case, then i bets its either overheated, or suffered from an electric spike. it may have just killed that chip, or it could have gone further.. only way is to replace it to see