my S3 died.. duno what happen., just died. one time i FB'ing, email and whatsapp, leave it on desk then check it later after 10 minutes, just died.

start button, nothing happen. reset (start button + vol up + menu button), nothing happen also. plugin charger, nothing happen also, even the green charging led not appear. no response to USB jig.
my S3......just...... DIED

help.. what to do? it never drop, no water whatsoever. unroot, stock rom stock everything. the only thing i did recently is JellyBean OTA update about 3,4 days ago and normal apps update.

tried.nothing happen..
anything else i can try before i send for warranty?