Andrew Davis, heat=shortcircuit. Right after you found it and tried to find the owner unsuccessfully you should have disassembled the GoPro and cleaned it with some 90% isopropyl alcohol. You most likely now have corrosion damage on the board and the components have shorted out. Disassemble it and see if you find some obvious damage. here are [[Topic:GoPro Hero 3 Silver|the guides]] for it.