amp trouble

man if its not one thing, its another!!!

i think the reason why my amp is frequently shorting out is because the sob is over heating....its a kenwood 600w brigdable...and it doesnt have a fan or anything like that...ive checked all the connections...i think its just not getting enough air (even goin down the hiway at 70 with the windows open)...

any ideas on what could be causing it to short?...and if so, any ideas to fix it?....cheaply...(just spent $75 on dynamat damnit)