to find out if the amp is blown? it was playing perfectly fine till 2 days ago but time to time it wouldnt turn on. i always thought it was due to a bad fuse cuz b4 when the amp wasnt turning on, i would mess around with the fuse n the amp would come on. so this time, i thought the fuse completly blew out but when i bought the new fuse n put it in there, it still doesnt light up.....