I picked up a 5000a today from a craiglist ad, he plugged it in to show mw that some of the lights worked but didn't have any speakers to listen to it, he claimed it worked. I only paid $40 for it. When I got it home this afternoon I opened it up and found 6013 boards in it, other than that it looked ok besides being filthy. I hooked it up only one channel played very low. The left side fuse is blown. I am going to clean it this week and try a new fuze. Any ideas what may be causing the low volume and burnt fuse?