I have a Tram Titan4 I bought from a garage sale. When I turn it on, the lights work but nothing else, no reception of any channel, the modulation light doesn't come on when the mic is pressed etc. I explored the board and found a burned out fuse on the Buss 4409 block. It was a 2 agc which I relaced and it blew upon turn on. I found this was the incorrect fuse for the block, put in a 3agc and it didn't blow but still same results. Any ideas what may be the problem? Thanks