The sound on my machine (X-Files) just stopped one day while everything else continued to work. I did discover that the F8 fuse was blown. Replace it, turned machine on, machine made an "earth shaking" loud hum then stopped (fuse blown again after about 4 sec.). Thinking the speakers were the cause, I removed them, tested the wires for a short and disconnected the speaker connections from the board. Restarted the machine while watching F8 fuse. Fuse turned red and blew. The machine does continue to work without sound and with the F8 fuse blown. What next should I do?