Has anyone had a Hartke 3500 Fuse Problem? I've had an issue where my model had blown a fuse recently. The fuse blew while I was playing, and I had a some replacement fuses specifically in the size that blew. I replaced them, and immediately after turning on the amp, the replaced fuses blew out as well. I blew two fuses just by turning on my amp. Does anyone know what might potentially be the problem before I spend an arm and leg trying to take it to a professional?