Hey, I'm the former happy owner of Logitech Z680 speaker system. Recently however, the system has started to malfunction by blowing out fuses. First it was one fuse, which I replaced with a newly shipped Logitech fuse, which then also blew, which I also replaced, which then blew and so on, until now where every new fuse I replace blows the very second I connect my system to the power. I guess the transformer or something is blown?! Does anyone know what might be wrong, or how I can fix this?