Hey all ... I just found this thread and I love it ... I have a question, however, that I hope you guys may be able to help me with. * I have a SONY SD-545 AV receiver and it's been working fine, until recently. It seems that the front speakers are blanking out every once and a while. They can be on and them boom ... they go out. THEN, A day later, they're back on. what the fudge? I've tried switching them out and the speakers work just fine in other locations like the rear or side... I turned the receiver around to see if the connections were loose and they weren't. I'm thinking ... It runs awfully hot sometimes. Could it be the heat affecting the unit after all these years??? After all, it's housed in an armoire so could that be it??? Anyone have a similar problem???