I've had this system for the last 5 years. Never a problem. Now, somewhat, suddenly, watching TV, or a disc, the volume automatically drops low for seconds, and then the center speaker re-awakens. Strange and irritating. Can't figure out why. Speaker connections haven't moved or changed. Connections to center box are solid and the same. Can wiring somehow degrade? I don't think so. Any ideas or suggestions? Thanks.
