My Bose system on my Hunter 38 2005 loses power after a half hour or so. This is the second time this has happened. The first time I sent it to the Bose factory for repair $150.00. I've heard it's fuse problem, not sure if it's in the base module or radio. It's powered by a 600 inverter and it has happened while just getting power from DC only and while plugged into 30 amp. Any thoughts?