Hopefully just a power issue? Our in dash magnadyne is completely dead. No light! Wiring diagram shows a "constant" and a "switched" 12 volt power. I checked both fuses (one in the front run bay, sec...
Our's has a fuse located right at the coach battery presumably so that when all the battery disconnect switches are off this will still provide a direct link to a 12V source and therefore maintain the memory. I know this because I removed this fuse once and the radio went dumb.