It's not the fuse
I got a chance to take a quick look at it late this afternoon. It's not the fuse. Batteries are fine, converter's fine, everything (except the inverter) works on shore power or on generator power. I'll crawl under it tomorrow and try to figure out if the inverter is getting 12V from the batteries.
Retired USAF E8 (Vietnam Vet) & Retired VA & Retired!