Just purchased this Minni Winni 22R. Refrigerator works on propane, will not work on AC from shore line or generator, power board AC fuse was blown, replaced. Still did not work. Then replaced main power board still does not work. All other electric units seem to work, except DC charger for coach batteries. I think a 220V shore line was hooked up. I found a 220V male plug to a 110V female plug in the coach. NEED HELP, THANKS