Our 2007 Coachman Clipper has 220-volt shore power. It was set up in a campground this weekend and we went on an outing for a 2-3 hours. Came back and the shore power wasn't working. 12-V appeared to be fine. Checked all the circuit breakers -- both in the popup and the campground box. I even put the 110-volt converter on and tried the 110-volt shore power. Nothing. We know the 110-outlet on the campground box was working because when had stuff plugged into it directly. Now what?