Was going to start up for the fall when I noticed no power. I checked the fuse and it was blown. I purchased and replaced the fuse and the second I plugged in, it blew again. I disconnected the igniter and checked each motor individually and they all worked fine when connected to a different power source. Connections all look pristine and no wires frayed or bad. I am thinking the controller board, but wanted to post before I purchased. Any advise?