It may not be the fuse--many, including mine, had water infiltration because of where the power enters the motor. Rusts up (which can be cleaned up) and the springs for the brushes stop working. Some have replaced them with springs from old ball point pens. Took mine apart but can't get to the springs--will have to go to a small motor repair place. Still a lot cheaper than $300 for a new motor from Lippert.