So when we were letting it down we might have bound it up because something was left on the front. I had to manually jack it back up and let it down. I replaced the 12v breaker. It was working fine until I let it down on the hitch that was sitting on the nose... It didn't touch the motor just cracked the fiberglass(?) in the front a little. Maybe the switch shorted out? I don't know. Any ideas? It will manually pump up and releasing the valuve will make it go down. I have two switchs and a pull chord. The first is a 3 position black switch. Up is trailer power and down is battery power, I guess, and the center is off. The other switch is a 3 way also but it is the one that makes it go up or down. It does nothing when pressed. The pull chord is the lock for when its up.