Possibly.

(after checking the fuse)

I would remove the mast if I were you. You should be able to move it up and down easily. If you can move it easily, it probably means that either your circuit board is toast or there is a bad connection somewhere.

Just recently (after replacing mine with a good used one) it quit working again. I feared I had burnt up the circuit board after seeing the fuse was good. Luckily one of the leads to the motor itself had come undone... I resoldered both of them and now it is very reliable.

Keep us up to date.