Just had the same problem earlier this year.
1st when you hit the switch do you hear a click but no motor?
if so that means the first solenoid is working but the motor solenoid is probably bad.
Try jumping across the motor solenoid to see if the motor starts. If so that is your problem. If so for a emergency fix, have someone press the switch while you jump the motor solenoid with a real heavy piece of wire. This will get the slides in. Call Stuarts
stuartsand order a motor solenoid. It's a pretty easy repair just make a note of which wires go where.
Good luck
Dave