open the cover on the control box and see if there are green lights on the motor drivers (little black boxes) and on the power supply. should be green or blue.
if no lights, unplug the power cable from the control box and toggle the 120/220v switch on the power supply once or twice then set it on 110v and see if the lights come on.
you should also hear a “hum” from the motors if you’re getting power.