They can be a royal pain. I finally took mine out and bought some great ice trays. I kept the dispenser so still have the ice from the door.
The bail wire must be down of course. Using a turkey baster I had to "prime" mine a few times.
If your ice maker has a square plastic face, pop it off and turn the gear. The metal bail wire should go through a cycle and then you can't turn the wheel any longer.
In the back of the refer you probably have two AC plugs. Often each socket is supplied by different breakers. Make sure you have power on both.