About a week ago my ice maker quit making ice. I have water dispensing out the door, so I have to assume its not a water supply issue. I noticed while checking it the past few days that the arm that rotates to dispense the ice appears to be working (like it is trying to work), as it was in a different position several times when I looked at it. Any suggestions would be great. The troubleshooting guide in my user manual isn't very helpful.

Also, the LED on the on/off switch is not lit up, no matter what I do....not sure if its supposed to be or not, nothing about it in my manual. Thanks