GE Fridge not making ice after repair

The auger motor in my ice maker broke. The ice maker worked fine, just the auger shaft broke so it would not dispense the cubes. I had an extended warranty and the GE repair guy replaced the part a few days ago. Now it’s not making ice cubes. The water dispenser works fine. The "ice lock" is not on. Some ice makers have a bar or lever so it doesn’t make too much ice. My fridge does not appear to have anything like that. I wonder if the repair guy somehow turned off the water supply to the ice maker while he changed the auger motor. And forgot to turn it back on. Any ideas?