Found the repair guide online & tested per instructions, which indicated a bad thermostat and/or motor. Bought motor unit first and installed. Amazing how easy these are to work on yourself compared to the cost of having a tech do it. Motor unit delivered & starting getting ice but VERY slowly. Since replacing the thermostat is a wee bit more complicated, but now experienced, ordered same together with ice tray which was in bad shape (the tray is coated with a plastic which was disintegrating). Changed out both in about 20 minutes, and all works beautifully now...lots of ice!