I diagnosed an issue with a KitchenAid refrigerator's icemaker, which was not producing ice. First, I inspected the water supply line to ensure it was properly connected and free of blockages. Next, I checked the icemaker's electrical connections and wiring for any signs of damage or wear. After confirming these components were in good condition, I replaced the faulty icemaker with a new one. I then tested the new icemaker to ensure it was functioning correctly and producing ice. Finally, I cleaned the surrounding area and provided the customer with instructions on how to maintain the new icemaker for optimal performance.