If your KitchenAid microwave turntable is not turning, the turntable motor is the most likely cause. Unplug the microwave, remove the glass tray, and use a multimeter to test the motor for continuity. Replace the motor if it fails the test. If the motor is good, inspect the glass tray drive coupling and glass tray support for damage, stripped teeth, or cracks, then gently pull each part from the drive motor shaft for inspection. A turntable option may also be turned off on some KitchenAid models, so confirm the setting is enabled. If the motor does not receive power during operation, the user control and display board or main control board could be defective, although either board is less likely than the motor. A microwave turntable not turning can cause uneven heating and hot spots, even when the microwave is otherwise working. Enter your model number to find the exact replacement turntable motor, coupling, support, or control board for your specific microwave. If diagnosing the motor requires removing the outer cabinet, use caution: the high-voltage capacitor can store a lethal charge after the microwave is unplugged. Proper capacitor discharge is required before interior work, and a qualified technician should handle this repair if you are not familiar with the procedure.
01 - KitchenAid Microwave Turntable Motor
Use a multimeter to test the motor for continuity. If the turntable motor does not have continuity, replace it.
Enter model number to search for the required part specific to your product
If the microwave turntable is not turning the glass tray drive coupling could be broken or stripped out. Gently pull the coupling off the drive motor shaft to inspect the drive coupling for damage.
If the microwave turntable is not turning the glass tray support could be broken or stripped out. Gently pull the support off the drive motor shaft to inspect the tray support for damage.
04 - KitchenAid Microwave User Control and Display Board
The user control and display board might be defective. However, the turntable motor is much more likely to be at fault. First, test the incoming power to the turntable motor. If the motor is not getting power, the user control and display board may be defective. If the user control and display board is defective, replace it.
When the microwave turntable turns, the food is cooked evenly. If the turntable stops turning there may be hot spots where the microwaves are concentrated in one area. If the turntable is not turning, confirm the turntable option is turned on (if applicable).
Common
06 - KitchenAid Microwave Control Board
The control might be defective. However, the turntable motor is much more likely to be at fault. First, check the incoming power to the turntable motor. If the turntable motor is not getting power, the main control board may be at fault.
07 - KitchenAid Microwave Touchpad and Control Panel
The touchpad and control panel might be defective. However, the turntable motor is much more likely to be at fault. First, test the turntable motor. If the motor is not defective, it is possible that the touchpad and control panel are defective. To determine if the touchpad and control panel are defective, try pressing each of the buttons on the control panel. If some of the buttons respond correctly while others don’t, replace the touchpad and control panel.