The part(s) or condition(s) listed below for the symptom Microwave display not working are ordered from most likely to least likely to occur. Check or test each item, starting with the items at the top of the page.
Control Module
If the microwave does not have a separate display board, then the display not working is likely caused by a defective touchpad and control panel.
If the display goes out partially, the display board is more commonly at fault. If the display isn’t working at all, either the main control board or the display board could be at fault.
If the display isn’t working at all, either the main control board or the display board could be at fault. If the display goes out partially, the display board is more commonly at fault.
Confirm the microwave is plugged in and there is power at the wall receptacle. You can plug another small appliance into the receptacle to confirm there is power. If there is no power, confirm the circuit breaker has not tripped.
If the microwave does not have a separate display board, then the display not working is likely caused by a defective control panel.