Choose Product
Identify Problem
03
Find Solutions
HomeRepair HelpJenn Air Microwave RepairJenn Air Microwave not working Repair

Jenn Air Microwave not working

If your Jenn Air microwave is not working, has stopped working, or is not turning on, start with the line fuse. A blown line fuse usually means too much current passed through the circuitry, so test the fuse for continuity and investigate what caused it to fail before installing a replacement. Next, inspect the switch holder behind the control panel. If it is damaged or misaligned, the door switches may not actuate correctly when the door closes, leaving the microwave dead even when it has power. A defective main control board can also prevent operation, but it is less common and should be considered only after the other parts test good. An open thermostat or thermal fuse can stop power after the microwave overheats, while a failed electrical outlet, tripped breaker, or household fuse can cause a microwave not working symptom. Enter your model number to find the exact replacement line fuse, switch holder, control board, thermostat, or thermal fuse for your Jenn Air microwave. Any repair that requires opening the outer cabinet must be handled carefully because the high-voltage capacitor can store a lethal charge even after unplugging. Proper capacitor discharge is required, and a qualified technician should perform the repair if you are not familiar with the procedure.

01 - Jenn Air Microwave Line Fuse

If too much current passes through the microwave circuitry, the line fuse will blow. If the line fuse blows, the microwave won’t start. To determine if the line fuse is at fault, use a multimeter to test it for continuity. If the fuse does not have continuity, replace it. In addition, you should investigate and resolve the problem that caused the fuse to blow. If you don’t resolve the underlying issue, the new fuse will blow too. (Caution: The microwave oven can store thousands of volts of electricity in its high voltage capacitor, even after the microwave oven has been unplugged. Due to the potential for electric shock, i...t is extremely dangerous to replace the electronic components in a microwave. Only a licensed technician should replace the line fuse.)
Enter model number to search for the required part specific to your product
Need help finding your model number?
Shop all Jenn Air Microwave Line Fuse Parts
Top Solution

02 - Jenn Air Microwave Switch Holder

The microwave switch holder is the component that houses the door switches behind the control panel. If the switch holder is damaged or misaligned, one of more switches may not be actuated when the microwave door is closed, resulting in the microwave not working. You will need to uninstall the control panel and inspect the switch holder to confirm it is in good condition and secured properly. Replace the switch holder with a new one if necessary.
Shop all Jenn Air Microwave Switch Holder Parts
Top Solution

03 - Jenn Air Microwave Main Control Board

The main control board might be defective. However, this is rarely the case. Control boards are often misdiagnosed—check all of the more commonly defective parts. If you have determined that all of the other components are working properly,replace the main control board. (Caution: The microwave oven can store thousands of volts of electricity in its high voltage capacitor, even after the microwave oven has been unplugged. Due to the potential for electric shock, it is extremely dangerous to replace the electronic components in a microwave. Only a licensed technician should replace the main control board.)
Shop all Jenn Air Microwave Main Control Board Parts
Top Solution

04 - Jenn Air Microwave Thermostat

If the microwave overheats, the thermostat trips to cut off voltage to the microwave. If the thermostat is shorted open, it may not allow voltage to reach the high voltage components. To determine if the thermostat is at fault, use a multimeter to test it for electrical continuity. If the thermostat does not have continuity, and it cannot be reset, replace it.
Shop all Jenn Air Microwave Thermostat Parts
Highly Likely

05 - Incoming Power Problem

The electrical outlet may not be getting power. To determine if the outlet is getting power, try plugging something else into the outlet. If the outlet is not getting power, check the home circuit breakers or fuses.
Highly Likely

06 - Jenn Air Microwave Thermal Fuse

The thermal fuse cuts off power to the microwave if the microwave overheats. To determine if the thermal fuse has blown, use a multimeter to test it for continuity. If the fuse does not have continuity, replace it. The thermal fuse cannot be reset—if the fuse is blown, it must be replaced. (Caution: The microwave oven can store thousands of volts of electricity in its high voltage capacitor, even after the microwave oven has been unplugged. Due to the potential for electric shock, it is extremely dangerous to replace the electronic components in a microwave. Only a licensed technician should replace the thermal fuse.)
Shop all Jenn Air Microwave Thermal Fuse Parts
Common

07 - Jenn Air Microwave Control Board

Since the control board controls the voltage being sent to all of the microwave's components, a defective board could be responsible for a microwave not working. However, this is rarely the case. Control boards are often misdiagnosed—check all of the more commonly defective parts. If you have determined that all of the other components are working properly, replace the control board.
Shop all Jenn Air Microwave Control Board Parts
Common

Frequently Asked Questions

Why is my Jenn Air microwave not working but has power?
Where is the microwave fuse, and how do I replace it?
Why is my Jenn Air microwave not turning on when the door is closed?
Could the thermostat or thermal fuse be causing my microwave to stop working?
How do I find the correct Jenn Air microwave replacement part?