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HomeRepair HelpFrigidaire Microwave RepairFrigidaire Microwave not working Repair

Frigidaire Microwave not working

If your Frigidaire microwave is not working, first check whether it is completely dead or has power but is not responding. The most likely cause is a blown line fuse, which can prevent the microwave from turning on; test the fuse for continuity and correct the underlying problem before installing a replacement. A damaged or misaligned switch holder can also keep the door switches from actuating, so inspect the holder and door switch assembly behind the control panel. A defective main control board is possible but less common and should be considered only after other parts test good. Next, check the outlet, circuit breaker, or household fuse, followed by the thermostat and thermal fuse, which can open when the microwave overheats. These checks can help with a microwave stopped working, a microwave not turning on, or a microwave that has power but is not working. Enter your model number to find the exact replacement part for your specific Frigidaire microwave. Any repair that requires opening the outer cabinet, including fuse, thermostat, or control board work, 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 unfamiliar with that procedure.

01 - Frigidaire 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.)
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02 - Frigidaire 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.
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03 - Frigidaire 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.)
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04 - Frigidaire 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.
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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 - Frigidaire 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.)
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Common

07 - Frigidaire 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.
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Common

Frequently Asked Questions

Why is my Frigidaire microwave not working but has power?
How do I know if the Frigidaire microwave fuse is blown, and where is the fuse located?
Could a Frigidaire microwave door switch or switch holder keep it from turning on?
Why did my Frigidaire microwave stop working after overheating?
How do I find the correct Frigidaire microwave replacement part?

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