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Frigidaire Microwave Not Working


The 3 most common part(s) or condition(s) which contribute to the symptom Microwave not working are listed below. Check or test each item and watch any available videos. If you are still unable to solve the problem you may need to do additional research and troubleshooting. Remember, with our 365 Days. Period.® return policy you can return any part for any reason. So, go ahead and buy it to try it. No other parts retailer offers this unconditional return policy.

For the symptom you selected, these are the most common parts or causes, ordered by the likelihood of fixing the symptom.

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Line Fuse - Part # 639406 Mfg Part # 5304408939

Line Fuse

RepairClinic Item # 639406

Every microwave oven has a line fuse. This fuse is designed to blow if too much current is drawn through the microwave circuitry. The fuse can be replaced, but the underlying issue should still be investigated and resolved. Otherwise the new fuse will blow also.

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Main Control Board - Part # 639318 Mfg Part # 5304408501

Main Control Board

RepairClinic Item # 639318

If the microwave is not working the main control board may be defective. This is not common. When a microwave stops working the problem is usually the line fuse or within the high voltage circuit; either the high voltage capacitor, diode, transformer or magnetron.


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Thermoprotector - Part # 639407 Mfg Part # 5304408940


RepairClinic Item # 639407

If the microwave is not working the thermoprotector may have tripped. This is a safety device to prevent the microwave from overheating. It can be tested for continuity to see if it's blown.

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