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Modern Maid Microwave not working

Is your Modern Maid microwave not working? First check the line fuse, the most likely cause when the microwave is not turning on or is completely dead. Test the fuse for continuity and replace it only after addressing the electrical problem that caused it to blow. Next, inspect the switch holder behind the control panel. A damaged or misaligned holder may prevent the door switches from actuating, so the microwave may have power but not work when the door closes. A defective main control board can also stop operation, but it is less common and should be considered only after testing the other parts. An open thermostat may cut power after overheating, while an unpowered outlet, tripped breaker, or blown home fuse can make the microwave appear dead. Finally, test the thermal fuse, which must be replaced if it has no continuity. Enter your model number to find the exact replacement part for your Modern Maid microwave. Unplug the microwave before service, and remember that opening the outer cabinet exposes a high-voltage capacitor that can store a lethal charge even after unplugging. Proper capacitor discharge is required before interior work, so use a qualified technician if you are not familiar with the procedure.

01 - Modern Maid 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 - Modern Maid 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 - Modern Maid 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 - Modern Maid 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 - Modern Maid 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

Frequently Asked Questions

Why is my Modern Maid microwave not working but has power?
How do I test a Modern Maid microwave fuse or thermostat?
Could the door switch or switch holder cause my microwave to stop working?
Is the Modern Maid main control board usually the problem when the microwave will not turn on?
How do I find the correct Modern Maid microwave replacement part?

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