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Emerson Microwave not working

Is your Emerson microwave not working? Stopped working, or has power but won't turn on, start with the line fuse, the most common cause. A blown line fuse usually means excessive current reached the circuitry, so test the fuse for continuity and identify the underlying problem before replacing it, or the new fuse may blow again. Next, inspect the switch holder behind the control panel. If it is damaged or misaligned, the door switches may not engage when the door closes. A defective main control board can also stop the microwave, but it is less common and should be considered only after testing the other parts. An open thermostat, failed thermal fuse, or incoming power problem can produce the same microwave not working symptom. Test the outlet with another device, then check the thermostat and thermal fuse for continuity. Enter your Emerson microwave model number to find the exact replacement part for your model. Any repair that requires opening the outer cabinet, including replacing a line fuse, thermal fuse, switch holder, or control board, involves 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 - Emerson 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 - Emerson 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 - Emerson 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 - Emerson 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 - Emerson 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 Emerson microwave not working but has power?
How do I test or replace an Emerson microwave fuse?
Why does my Emerson microwave have power but not start when I close the door?
Can a thermostat or thermal fuse stop my Emerson microwave from working?
How do I identify the correct Emerson microwave replacement part?

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