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Microwave Light Bulb Not Working

The 4 most common part(s) or condition(s) which cause the symptom Microwave light bulb not working are listed below starting with the most likely. Check or test each item and watch any available videos.


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To see parts for your microwave, you need to enter your model number on the right. The system will then display parts that are associated with your microwave.

Light Bulb

If the microwave light bulb is not working it is usually located behind the upper grille and behind an access panel, and above the lower panel. On counter top units you will need to remove the outer cover to get to the bulb. If that doesn't solve the problem check the on-off switch, and control board

Enter your model number for the best repair help results:


What is a model number, and where do I find it?

To see parts for your microwave, you need to enter your model number on the right. The system will then display parts that are associated with your microwave.

Main Control Board

If the microwave light bulb is not working check the light bulbs, sockets and wiring. If they are good the main control board might be defective and not sending the correct voltage to the light bulb socket. This could be checked with a multi meter and the wiring diagram with the microwave.

Enter your model number for the best repair help results:


What is a model number, and where do I find it?

To see parts for your microwave, you need to enter your model number on the right. The system will then display parts that are associated with your microwave.

Light Bulb Socket

If the microwave light bulb is not working and a new light bulb doesn't solve the problem, the light bulb socket might be burned out and need to be replaced.

Enter your model number for the best repair help results:


What is a model number, and where do I find it?

To see parts for your microwave, you need to enter your model number on the right. The system will then display parts that are associated with your microwave.

Light Socket

If the microwave light bulb is not working and a new light bulb doesn't solve the problem, the light bulb socket might be burned out and need to be replaced.

Enter your model number for the best repair help results:


What is a model number, and where do I find it?

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