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Maytag Microwave light bulb not working

When your Maytag microwave light bulb is not working, the bulb itself is the most likely cause. Replace the microwave light bulb first, and use the correct part for your model. If your Maytag microwave uses a halogen lamp, test it with a multimeter for continuity or install it in an identical socket. Next, inspect the light socket and wiring, then test the main control board to confirm it sends the proper voltage to the light socket. A defective door switch or micro switch can also prevent the light from turning on because it cannot signal the control board when the door opens or closes. Test each switch for continuity and replace any switch that fails. A control board may be responsible, but it is less common after the bulb, lamp, socket, wiring, and switches check out. Enter your model number to find the exact Maytag microwave light bulb replacement, halogen lamp, door switch, micro switch, or control board for your appliance. Replacing a bulb may be straightforward, but opening the outer cabinet requires caution because the high-voltage capacitor can store a lethal charge even when unplugged. Properly discharge it before interior work, or hire a qualified technician if you are not familiar with capacitor discharge procedures.

01 - Maytag Microwave Halogen Lamp

To determine if a halogen lamp has failed, you can use a multimeter to test it for electrical continuity, or install the lamp into an identical socket to test it.
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Top Solution

02 - Maytag Microwave Light Bulb

The light bulb itself might be burned out. Replace the light bulb before replacing any of the parts associated with the light bulb
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Top Solution

03 - Maytag Microwave Main Control Board

Before replacing the control, check the light bulbs, sockets, and wiring. If these parts seem to be working properly, test the control board with a multimeter to determine if it sending the correct voltage to the light bulb socket. If the control board is not sending enough voltage to the light bulb socket, replace the control board.
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Highly Likely

04 - Maytag Microwave Door Switch

A defective door switch may not signal the control board that the door is open or closed which may prevent the microwave light from turning on or prevent the button that controls the light from functioning. To determine if any of the door switches are defective, use a multimeter to test each of the switches for continuity. If any of the door switches do not have continuity, the switch or switches should be replaced.
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Highly Likely

05 - Maytag Microwave Micro Switch

A defective micro switch may not signal the control board that the door is open or closed which may prevent the microwave light from turning on or prevent the button that controls the light from functioning. To determine if any of the micro switches are defective, use a multimeter to test each of the switches for continuity. If any of the micro switches do not have continuity, the switch or switches should be replaced.
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Common

06 - Maytag Microwave Control Board

A microwave light bulb not working could be caused by a defective control board, although this is rarely the case. Before replacing the control board, check the light bulbs, sockets, and wiring. If these parts seem to be working properly, test the control board with a multimeter to determine if it sending the correct voltage to the light bulb socket. If the control board is not sending enough voltage to the light bulb socket, replace the control board.
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Common

07 - Maytag Microwave Power Supply Board

A microwave light bulb not working could be caused by a defective power supply board, although this is rarely the case. Before replacing the board, check the light bulbs, sockets, and wiring. If these parts seem to be working properly, test the power supply board with a multimeter to determine if it sending the correct voltage to the light bulb socket. If the board is not sending enough voltage to the light bulb socket, replace the board.
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Less Common

Frequently Asked Questions

Why is my Maytag microwave light bulb not working?
How do I test a Maytag microwave light bulb and socket?
Can a Maytag microwave door switch cause the light bulb not to work?
Should I replace the Maytag microwave control board if the light is out?
How do I find the correct Maytag microwave light bulb replacement?