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Magic Chef Microwave light bulb not working

If your Magic Chef microwave light is not working, the light bulb itself is the most likely cause. Replace the microwave light bulb first, then check the halogen lamp if your model uses one. You can test a halogen lamp for continuity with a multimeter or try it in an identical socket. If the bulb and lamp are good, inspect the light socket and wiring, then test the main control board to verify that it sends the correct voltage to the socket. A defective door switch or micro switch can also keep the microwave light from turning on because the switch tells the control board whether the door is open or closed. Test each switch for continuity and replace any switch that fails. A faulty control board is less common, but it may be responsible when the bulb, socket, wiring, and switches check out. Enter your model number to find the exact Magic Chef microwave light bulb, halogen lamp, socket, door switch, micro switch, or control board for your appliance. If diagnosis requires removing the outer cabinet, unplug the microwave first and remember that the high-voltage capacitor can store a lethal charge even after unplugging. Proper capacitor discharge is required before interior work, so hire a qualified technician if you are not familiar with that procedure.

01 - Magic Chef 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

02 - Magic Chef 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

03 - Magic Chef 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 - Magic Chef 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 - Magic Chef 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

06 - Magic Chef 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

07 - Magic Chef 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 Magic Chef microwave light bulb not working?
How do I test a Magic Chef microwave bulb or halogen lamp?
Could a door switch cause my Magic Chef microwave light bulb not to work?
How do I know if the Magic Chef microwave control board is causing the light to stay off?
How do I find the right Magic Chef microwave light bulb replacement?