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Whirlpool Microwave Light Bulb Not Working

WMH1162XVS2

The part(s) or condition(s) listed below for the symptom Microwave light bulb not working are ordered from most likely to least likely to occur. Check or test each item, starting with the items at the top of the page.

Most Frequent Causes for Microwave light bulb not working

Cause 1Light Bulb

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

Parts
Light Bulb for your WhirlpoolMicrowave
Light Bulb - Part # 1178018 Mfg Part # 8206443

40 Watt microwave light bulb.

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Cause 2Light Bulb

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

Parts
Light Bulb for your WhirlpoolMicrowave
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Cause 3Light Bulb

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

Parts
Light Bulb for your WhirlpoolMicrowave
Light Bulb - Part # 1890433 Mfg Part # 8206232A

Microwave light bulb, 40 Watt. Comes with small screw in base. If the light bulb threads are corroded, the socket may also need to be replaced.

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Cause 4Main 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.

Parts
Main Control Board for your WhirlpoolMicrowave
Main Control Board - Part # 4442507 Mfg Part # WPW10211457
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Cause 5Light Socket

Before replacing the light socket, replace the light bulb. If you replace the light bulb, and the light still doesn’t work, use a multimeter to test the light socket for continuity. If the light socket does not have continuity, replace it.

Parts
Light Socket for your WhirlpoolMicrowave
Light Socket - Part # 1472199 Mfg Part # W10210871
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Cause 6Light Socket

Before replacing the light socket, replace the light bulb. If you replace the light bulb, and the light still doesn’t work, use a multimeter to test the light socket for continuity. If the light socket does not have continuity, replace it.

Parts
Light Socket for your WhirlpoolMicrowave
Light Socket - Part # 4442490 Mfg Part # WPW10210878
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