Customer Questions and Answers for Light Bulb by Whirlpool

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Manufacturer Part

Light Bulb

4.89 (64)

By: Whirlpool

Part Number: OEM17950887

Manufacturer Part Number: W10709921

The Light Bulb is an OEM part for Whirlpool microwaves. It provides illumination within the microwave cavity, enhancing visibility so you can monitor your cooking without opening the door. This feature is essential for convenience and to ensure proper cooking, as it helps to prevent heat loss and maintain the microwave’s energy efficiency.

Symptoms of a bad Light Bulb include:

The microwave interior remaining dark despite the appliance being in use.
Flickering or inconsistent lighting when the microwave is operating.
The bulb not turning on, indicating it may be burnt out or there is a connection issue.

Causes of a bad light bulb can include filament wear out due to prolonged use, damage from moisture or grease exposure inside the microwave, or electrical surges that can shorten the bulb's lifespan.

This OEM part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore models, ensuring it fits a wide range of microwave models.

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Questions & Answers

For Whirlpool Light Bulb (Part Number: OEM17950887)

R St John January 04, 2024 for Model Number MMH78019HZ05

When replacing the cooktop light I can not pull out the halogen bulb , does the bulb socket have to be removed in order to replace the bulb. This is pretty weird! Tank you

1 Answer

R St John, the bulb W10709921 should be able to pull free without removing the socket. However, if there was a loose connection in the socket and the bulb welded to it, the harness W10834331 would need to be replaced.

Darlene November 01, 2023 for Model Number WML55011HB3

How do your remove the light bulb? Where is it located?

1 Answer

Darlene, there will be a T panel at the bottom of the microwave with multiple screws securing it in place. With the screws removed, the panel can be moved down to expose the bulb W10709921 so that it can be removed and replaced.

Connie October 11, 2020 for Model Number KHMS2040BSS

Hunting for replacement bulbs from underside

1 Answer

Connie, The bulb for the underside light is a part number W10709921

Elizabeth H September 06, 2020 for Model Number KHMC1857xspo

Looking for 2 bulbs fo fit this model

1 Answer

Elizabeth, The part number for the bulb is W10709921 and you will need to order 2.

Bob November 22, 2019 for Model Number WMH76719CZ-0

Bulb - part # - ap5983626 - does not specify wattage. I have replaced it twice with a 25-watt halogen and they worked fine for a while then stops working. It does not appear to be a burnout. What am I doing wrong?

1 Answer

Bob, the bulb W10709921 is a 25-watt halogen bulb. When installing this type of bulb, a rubber glove or such is needed as the oils from the hand can leave a residue that can cause the bulb to retain heat and wear out significantly faster. Another thing that can impact these bulbs is how often they are turned on and for how long. If the bulb is left on for a long period of time, this can cause it to wear out quickly as well.

Brian D December 03, 2018 for Model Number KMHP519ESS0

Both Bulb lights on the bottom of the microwave have burned out.. When we bought replacements and installed them, they became unbearably hot almost instantaneously. We're thinking its too high a wattage bulb... I think we purchase a 25w? What do you recommend? Thank you.

1 Answer

Brian, The bulbs for this unit would be part number W10709921.

Brian June 04, 2018 for Model Number Whirlpool WMH76719CS-3

Can I replace the halogen bulb (W10709921) with a LED bulb?

1 Answer

Brian, Unfortunately we do not have any information on being able to change the Halogen bulb to a LED. The halogen works on 120 vac where the LED works on 12vdc and unless it has an adapter that converts the power then it would not work.

Ang September 28, 2017 for Model Number Part No. AP5983626 Mfg Part Number W10709921

Do you have a video on how to install the bulb

1 Answer

Hello Ang, This exact part number has not had a video assigned to it as of yet. If you could please post a new question including the model number from the units' I.D. tag, we can research and see if there are instructions in the service manual. Thank you for your patience and understanding in this matter.

Marylee Holihan May 07, 2017 for Model Number KHMS2040BSS0

Under microwave lights won't go on but it's not the bulbs. What now?

1 Answer

Marylee, If the bulbs are installed correctly, and there's no visible damage to the wires, then the issue would be the WPW10250238 / W10250238 Control Board. One or both of the HL relays are not "closing" and energizing the circuit to illuminate the light bulbs.

Ed January 17, 2017 for Model Number KHMC1857WSS0

Both light bulbs under the microwave have burned out. Which bulbs do I need?

1 Answer

Hello Ed, You will need to order two W10709921 for the surface lights on the model provided.

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