How to Replace the Light Bulb in a Microwave Oven

Microwave ovens have light bulbs installed in one or two locations, depending on the microwave's design. Almost all microwaves have a light that illuminates whenever the door is opened or the microwave is in use. Microwaves designed to be installed over a range or cooktop also have a light on the bottom of the unit, which is designed to illuminate the surface below. Eventually, the light bulb in your microwave will burn out and must be replaced.

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Microwave ovens placed above ranges often have a light bulb installed on the bottom of the unit.

Surface Light Replacement

Step 1

Unplug the microwave. Often, the microwave will be plugged into an outlet installed in a cabinet above the microwave.

Step 2

Remove the screw from the side of the light cover, located on the bottom of the microwave, then lower the light cover. Often, the light cover will be connected with a hinge and will not separate from the microwave.

Step 3

Depending on the model, you will have to unscrew or pull out the light bulb.

Step 4

Thread a new light bulb into the light socket, or if installing a halogen bulb, push the bulb into the socket. If installing a halogen bulb, wear gloves before handling the light bulb because the oils from your fingers can damage the bulb.

Step 5

Replace the light cover and secure it with the screw.

Oven Light Replacement

Step 1

Unplug the microwave.

Step 2

Remove the two screws on the grill above the microwave door and remove the grill.

Step 3

Find the light fixture inside the upper cavity of the microwave.

Step 4

Remove the light cover with a screwdriver, if necessary.

Step 5

Unscrew the light bulb to remove it.

Step 6

Install a new light bulb by threading it into the light socket.

Step 7

Replace the light cover, then replace the grill and secure it using the two screws.