When you open the door on your microwave, it sends an electrical current to the halogen lightbulb mounted inside the microwave. The signal turns on the light and illuminates the inside of the microwave. In addition, while cooking your food, the light illuminates so you can monitor the condition of your food while cooking. While the bulb generally lasts a long time, when it burns out, you must service your microwave.
Unplug the microwave from its electrical outlet. Never service an electrical appliance while it's plugged in.
2
Remove the screws that hold the outer shell onto the microwave chassis. Often the screws are on the bottom or back of the microwave. Use a Phillips screwdriver or Torx driver to remove the screws.
3
Lift the outer shell off the microwave chassis and locate the box that houses the halogen lightbulb. In most cases, the box is metal. It may or may not have a lid on it. If it has a lid, loosen the tabs and pull off the lid.
4
Unscrew the halogen bulb and replace it with a bulb rated at the exact same wattage.
5
Place the cover back onto the box if necessary and place the shell over the microwave chassis.
6
Secure the shell to the chassis with the original screws and the screwdriver or torx driver.
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