A microwave is one of the most convenient appliances in the kitchen—until something stops working. If the light bulb in your LG over-the-range microwave has burned out, it can make cooking and monitoring food more difficult. Fortunately, replacing it is a simple task. Whether you’re replacing the cooktop light or the internal bulb, follow these steps to safely install a new one.
What You’ll Need
- Phillips screwdriver
- Replacement light bulb (Model: 6912W1Z004B—confirm compatibility with your microwave before purchasing)
Common Issues After Replacing the Bulb
Sometimes, even after installing a new bulb, the light might not work as expected. Troubleshooting can help identify and fix the issue.
- Check if the new bulb is properly secured in the socket.
- Inspect the socket for corrosion or damage that might prevent contact.
- Make sure the power supply is functioning by testing another appliance in the same outlet.
- Look for loose or damaged wiring inside the microwave if the light still doesn’t work.
- Try a different replacement bulb in case the first one is defective.
- Check if the light control settings on the microwave panel are correctly configured.
- If the problem persists, consider consulting a technician for further diagnosis.
Safety Precautions
Microwaves contain high-voltage components that can store electricity even when unplugged. To avoid the risk of injury or electrocution, keep these safety measures in mind:
- Unplug the microwave before beginning any repairs.
- Never operate the microwave with its casing open or while internal parts are exposed.
- Do not bypass safety features—they are in place to protect you.
- Allow the microwave to cool down if it has been in use before starting the repair.
- Work carefully and patiently—rushing increases the risk of injury or damage.
- Use proper lighting in your workspace for better visibility.
- Keep the area free of clutter and make sure children and pets stay away.
- Refer to the user manual for model-specific installation guidelines.
- Handle parts with care to prevent damage to the appliance.
- Wear insulated gloves to protect your hands from sharp edges and debris.
- Avoid touching exposed wires or terminals. If necessary, use a non-conductive tool or wear insulating gloves to reduce the risk of electric shock.
How to Replace Light Bulbs in an LG Over-the-Range Microwave
Follow these steps to safely replace the upper and lower light bulbs in your LG over-the-range microwave.
Replacing the Upper Light Bulb
- Unplug the microwave from the power outlet.
- Remove the microwave from its mount and place it on a countertop.
- Locate the two screws holding the vent assembly.
- Use a Phillips screwdriver to remove both screws.
- Pull down and lift off the vent assembly.
- Find the plate covering the light bulb behind the vent assembly.
- Remove the single screw securing the plate with a Phillips screwdriver.
- Lift and turn the plate to expose the bulb socket.
- Turn the old light bulb counterclockwise to unscrew it.
- Insert the new bulb and turn it clockwise until snug.
- Put the light bulb plate back in its original position.
- Tuck away any wires.
- Tighten the screw to secure the plate.
- Align the vent assembly’s tabs with the cutouts on the microwave frame.
- Push the vent assembly back into place until it snaps securely.
- Tighten the two screws to hold the vent assembly in place.
If only replacing the upper bulb, stop here. If replacing the lower bulb, continue.
Replacing the Lower Light Bulb
- Carefully lay the microwave on its back.
- Locate the light lens cover on the bottom of the microwave.
- Use a Phillips screwdriver to remove the single screw securing the cover.
- Pull off or open the light lens cover. (Some models have a hinged cover.)
- Turn the old bulb counterclockwise to remove it.
- Insert the new bulb and turn it clockwise until snug.
- Align the cover’s tab with the slot on the microwave.
- Snap or swing the cover back into place.
- Tighten the screw to secure the cover.
Testing the New Bulbs
- Plug the microwave back into the power source.
- Open the microwave door and check if the upper light bulb is working.
- Press the surface lamp button to check if the lower bulb turns on.
- Run a short test cycle with a small bowl of water or food inside.
Read More: How to Change a Microwave Light Bulb
Key Takeaways
You made it! Fixing the light in your LG over-the-range microwave wasn’t as complicated as it seemed, and now you can get back to cooking without working in the dark.
If the new bulb still isn’t turning on, don’t ignore the problem. It could be something beyond a simple replacement, like a wiring issue or a faulty socket. Checking the basics is a good start, but if nothing works, getting professional help is a smart move.
For now, enjoy your well-lit kitchen and the fact that you handled this repair on your own. It’s always a good feeling to tackle a home fix without outside help.