A microwave light not working might seem like a minor inconvenience, but it can be frustrating when you’re trying to check on your food. A non-functional microwave light can result from a simple issue like a burnt-out bulb or a more complex problem such as a faulty circuit board. Understanding the common causes can help you decide whether you can fix it yourself or if it’s time to call a professional.
4 Parts To Check When A Microwave Light Not Working
Here’s a detailed guide on how to diagnose and repair the issue when your microwave light is not working.
1. Check the Light Bulb
The most common reason for a microwave light not working is a burnt-out bulb. Microwave light bulbs can burn out over time, especially if they are not LED bulbs, which tend to have a longer lifespan. This issue is usually the easiest to diagnose and fix.
To replace the bulb, start by unplugging your microwave to avoid any risk of electric shock. Then, remove the cover plate that shields the bulb, which is usually secured with screws. Carefully unscrew the old bulb and replace it with a new one that matches the specifications in your microwave’s manual. After replacing the bulb, reassemble the microwave and plug it back in. If the light still doesn’t work after replacing the bulb, the issue likely lies elsewhere in the appliance.
2. Inspect the Light Socket
If the new bulb doesn’t solve the issue, the next component to inspect is the light socket. A faulty socket can prevent the bulb from receiving electricity, leading to the microwave light not working.
To test the socket, you’ll need a multimeter. After unplugging the microwave, remove the bulb and use the multimeter to check if the socket is supplying power. If the multimeter shows no current, the socket may need to be replaced. Replacing a light socket can be more complicated than changing a bulb, as it involves disconnecting and reconnecting the microwave’s wiring. If you’re not comfortable with this type of repair, it might be best to consult a professional.
3. Evaluate the Door Latch System
Another potential cause for your microwave light not working is an issue with the door latch system. The light is designed to turn on when the door is open or when the microwave is in use. If the door latch or one of the switches inside the microwave is malfunctioning, the light may not turn on as it should.
The door latch system includes several switches responsible for turning the light on and off. To diagnose a problem with the door latch, you can test each switch with a multimeter. Be sure to test the switches in both the “on” and “off” positions to get an accurate reading. If one of the switches is stuck or not functioning properly, it could be preventing the light from turning on. Additionally, if the latch itself is damaged or misaligned, it may not make proper contact with the switches, resulting in the microwave light not working.
4. Consider the Circuit Board
In rare cases, a faulty circuit board could be the reason your microwave light is not working. The circuit board controls many functions within the microwave, including the light. When the circuit board malfunctions, it can cause a variety of issues beyond just a non-functioning light.
A faulty circuit board might include unresponsive buttons, a flickering display, or intermittent operation of the microwave itself. Replacing a circuit board is a more involved repair that usually requires professional expertise. While it’s possible to test the circuit board with a multimeter, the complexity of this component means that it’s often best left to a professional technician.
When to Call a Professional
If you’ve gone through these troubleshooting steps and your microwave light is still not working, it might be time to call in a professional. Issues like a faulty circuit board or damaged wiring are best handled by someone with the right experience and tools. Attempting to repair these components yourself could lead to further damage or even pose safety risks.
At Vancouver Appliance Service Pros, we specialize in diagnosing and repairing all types of microwave issues, including microwave light not working problems. Our team of experienced technicians can quickly identify the problem and offer an effective solution to get your microwave back to full functionality. Don’t let a simple issue like a light bulb keep you in the dark—contact us today to schedule a repair and restore your microwave to perfect working order. View the full video blog here.