If your microwave is not turning on when there is something inside, there could be several possible reasons for this issue. Here are some common causes:
Door Interlock Issue: Microwaves are equipped with safety mechanisms that prevent them from operating when the door is not properly closed or if the door interlock system is malfunctioning. If the door isn't fully closed or if the interlock switches are faulty, the microwave will not start.
Faulty Door Switches: Microwave ovens have multiple door switches that detect whether the door is closed. If any of these switches are faulty or misaligned, the microwave will not activate as a safety measure.
Blown Fuse: A blown fuse inside the microwave can cause it to not turn on. Fuses are safety devices that protect the microwave from electrical overload. If the fuse is blown, it needs to be replaced.
Control Board or Panel Issue: A malfunctioning control board or touchpad panel can prevent the microwave from receiving and processing commands to start.
Defective Magnetron: The magnetron is the component responsible for generating microwaves in the oven. If the magnetron is faulty, the microwave won't be able to heat food, and it may not turn on at all.
Overheating: Microwaves have thermal cut-off switches that shut down the microwave if it overheats. This can happen if the ventilation is blocked or if the microwave is operated with nothing inside.
Power Supply Problem: Check if the microwave is receiving power by ensuring that it is plugged into a functioning power outlet and that the circuit breaker or fuse is not tripped.
Troubleshooting and repairing microwaves can be dangerous due to the high voltages involved. If you're not experienced in handling electrical appliances, it's best to seek professional help. Contact the manufacturer's customer service or a certified technician to diagnose and repair the issue safely. If the microwave is still under warranty, you may also be eligible for free repairs or a replacement.