In case you’re sure the microwave is plugged in and the door is closed properly, the culprit is likely the fuse. If the Microwave Oven electrical current got too strong or you slammed the microwave door, a fuse may have blown. You may also have a faulty door switch if replacing the fuse doesn’t work.

If you put foil or utensils in the microwave also called “arcing,” sparks can occur if food splatters ignite, if a high-voltage diode shorts. In that case you need to get microwave repair from the experts who care.

In case if your turntable isn’t rotating, the carousel may need to be re-aligned on the turning mechanism. This type of issue may also be caused by a worn-out or split turntable drive bushing.

• In case if your microwave is turning on but not heating your food, and you hear a loud buzzing noise, you could have a defective magnetron, capacitor, or diode. The best way is that you have these replaced or repaired by professional microwave repair technicians.

One more thing that is to be noticed is that your microwave’s touch pad may be damaged from water or insect infestation, preventing you from properly selecting settings for your food. It means you will need to either replace or repair the touchpad to ensure proper function.