There are two fuses INSIDE the microwave. Whenever I close the microwave door, one of the two fuses blows immediately. The fuses are properly sized (20A/240V) and are slow blow fuses. I suspect that one of the high-voltage components is defective and creates a short in the circuit. Which component is most likely defective and how can I test/eliminate some of the components so I don’t have to buy all and just replace one after the other?
Hello, Replace all the door switches in the unit.