The relay switch may also be known as the door micro switch and is a part for your microwave. The function of this part is to monitor the door latch and communicate whether the door latch is open or c...
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I first removed the top plate above the microwave door (3 screws), then I removed the plate containing the buttons and clock. The microwave has 3 relay switches and they are in a little holder. The holder was too difficult to remove so I just removed the bottom switch and replaced. The microwave started right up.
Part arrived in one day. Old part snapped right out and new snapped right in. One minute repair with no more sparking and no need to invest in a new microwave... which is what I thought I was going to have to do.