Kathleen L Greenwell Springs , LA January 14, 2021 Monitor door switch. Microwave would trip the breaker when I would press start. So I looked on Google and found on Youtube which indicated it could be a door switch. "IMPORTANT I AM AN ELECTRICAL DESIGNER/ENGINEER THERE IS A CAPACITOR THAT HOLDS ELECTRIC ENERGY EVEN WHEN UNPLUGGED DO NOT DO THIS WORK UNLESS YOU KNOW WHAT YOU ARE DOING TO REMOVE THIS ELECTRIC ENERGY SAFELY" I took apart the microwave and behind the touch panel of the microwave was the wiring sheet. There are (2) switches on the door. I took a meter and check for continuity of the switches with door open and closed. What I saw in youtube was correct, it was the middle switch which is the door monitor. The bracket that these switches mount in seemed to have a broken clip on one of the switches. So I ordered all (3) new switches and the bracket with spare fuse. When parts came in, I replaced everything verified the switches worked correctly with my meter again then did a test before remounting. It worked! $50 buck vs 200+ for a service guy or more to replace microwave. Read More... 4 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours Tools: Pliers, Screwdrivers