Mickey M Dothan , AL February 23, 2020 Appliance: General Electric Microwave Hood Combo JVM3160DF4WW Ge Microwave Jvm3160df4ww: Microwave tripping breaker. How to replace Microwave Door Monitor Switch. After doing some checking with my multi-meter, it was the middle switch on the door that was bad. Replacing it was easy, if you can fix things yourself. You can save a lot. I replaced one of the thermostats also. 3 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes