Phillip S Cozad , NE November 06, 2016 Microwaves time would run but not turn on to cook Simple conductivity test on the door switchs. Replaced bottom one. However they don't come out with out breaking the holddown tabs, too brittle. So I used a self tapping screw to hold in place. Plugged it in and made some popcorn, works great again. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes