Douglas S Yorba Linda , CA November 30, 2016 Appliance: Amana Microwave MVH350SS Lg Microwave Mvh350ss: No i later determined that it was the thermal switch physically mounted on the magnetron. How to replace Microwave Capacitor. Replace the thermal switch after a subsequent new part order from APP. 5 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 2+ hours