Dennis S Dewey , AZ June 20, 2022 Appliance: Kenmore Microwave Venthood Combination 72180603500 Kenmore Microwave 72180603500: Unit was completely dead no power at all. How to replace Time Delay Fuse. After testing power cord, then fuse, capacitor and diode I found the thermostat had no continuity. Replaced thermostat and it works fine. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes