James R North Las Vegas , NV October 11, 2016 Appliance: KitchenAid Microwave Hood Combo KHHC2090SSS0 Kitchenaid Microwave Khhc2090sss0: Door switch needed replacing. How to replace Door Interlock Assembly (Microwave). I REPLACED ALL THREE SWITCHES 12 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours