Ralph R Lakewood , CO August 28, 2015 Appliance: Model 721.80042700 Kenmore microwave door was comming undone around the edges Ordered a new door from Appliance Pros at a cheaper rate than Sears. Looked at schematic and watched a few YouTube videos on Microwave door repair. Removed the old door and installed the new one. Read More... Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes Tools: Screwdrivers