Kelly P Castaic , CA March 04, 2016 Appliance: Model 721.80039700 Microwave door was cracked I ordered a replacement door from AppliancePartsPros.com and the install was a snap! You have to get the door in the right position to remove and lift up. I saved about $250 by having to replace the entire microwave! I do repairs for property management companies and use AppliancePartsPros.com all the time. Their "How To" videos are fantastic! Read More... Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes Tools: Screwdrivers