Scott B Hayward , WI January 03, 2015 Appliance: Whirlpool 1.8 Cu Ft Microwave MH3184XPB6 Whirlpool Microwave Mh3184xpb6: Broken door on microwave hanging down difficulty closing. How to replace Complete Door (Black). Bought new door, installed in about 1 minute, everything works great Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes