Margo D Tarpley , TX March 17, 2019 Appliance: Whirlpool 27" Built-In Electric Combo Sensor/Sc (Gold Line) GMC275PDS07 Microwave stated ‘door open’ and would not work. I read up on others with this problem of microwave-wall oven combination Whirlpool Gold. We live in a very rural area and were not able to get ANYONE to service it - had 2 companies come out to inspect but they never returned. I have wonderful news! We replaced the fuse, bus fuse, and light bulb (quit working 2 years ago) and all is working. Thanks for the information and for the part diagram. Couldn't have done it without you. Read More... 2 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes Tools: Screwdrivers