John P Tarpon Springs , FL April 26, 2016 Appliance: LG Microwave Oven LMV1680ST Lg Microwave/Hood Combo Lmv1680st: Various parts of the door assembly had worn out and the door handle could not be re attached. How to replace Door Assembly. I fixed the problem by replacing the door assembly with a new one that I received from ApplianceParts Pros; it was shipped and received within two days. I retrieved a YouTube video that gave step by step instructions on how to replace the door. With my trusty ratchet screwdriver I followed those instructions and it took me about 20 minutes to replace the door. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes