I was using our microwave the other day and it started arcing with a definite burning electrical smell. The sound was quite loud. Called our appliance store and asked to schedule a service visit. In the mean time a quick google search showed there are issues with some of the microwave drawers. Ours dates back to 2017 and is covered. They are offering a replacement unit, or $250 cash or $500 credit for future purchase. The cash options will not be available till after January 2021.
I got my paperwork in order and filed a claim this morning. Claim approved and a new microwave is on the way in 3-5 days.
https://sharpmicrowavelitigation.com/Notice-and-Claim-Form/PageControl/ErrorMessage