Ordered the 3 door switches, replaced them and microwave is back in business. Not sure which one exactly was failing as they all seem to pass a continuity test now that they've been removed. However, with the new switches the microwave is fully functional with no further door problems. Straightforward but lots of cable connectors to disconnect in order to take the control panel off and pull the plastic piece the door switches attach to. Take photos with your phone prior to pulling the wiring harnesses off to refer to when putting it back together. Each of the switches pivot on a plastic pin so take your time to push the plastic retaining clip out of the way and pivot the switch off.