Sharp Microwave Not Starting or Not Heating: Door Switch Troubleshooting
A bad door switch is one of the most common failures in Sharp microwaves, and the symptoms often confuse owners because the microwave may still light up, spin, or beep even though it will not heat. Once you understand how the switch system works, the diagnosis becomes straightforward. This guide walks through the exact steps technicians use to identify a failed door switch, the symptoms that point directly to it, and how the repair is normally handled.