Check the controls and symptoms

A microwave with an unresponsive keypad is different from one that runs without heating. Record the exact model, whether the display operates and whether the door closes normally. These observations help you find the correct operating instructions.

Never open the appliance cover

Microwave ovens contain high-voltage components that can remain dangerous even when unplugged. Do not remove panels, test internal parts or tamper with door interlocks. Limit checks to user controls, cleaning and other procedures clearly allowed by the manufacturer.

A damaged door, sparks or burning smell is a reason to stop using the oven and arrange professional service.

Safety matters more than a quick reset

Even an unplugged microwave may contain components capable of delivering a dangerous shock. If the appliance makes unusual arcing sounds, shows visible damage around the door or emits a burning smell, discontinue use. Do not test the high-voltage circuit or attempt to bypass a door interlock. Manufacturer support is the appropriate route for anything beyond normal user cleaning and controls.