Microwave interior light does not come on when door opens or during cooking, but unit heats normally.

Safety: Unplug the microwave before replacing the lamp. Avoid touching the new bulb glass with bare fingers.

Steps:

• Locate the cavity lamp cover (often behind a grille or panel inside the cavity or on the side/top of the cabinet).
• Remove the cover screws and access the bulb.
• Replace the bulb with the correct type and wattage specified for your Hamilton Beach model.
• Ensure the bulb is seated firmly in the socket and reinstall the cover.

If a new bulb does not light: The lamp socket, wiring, or control board lamp relay may be faulty and require professional diagnosis.