Microwave displays E17 and the interior light does not come on when the door is opened, though other functions may work.

Safety first: Unplug the microwave before replacing the lamp.

User-level checks (if lamp is user-serviceable):

• Consult the Hoover user manual to see if the lamp can be accessed via a service panel.
• If accessible, remove the cover, unscrew the lamp, and inspect the filament. Replace with the exact type and wattage specified by Hoover.
• Do not touch the new lamp glass with bare fingers; use a cloth.

Technician-level checks:

• If the lamp is not user-accessible, remove the outer cover to reach the lamp housing.
• Test the lamp for continuity; replace if open.
• Check wiring and connectors to the lamp holder.
• Verify that the control PCB is switching power to the lamp when the door opens or cooking starts.

Note: Never substitute a higher-wattage lamp; overheating and damage may result.