Microwave cavity light flickers during operation, but heating is normal.

Safety: Unplug the appliance and allow the lamp area to cool.

Checks:

• Access the cavity lamp and ensure it is firmly seated in the holder.
• Inspect the lamp holder contacts for corrosion or loose connections.
• Replace the lamp if the filament appears darkened or worn.

If flickering persists with a new lamp and secure connections, the control board's lamp driver may be unstable, and the board might need replacement.