Dryer drum light stays on even when the door is closed, or never comes on at all.

Safety first: Unplug the dryer before accessing the door switch or light assembly.

Step-by-step checks:

• Test door switch: Press the door switch plunger by hand with the door open. If the light does not change state, the switch may be faulty.
• Replace bulb (if fitted): On models with a replaceable bulb, remove the lens cover and fit a new bulb of the correct type.
• Check wiring: Access the switch from behind the front panel and inspect the wiring for breaks or loose connectors.

When to call a technician: If the light is LED-integrated or controlled directly by the PCB, board-level diagnosis may be needed.