Ceiling-mounted garage door opener with its rail and power cord

Garage opener light stays on, or will not light

A light that stays on is usually a feature (light button, motion detection, safety-light on beam break) or a door control/wiring fault; Chamberlain gives a test that separates the door control from the logic board. A dead light is usually the bulb, its type, or the socket.

Single source ~30 min easyBrands: Chamberlain / LiftMaster / Craftsman, All

Before you start

Unplug the opener before touching sockets or wiring.

Diagnostic steps

Unlock all 4 steps with expected values

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OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.

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