Craftsman Garage Door Will Not Operate — Fix

What Does This Error Mean?

If your Craftsman opener is completely unresponsive — no lights, no motor sound — start with power. If lights work but the motor does not, look at the wall console lockout and the door balance. If the motor hums but does not move, suspect the gear and sprocket assembly.

How to Fix It

Check the courtesy light on the motor head. If it is dark when you press the wall button, the opener has no power. Test the outlet with another device, then check your home breaker panel.
If the light works but no motor sound when pressing the wall button, look at the wall console for a lockout switch. Some Craftsman wall consoles have a slide labelled LOCK or VACATION — disable it.
If you hear the motor hum but the door does not move, the plastic gear and sprocket assembly inside the motor head has likely stripped. This is a $20 part and a 1-hour DIY repair on most Craftsman models.
If the motor runs and the chain or screw drive turns but the door stays still, the connector between the drive and the door (the trolley) has separated. Reattach the trolley to the drive and to the door arm.
If everything mechanical looks fine but no command does anything, the logic board has failed. Replacement boards are available, but on a 15+ year-old opener replacement of the whole unit is often more cost-effective.

Frequently Asked Questions

What is the gear and sprocket assembly and why does it fail?

It is the plastic gear inside the motor head that drives the chain or screw. It is plastic by design — it acts as a sacrificial part that fails first if the door binds, protecting the much more expensive motor. After 10-15 years it can also fail from wear alone.

How do I know if I need a new opener vs a repair?

If your Craftsman opener is older than 1993, replace it for safety reasons (it lacks modern photo-eye sensors). If it is 15-20 years old and needs a logic board, replacement is usually more economical. Otherwise, repair makes sense.

Are Craftsman openers still being made?

Sears stopped producing Craftsman-branded openers around 2018. Existing units continue to work, and Chamberlain parts fit them. New garage door openers should generally be replaced with Chamberlain or LiftMaster directly.