my garage door opener makes the motor noise but doesn't open or close?

It’s a Sears Craftsman Garage door opener of unknown age but looks to be well maintained by the previous owner.

1. You can run the door up and down by pulling the red release rope and the door itself works fine with no binding or restrictions.

2. I believe the chain tension is correct. The bottom is just a hair below halfway up the track and seems rather taunt.

3. The “trolley” I believe it is called is located at end away from the motor by the door. Not up by the motor unit when the door is down as it should be and I can force it to move an inch, I do not believe it to be stuck.

4. When you activate the motor from the wall switch it runs but the chain does not move. Even with the door released (effectively a weight off situation).

5. I have reached in and can move the gear on top of the unit maybe a quarter if an inch so I do not believe the gear on top of the unit to be stuck.

6. I can “help” the door up and down by lifting/pulling it. But it is jumpy however it stops at the right times on both ends.

7. Both green lights are illuminated on the safety sensors (this would not stop it from opening anyway… would it?)

8. last but not least the green flashing light on the unit. It is erratic, it flashes once then five seconds later once but sometimes twice and then 10 or more seconds it goes back to one flash then maybe one flash then a few seconds later two. The only constant with this is I have never seen it flash twice… well twice in a row.

3 Responses to “my garage door opener makes the motor noise but doesn't open or close?”

  1. James says:

    Hey Christopher! Sorry to hear about your garage door opener issues. Our company is based out of Indianapolis and we specialize in commercial and residential garage door repair and installation (

    From what you have mentioned, it appears that you have a couple issues working together. First, the fact that the motor is working but not engaging sounds like your may have a stripped internal gear. You can replace the gear.

    The other issue comes in with the flashing lights. This is either a circuit board issue or a photo cell (safety sensors) malfunction. If the circuit board and the gear are toast on the opener, I would suggest replacing the entire unit.

    Ultimately, I would have someone come out and take a look at the opener. Also, feel free to give us a call at 317-570-5436 and ask us any other questions you may have.

    Hope that helped. Good luck!

  2. J-BOY says:

    I guess chain are derailed from sproket.

  3. Henry H says:

    Un plug the operator and take the cover off and you will see some white plastic dust in the cover if so your drive gear is bad you can buy just that part and replace it your self Good Luck

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