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my garage door opener's motor runs but the chain is not moving

Craftsman 1/2 HP bought in 1999

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Craftsman , Garage Door Openers
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2 Answers from these members:
Manage My Life
Check to make sure the trolley isn't disconnected from the door to the track. If someone pulled the release cord this would happen. If that's not it, the cause will either be a broken chain (which I would think you would see) or the drive gears are broken/worn.

If you want to visually inspect he gears make sure to unplug the opener before removing the cover. Once you have the cover removed to where you can see the gears, if you cannot see any damage to them plug the unit back in and try to run it. When it starts to turn the motor pay attention to the gears to see if the worm gear is moving the drive gear. If it is, notice the sprocket to see if it's turning or not.

I'm pretty sure the gear set will be the problem.

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by Manage My Life
December 20th, 2010
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Manage My Life
It is frustrating and can be a security issue when the garage door opener is not working. I did some research for you at managemylife.com and found an expert answer to a similar question that may help until your expert can respond. I attached the link below. You should also provide the model # so you can receive the best possible answer. The link below covers the location. It can also be found behind the light lens. Just click reply below and provide the info.
by Manage My Life
December 18th, 2010
Answered in 18 minutes
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