Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+

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My crafstman garage door opener goes down and then

My crafstman garage door opener model 41A5021-3H goes down and then comes back up about two inches. I replaced the sensor but that didn't help. I played with the dials on the box thinking it was the problem but it didn't help. Al

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Remove the cover from the motor unit and check the drive gear. It is a white nylon gear and is probably stripped.

Posted on May 17, 2010

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SOURCE: my crafstman garage door opener goes down and then

Remove the cover and check the drive gear. It could be stripped.

Posted on Mar 26, 2010

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1 Answer

How do I get my garage door to open?


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The door is going down within about two inches of the floor and then goes back up. It has been doing this occasionally for the past few weeks, but now it will not stay down. The light flashes 10 times each...


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My Chamberlain Liftmaster Formula 1 garage door opener just started going up 2 inches then stopping. If I hit either the inside wall mount or the remote in the car it just goes back down 2 inches and back...


You need to check the door springs to see if one is broken and also remove the cover from the motor unit and check the drive gear. The gear is white nylon and will be very obvious if it is bad. The part number is 41A2817 and is available at any good door service company. It will come with instructions.

Apr 03, 2011 | Sears Craftsman LiftMaster Chamberlain...

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How do I program a remote garage door opener for a Crafstman 139.53615SR?


Locate the smart/learn button on the rear of the motor unit near where all those white wires go. Hold down the button on the remote while you press and release the smart/learn button. If everything is working and it is the right remote for the opener it will be programmed.

Aug 30, 2010 | Sears Craftsman LiftMaster Chamberlain...

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My crafstman garage door opener goes down and then


Remove the cover and check the drive gear. It could be stripped.

Mar 26, 2010 | Sears Craftsman LiftMaster Chamberlain...

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Crafstman 41A435-7A


If the board you say is broken is the one you got the part #41A4315-7A, that is the part number you need. You can get it at Sears or any good door service company.

Sep 06, 2009 | Sears Craftsman LiftMaster Chamberlain...

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I have a gargae door that goes down only not up. Plus when it goes down it stops at the bottom and retrives 6 inches back up.


Check to make sure that the garage door is balanced. Sounds like the springs need to be adjusted and the travel limits need to be reset.

Dec 30, 2008 | Sears Craftsman LiftMaster Chamberlain...

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