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

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Sears Garage Door Opener Problem

I have a Sears Garage Door Opener that was purchased in about 1993. It is a Craftsman Model 139.53625SR (1/2 HP). The door itself is not in a bind or sticking, but the opener reverses near the end of its travel on the way down on an irregular basis, usually when it’s humid. I have adjusted the down Force screw to the extreme limit to allow the door to close. Does this mean the primary circuit board is bad? Given the cost and the opener’s age, am I better off buying another opener? Again the door is easy to open / close by hand, with no evidence of sticking. There is no light detection device at the base of this door.

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  • JERRYJ1940 Aug 06, 2008

    i tried to reset code and now the door does not open all the way after setting code ,when i try it for the first time it works and then it does not move ,it seems like it is not holding a code now.


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I have three cars with three remotes. The remotes stopped working in all three cars. I have reset each remote by pushing the red learn button. That will last a day then each remote will stop working one by one and I have to rest them again with same results. What is going on?

Posted on Feb 27, 2014

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It sounds like it might be humidity getting into the unit, but it's hard to diagnose. Check your sensors to make sure they are aligned, and let up on the down force screw, sometimes adjusting it too much can cause the opener to react this way. If neither works, it may be time for a new opener. Today's opener are pretty long lasting and i would say you got your money's worth with 16years. A new Craftsman is approx $200 ... so may be worth it to splurge a little.

Posted on Feb 18, 2009

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