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

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Door opener only opens a little bit

Only in winter time, the door will only open a few inches to half way up, then when you hit the button again it goes to shut, but if you hit it again right away after it begins to close then it will open all the way or if i lift on door with minimal effort it will open

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  • Anonymous Jan 10, 2009

    one reversing sensor is green and the other is yellow. The door will not operate properly . any suggestions

  • lueken_anton Feb 23, 2009

    i also have the two diffrent colors on the sensors and it only opens about a foot or so and if we try to open it manualy it doesnt work but if we turn it on and i pull on it while its going it works

  • samiam0122 Feb 24, 2009

    I have the exact same issue. I read the manual and it mentioned weather might be an issue. I was wondering what component(s) the weather might affect? I've checked the wiring for a possible short, and the sensors are lined up properly. Any info would be greatly appreciated.


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I have run into this problem before this might be of some help
check your track and see if someone has greased it if so get a rag and solvent and remove all grease from roller track this track is never to be lubricated in the summer grease thins and lets dooor move but in winter grase hardens and acts like glue binding door past set limits.

Posted on Jan 10, 2009

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