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

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I think I've accidentally activated the lock feature...

...because the wall mount works but the remotes do not. My unit is very old and I don't see a little "padlock" button on the wall mount. How do I deactivate the lock feature? Thanks!

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  • patanderson1 Feb 12, 2009

    Thanks, Marty, for responding! It is a Sears Craftsman and I think the unit is about 25 years old. I'm at my office so can't look at the housing to find model #, but I have one of the remotes with me -- the sticker on the back has 4 white boxes containing: K1026 05/94 (date) 139.53779 HBW0709 (very faded so some #s might be wrong) I think the motor housing is black. The wall button is about 4"x4" with just one long white button at the bottom, and it is now continuously flashing green, but works fine -- there is no lock button but I'm wondering if I somehow locked out the remotes. I don't have the manual -- just bought the house a year and a half ago. Thanks for your time -- Pat

  • patanderson1 Feb 12, 2009

    P.S. -- don't know if this will help but the remote (also Sears Craftsman) is 3-1/2" x 1-1/2", black with 3 white buttons -- from left to right there are two small buttons and then a longer button. The remote also has a small green light in the right hand upper section -- the light comes on when you press each button but the remote doesn't open the garage door. Thx!

  • marty metzger May 11, 2010

    My unit is very old. Just what does that mean? 10 years? 20 years? What ,odel number, What color is motor housing. What does wall button/control look like? Give some info to work on


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Does logic board on motor have a small pushbutton or dip slide switches? If pushbutton, push it for 10 seconds. let do. panel light stop blinking? Unit somehow got into lock mode, even though you do not have lock button. If this has stopped light from blinking, you now have to code remotes and or keypad back in. Push the little buton for 1 second and push a remote. Light bulbs on unit should blink. Take next remote (or keypad) and repeat this sequence for each one. Let me know. If you have safety beams, liftmaster should help you. w/o beams they will not support.

Posted on Feb 12, 2009

  • marty metzger Feb 12, 2009

    after you push little button for 10 seconds, pull power cord for a few minutes then continue.


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