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

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Craftsman Garage Door Opener, opens/closes intermitently

The unit is about 11 years old and over the past six months has given us a lot of grief. Somedays it operates just fine. Others, it may or may not open/close using the remote transmitters. I have tried everything I know to do... which isn't a lot. I cleared out the codes in the remotes (both the hand held transmitters and the HomeLink in my wife's Pacifica) and I have tightened the sensors on the tracks. Still the smae problem. Anyone else having this issue? Anyone have an answer... short of replacing YET ANOTHER thing in this house?! In the past two year have replaced HVAC, water heater, dishwasher, stove, fixed dryer, fixed refrigerator, gee, what else? :)

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Check all the electrical connections inside the unit. If it is intermittent it may be hard to pin down. Other than that you will probably have to add it to the list of Yet Another Thing. Depending on how often it is used 11 years can be past the life expectancy.

Posted on May 02, 2017

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Posted on Jan 02, 2017

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SOURCE: Garage Door Remote Not Working Consistently

Lift Master Security Plus remote works only intermitenly, It seems to lock after a few tries, Works from inside garage, Seems to lock up after few tries, Wall opener fine. Changed batteries several times. Can't understand why it works and then doesn't. Tried cleaning sensors and wires,

Posted on Oct 29, 2008

Door Tech
  • 98 Answers

SOURCE: Remote will not operate garage door opener from outside garage

Will the remotes work in the garage? If yes but not outside with the door closed you might have radio interferace with your remotes. You might have to chage to a your reciever and remotes to a different brand (frequency). Sometimes it is less trouble to change out the operator. Chamerlain changed frequency from 390 (old) to 315 (new). 

Posted on Jan 02, 2009

  • 244 Answers

SOURCE: keypad garage door opener will not operate

what keypad are you using with new opener? Frequency has changed. can't use old one. you probably never needed to change things; just needed to follow proper coding procedures.

Posted on Jan 28, 2009

  • 118 Answers

SOURCE: Garage door opener transmitter/receiver compatibility

The old transmitters are 390 mhz and will not program. I need more info on what you are doing to solve the homelink problem. Your vehicle's owners manual should show how to program. Then press learn button and within 20 sec press and hold homelink button that you programmed.

Posted on Jan 30, 2009

Door Tech
  • 98 Answers

SOURCE: remote/homelink and touchpad problem

Your keypad is not the same "generation" as your remotes. You operator will work with your security plus remotes or your old keypad but not both. Yor cheapest solution is to replace your keypad.

Posted on Feb 07, 2009

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1 Answer

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try adjusted the sensor controls on the sode of the unit other wise replace the logic board
http://www.chamberlain-garage-door-openers.com/circuitboardcompatibilitychart.htm

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