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

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Garage door opener

My garage door opener works fine except in cold weather,Motor will not work with either remotes or wall pad.

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You can turn up the up and down force on the motor head to give the unit more power. During colder weather the unit needs more power. Afterward do a 2x4 safety reversal test. thanks, BB

Posted on Sep 03, 2010

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We have a craftsman garage door opener. Recently all remotes including the key pad began working inconsistently. Even the hard wired button on the wall is finicky. The door will open a little and then...


First thing I would do is remove the cover from the motor unit and check the drive gear. It is a white nylon gear just in front of the motor. It will be very obvious if it is going bad. The part number is 41A2817 and is available from Sears or any good door opener service company. It will come with instructions.

Aug 16, 2011 | Sears Craftsman LiftMaster Chamberlain...

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Garage door does not open in cold weather


Does it make any sounds? Have you tried the wall button? Do you have more than one remote that doesn't work? A keypad?

Dec 12, 2010 | Sears Craftsman LiftMaster Chamberlain...

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I recently bought a house which has a craftsman 1/2 HP garage door opener. The garage door opener works fine using the wall mounted pad and also the numeric key pad, but not with the remote that came with...


If you didn't, try programming the remote this way.

Press and hold the button on the remote and then press and immediately release the smart/learn button on the motor unit. If this doesn't work you need to make sure you have the correct remote for the model opener you have. Your model number doesn't bring any results from Sears Parts.com.

Nov 10, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I have a 1/2 hp craftsman opener. Remotes work fine. Wired wall unit has a blinking light on the open button and will not work Lock pad and light pad work but not the operate pad.????


Try pressing and holding the lock button for 3 seconds to stop the light from blinking. Your wall control may be bad. Usually when that light is blinking it is the remotes that will not work.

Jul 02, 2010 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

Craftsman Garage Door remotes do not work. 139.663953


On the rear of your motor unit near where all those white wires go you will find the smart/learn button. Hold the button down on your remote and press and immediately release the smart/learn button. Do this with all your remotes.

Sep 28, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage Master 1/3 HP 1997 Door Working, not responding to Remote


I have the exact same situation, except my model (139.53607) is older than yours and does not even have an LED. Remotes only works after after shop light goes off (5 minutes or so), but wall button works fine. Did call Sears Service and the tech told me the logic board is probably shot. Don't want to waste money on service call so I'll probably have to buy a completely new unit in the Spring and go through the winter without the use of a remote.

Jan 24, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Wireless Keypad wont allow use of other door openers


hit learn button for 10 seconds. now nothing will work except wired buttons. Hit learn for 1 second and put in yur 4 digit keypad code and hit enter, light on motor will blink twice. hit learn again for 1 second and push button on remote. again bulb will blink. continue pushing learn for 1 second and adding another remote.

Dec 26, 2008 | Sears Craftsman LiftMaster Chamberlain...

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Sears Craftsman Garage Door Premium Control Console Failure in Cold Weather


first guy has the mounting screws tp tight or the wire is preventing wall station for sitting flush against wall....second guy check your safety eyes...

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