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

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My keypad and remotes work MOST of the time. the remotes sometimes will open the door from the edge of driveway, but most of the time, you have to push it 2-3 times and be right up on the garage door. This unit is only 4 months old as has been this way since purchage.

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It sounds like you have a defective logic board. You had a 90 day warranty.

Posted on Jun 07, 2010

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1 Answer

My remote was working sometimes but now it has stopped I replaced batteries and light flashe but doesn't work to open door


If you have only one remote it is impossible to tell if it is bad or if the receiver which is part of the logic board has failed.

May 19, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I have sears opener #139.53989. Every once in a while I have a down problem. It goes down within an inch of the floor and reverses. Sometimes I can hold the wired remote button and it will go all the way...


If the main light flashes 10 times when the door reverses it is a sensor problem. Check them very closely. If they are just a little off one of them will be flickering but it is difficult to see. This can also cause the problem to be intermittent. Tweak them just a little.

It is normal for that light to blink randomly.

Jan 27, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

My craftsman remote keypad and remote car opener don't work in the morning but work at night. I changed the batteries on both. Did I do something wrong. Ron


You didn't do anything wrong. Electronic components sometime become sensitive to temperature. It may require a new logic board.

Oct 17, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

My remote intermittenly opens/closes the garage door


You can find a free manual for your door opener at manualsonline .com You might want to look at how to program it and change the unit to a different frequency. You can sometimes get better response and eliminate interference. Also make sure your battery contacts in the remote are clean.

Sep 26, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Last night none of the remote controls worked (the one that came with the garage door opener or the remote Home link from our vehicle) The keypad also did not work. This morning, I erased all of the codes...


First thing I would do is remove the wire from terminal #1 on the rear of the motor unit and try your remotes. This wire goes to the wall control and it sometimes causes the remotes to quit. If this doesn't correct the problem then I suspect a bad logic board. Especially if you have had any electrical storms.

Aug 14, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

Liftmaster 1/3 HP. Remote and wireless keypad stopped working.


Sounds like the reciever for you wireless devices is not working?

Aug 01, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Antenna/distance


The receiver which is part of the logic board is going bad.

Jul 21, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Liftmaster Remote garage door openers work intermittently.


check to see if your ant. is up inside of the cover it's a little black wire that hangs outside of the operator shiould be about 6 inch.

Jun 02, 2009 | liftmaster Chamberlain Garage Door Opener...

1 Answer

Code Remote and other remotes do not all work at the same time.


Either your keypad has reverted to an earlier technology and will no longer work properly with your opener or you have the wrong keypad. Either way take the model number off the main unit and get the correct keypad.

May 31, 2009 | Sears Craftsman LiftMaster Chamberlain...

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