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

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Sears 1/2HP opener: The outside keyless pad works, both remotes work and the sensors activate when you cross the beam but the primary inside switch (the one with the lock feature and light button) does not. Nothing happens when pressed, the led light doesnt even work. How can I test to see if the problem is in the switch or the logic board.

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It could be the wall control or the wiring to it. Easy way to test the wall control is to remove it from the wall and use a screwdriver to temporarily short the 2 terminals together. If it still doesn't work you will need to short terminals #1 and #2 together on the back of the motor unit. You don't have to worry about getting shocked. There isn't enough voltage there.

Posted on Apr 04, 2011

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Sears garage door opener wall switch works properly (I do NOT have to hold button in to close door), remotes don't work. Sensors are solid green and door reverses when beam is broken when activate

If you recently changed the light bulb in the unit, try changing it back to a basic clear bulb. I just had the same problem, and after research, found that changing bulb to a new type LED bulb messed up the remotes. A good test, is to try the remotes when the garage door light is "OFF". My remotes worked as long as the light was "OFF". I changed the bulb back to basic bulb, and everything works fine!!

Mar 22, 2013 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Keyless pad will not communicate with reseiver

Are you sure you purchased the right keypad? The model you should have is 139.53681

May 03, 2012 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Ladies / Gentlemen: I have a Craftsman 139.53975SRT1 Garage Door Opener. What is the correct keyless entry pad for this opener? Will a 139.53876 keyless entry pad work with this opener? Thank You! ...

The correct keypad for your opener is 139.53684. The 53876 keypad is an older technology and will not work correctly. If you program it you will find your remotes no longer work and if you reprogram your remotes the keypad will not work.

Sep 08, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Installed new Sears keyless pad and it worked. Then programmed remote handheld door opener and it worked...but now my keyless pad is no longer working. How do I get both the keyless pad and handheld door...

It is really important that you get the correct keypad for your opener. If you got the wrong one you will have the problem you describe. There is a possibility the remote is bad but the odds are against the keypad at this point.

Oct 19, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Older model keyless will not open new craftsman garage opener.

inside or on the back of the opener motor housing or sometimes on a remote receiver (an external box connected to the motor unit and a push button) is a set of switches ... if you take your opener apart you should also see a set of switches ... those have to be set the same way as the opener ... thats the code select ... make sure the battery is ok .. you can check with sears to see if your older remote is compatable ..

Oct 07, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Lights on garage opener do not come on when safety beam is crosse

Hello,I was an installer for sears and had over 27,000 installations under my belt! I am extreemly familiar with theese machines and I can tell you this : Your absolutely correct that the lights do trip on when you cross the beam ,this was a new feature started around 8 years ago on the liftmaster brand that makes also the craftman line and the home depot speacial the chamberlain line , all theese machines are identical in internal parts and remotes and keypads that will work on any of theese machines ,now do the light on the machine work from the wall pad ? and do you have the premium console with the light function? do the infrared sensors work when you cross it,s path when the door is coming down? if all that is still working properly then the sensors are working and sending the correct signal to the mother board ,your problem would be safe to say is in the board and they are easy to replace but rather expensive around 79 dollars ,so my sugestion is that the feature is nice when your outside talking to your neibor and come in thru the garage where the lights are probably off already and can have lights come on as soon as you enter ,But with more new idea,s being built into theese machines theirs room for more failure so the bottom line is if you can live with it then it won,t cost you ,if you like the feature and can,t live without it and for safety then order the part by taking the model # off the board and google craftman logic board and try and find yourself a decent deal on one that you can replace just by removing 4 screws onthe corners and a 16 pin plastic connector that just plugs into it counterpart wired to the machine , it,s simple and it takes me 5 minutes ,maybe a first timer 10 minutes ,but i have to admit that i use power tools that zip the screws out in seconds ,Well i hope you choose which option is best for you and I Thank you for your question ,if you feel i was of help to you please leave a good rating Sincerely Glenn Mayer

Mar 05, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Keyless pad and remotes not working but pad inside garage does

Be sure the remotes you have work with the operator you have. Check to be sure your batteries are good. Press and release (do not hold) the "Smart button). Press and hold the button on your remote about 2 seconds. If that does not work your remotes are bad or the reciever could be bad.

Jan 10, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Outside garage door key pad will not function in very cold weathe

Yes, that is an issue.  My suggestion is to replace the outside keyless with a wired keyless (Domino GD-1).  This will get your batteries inside so they can stay warm.

Dec 30, 2008 | Sears Craftsman LiftMaster Chamberlain...

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