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

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I have a year-old Craftsman garage door opener model #139.53985. The keypad and remotes work only sometimes if at all. A Sears Tech came to my house for $75 and said I needed a new logic board which he would install for $252. Is it difficult to install a new board? If I install a new board myself for $100, will I have to buy new keypad and remotes?

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  • Master
  • 378 Answers

The logic board is easy to install, no need to change the remote and keypad but you have to reprogrammed the remote.

Posted on Jun 17, 2009

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1 Answer

Bought house with craftsman garage opener. Owner only had one remote. Bought a new remote at Sears that matched color code. followed instructions to code remote...that worked but made the old remote non...


Post the model number of the opener and the model numbers of the remotes. The opener model number is found on the end closest to the door and starts with 139.

Try programming the keypad like this:

Locate the smart/learn button on the rear of the motor unit near where all those white wires go. Press and immediately release this and then walk over to the keypad and key in any 4 digit code you like and press enter.

After programming the keypad see if either remote will work with it. Post this information also.

Oct 24, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Nnew Sears garage door opener - old keypad


Yes,buy the new keypad in the safe side.Probally have new Inferred signal codes by the new remote might work with the old keypad.

Mar 16, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Programing garage door opener


Hold the button on the remote and press and immediately release the smart/learn button. Do this for each of your remotes.

For the keypad press and immediately release the smart/learn button. Walk over to your keypad and key in your 4 digit code and press enter.

If these instructions don't work you have a bad logic board.

Dec 28, 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

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

We moved into a house with a LiftMaster garage door opener that we are guessing is almost 10 years old. No problems when using the one handheld remote we were given or the wall control; however, when...


Just to satisfy me would you try your original handheld remote once to make sure it is working properly. The wall control is hardwired so it is not a question.

Sep 22, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Keypad and remote will not open door


Did the remote and keypad work before you changed the battery? Changing the battery in the keypad should not affect the remote.

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

1 Answer

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.

Dec 16, 2008 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Clicker garage door keypad works inconsistently


no relation. did you plug rpm sensor and logic board connectors on well.

Dec 11, 2008 | Sears Craftsman LiftMaster Chamberlain...

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