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

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Garage door will not keep sinc with remotes or keyless entry have to reset

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  • Don Maggard Sep 10, 2010

    What does "keep sync" mean?

  • lilbigredhea Sep 11, 2010

    Have you added any new remotes or keyless entries to the system?

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1 Answer

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  • Master
  • 3,197 Answers

Sounds like a bad logic board.

Posted on Sep 13, 2010

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1 Answer

Craftsman 3/4 hp garage door opener


not sure, but see the users manual here:

http://www.manualslib.com/manual/32293/Craftsman-139-5399.html

Aug 14, 2012 | Craftsman 3/4 Hp Garage Door Opener System...

1 Answer

I have a craftsman garage door opener, of which I tried to program a new remote. but it did not program. in the event I accidently errased my keypad password. How can I reprogram the keypad, i cannot...


Hello there,
It actually depends on what you are trying to program. And these instructions apply only to openers that do not have dip switches on them.
Remotes: push don't hold the colored learn code button all models have different colors. After pushing the button hold the remote behind your back and push it three times. On the third time the door should run.
Keyless Entry: Program the code you want into the keyless. Push the colored learn code button and then enter the code and push enter three times slowly. on the third time the door should run.
Home-Link. Hold the two outer buttons until the blinking pattern changes. Then hold the button you wish to program and point and click your remote at it. Push the colored learn code button and push the homelink button three times.
There are two models of the Wireless Keyless Entry System, the 740CB and the 940CB. The 940CB is for use only with Security+® garage door openers having an orange/red smart/learn button. The 740CB will work with all openers manufactured since 1990 that have a yellow, white, gray, or green smart/learn button. It will not work with Security+® openers.
To program the keyless entry, first locate the smart/learn button. On our chain drive models, this button is on the end farthest from the door. On our belt and screw drive models, it is on the right side as you face the door from the opener. You simply press and release the smart/learn button. You now have 30 seconds to enter your four digit PIN number into the keypad and hold the enter button for five seconds. Wait one minute and test the keyless entry by entering your four-digit PIN number and pressing enter.
With some Security+® models, you can also program your Model 940CB Wireless Keyless Entry without climbing a ladder, right from your Multi-Function Control Panel. Simply enter your pre-selected code and press and hold the enter button on your Keyless Entry. Then press and hold the light button and the pushbutton on your Multi-Function Control Panel. The garage door opener lights will flash to confirm that the Keyless Entry has been successfully programmed.
Hope this helped you solve the problem. All the best my dear friend. Elect_Comp

Sep 02, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

How do you reset your code on the outside touch pad for garage door when you dont no the 4 digit code from previous owner


Get all the remotes together.
On the end of the GDO (where the wires are) is a "Smart" button.
Press and hold the smart button for 10 seconds (until the LED goes off). This will clear the memory.

Now press and release the smart button, take one of the remotes and press one of the buttons (usually the top, largest one). The light should flash on & off.
Perform this same procedure for all other remotes. Also do the same with the keyless entry. Always press the buttons slowly on the keyless entry. It is easy to mispress a button.

Jan 02, 2011 | Sears Craftsman LiftMaster Chamberlain...

6 Answers

I need KLIK2 remote instructions


How do I connect KLIK2 to a linear with a learn button

Feb 17, 2010 | Universal Garage Wireless Keyless Entry...

1 Answer

Reset Craftsman keyless entry pad.


What you are asking for is not possible. You need to call a garage door repair technician. They will drill a hole through the door and using a special tool can pull the rope to release the door.

Sep 25, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Only Keyless entry or remotes can be programmed but not both


If you can program your remotes but when you program your keypad the remotes quit working and vice versa you have either the wrong keypad or it has reverted to an earlier technology. Make sure the keypad is for your specific model door opener.

Jun 25, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I have a craftsman garage door opener,i also bought a craftsman.


some door openers have a limited memory or a maximum number of remotes allowed this is usually 5-8 total entries. I works this way as you enter a device is progams into slot 1 on the memory then the next entry goes into memory 2 etc. if you exceed the number of memory slots then hte 1st one will be omited. You may have overridden your keyless if you have multiple remotes plus you car(s) may exceed your limit or you had several attempts with the keypad that used up the available slots. I recommend you try to reset the remotes now that you have successfully programed the keyless. If you find that reprogramming the remotes knocks out the new key pad then repeat the steps with all the remotes in sequence one after another. good luck

Apr 11, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Keylees entry and remote controls do not work at the same time


There are two types of technology with this operator (rolling code and non-rolling code). This operator will except one or the other but not both. It is not uncommon for a rolling code (Security+) remote or keyless to lose the "rolling"part of its technology and become a non-rolling code device so it is not compatable with the rolling code technology. You will need to replace the one remote or keyless that is not like the others.

Nov 15, 2008 | Sears Craftsman LiftMaster Chamberlain...

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