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

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Garage door opener won't operate - Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+

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  • f537red Jan 12, 2009

    same problem..eyes are lit...i adjusted down force and travel...worked good for a month..now nothing..i released door to run cable freely...motor hums in down and up position...but cable does not travel...

  • Joseph Chapman
    Joseph Chapman May 11, 2010

    I need more information. What kind do you have? does it work with the wall button. Are the photo eyes lit? What color are the photo eyes?

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I opened the housing and found the problem. Severely stripped gear.

Posted on Jan 12, 2009

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2 Answers

Remote won't work but keyless entry does on garage door


If the light in the wall control is flashing press and hold the lock button for 3 seconds. Your remote should now work.

Jul 23, 2012 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I have the door bell style wall button-how do I unlock the unit so the remotes can be synched? I have pressed green button on back of unit with remotes but they won't operate the door.


You don't unlock anything to program the opener for the remotes. If everything is working you do this:

Press and hold the button down on the remote while you press and immediately release the smart/learn button. Do this for each remote.

Jul 11, 2012 | Sears Craftsman LiftMaster Chamberlain...

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Remove the cover and check the drive gear. It is a white nylon gear just in front of the motor. It will be obvious if it is bad. Tell me - if it won't open how do you know it won't close?

Feb 22, 2012 | Sears Craftsman LiftMaster Chamberlain...

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Both remotes won't work for Craftsman garage door opener model 139.53672SRT1


You will need to purchase a new remote with the same model number as your old ones. When you get this you will find that you can program the new one with one of the old ones but not the other. Remove the battery from the bad remote and discard it.

Jan 02, 2012 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

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Sounds like the receiver in your opener has quit working. Unless you break in you need to call a door technician. They can drill a hole in the door, use a special tool to pull the manual release and open the door. You should then have them install a keyed manual release if this ever happens again. They can also repair or replace your opener.

Jun 20, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

My nephew kept opening and closing my garage door, now the door won't open with the opener and I can lift it by hand. I tried pulling the cord to move it back to electric but it won't work... any...


The motor has a thermal protector that will cause the motor to quit when it gets hot. If you let it cool off it will automatically reset and should work again.

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2 Answers

Garage door won't open


You probably have a broken spring on your door

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