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

1 Answer

Door opens about 18" and stops

3 year old Liftmaster 1/2 hp
Manually door opens fully
No flashing on LED/learn button

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  • khhelpme Feb 05, 2009

    Same problem, and it appears to be the belt. It's taut on one side of the rail and slack on the other. Should I disassemble and reassemble the belt?

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  • Master
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Check the drive belt for tightness. Check for a bent or obstructed track. Overhead door openers have a safety clutch built in in case something or someone gets into the path.

Posted on Feb 01, 2009

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I have a Craftsman Keyless entry model 132B2386-6 with flashing lights, wont open. Already put in new battery still doesn't work


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Mar 27, 2008 - I have a Craftsman Security+ Keyless Entry, P/N 139.53684 purchased with my ... However, the door will not open, but the keypad flashes as before. ... Check if there is a flashing green light on your wall control in the garage. ... The 2 remotegarage door openers won't open or close the garage door; but the ...

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Feb 08, 2016 | Building Materials

1 Answer

I am not able to program my Homelink (car) opener using the Learn button on my Liftmaster Formula I. I used the Rolling Code program. I went through all the steps, indicator light flashed rapidly, I...


  1. Clear out anything previously programmed into the in-car system from the factory by holding down on the 2-outside buttons simultaneously, until the in-car LED starts flashing rapidly. This may take up to a minute (in most cases, the key should be on auxilary, and/or the car door must be shut).
  2. Decide which button you want to make to be your in-car garage door transmitter. Hold your transmitter up near the selected button, pressing both the garage door remote and the selected in-car transmitter button simultaneously. Hold down on the buttons until the in-car, LED light flashes rapidly. This sets the in-car remote transmitter to be your garage door openers make transmitter, but you are not done. You now need to make this in-car transmitter your personal transmitter.
3. Go to the Learn Button on your garage door opener. The button is usually next to the area where the floppy antenna is connected to the motor head. With Genie it is most often behind the light lens, and an indicator light flashes red when pressed. With Sears or Liftmaster (Chamberlain) it is near, or part of, the terminal screw board, and is a red, green or purple square button with a green, amber or purple indicator light. Press this learn button momentarily. The indicator light will turn on and blink if Genie or otherwise stay lit. For Genie systems, go back to the in-car transmitter button you programmed and press this button 3 or 4 times, or until the door starts moving. This should set your in-car transmitter to your garage door opener. For Liftmaster, Sears, or Linear Megacode press and hold the in-car button you programmed until the garage opener light flashes. Your in-car is now programmed to operate your door.

If this doesn't work your car and homelink may not be compatible.


Nov 22, 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

My craftsman garage door is about 8 years old. It


Make a slight adjustment to the Upward force on the side of the machine. Turn the screw a 1/4 turn each time and test, see if that helps. Also, make sure there are no obstructions or friction when the door opens and closes. Try it manually first.

Feb 18, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

My Craftsman 53684 keyless won't work with my Craftsman 53930DM.


I've never seen the first set of steps you mention. You always need to press the "learn" button first so the opener will be in the mode to capture the new code. As far as I know it is not necessary to hold the Enter button on the keypad (at least I never have). While the "learn" LED is lit on the opener, just key in the new code and press Enter.

Maybe you should try clearing the receiver first by pressing the "learn" button and holding it until the LED either goes out or starts flashing (depends on model). Then try reprogramming. Maybe the little computer is confused.

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

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