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

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The door opens and returns right back down without stopping, have tried adjusting it. There are there button on the wall control, open, close and stop. The open works, close does nothing and the stop closes rather than stops the door.

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There could be a short in the switch

Posted on Oct 04, 2009

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6 Answers

I have a Craftman Garage Door Opener Mod#139.53650SRT. It closes completely then goes back up. I replaced the sensors @ the sides of the door to no avail. I have tried to adjust the up and down on the side...


I agree with the closing resistance may be set incorrectly, all openers have a safety feature that senses if something is keeping the door from closing, this is back force, you set the sensitivity at the back of the opener motor control, it is a little dial, reduce the setting just enough to stop the door from kicking back open when it closes, I had this very same problem with my craftsman and this adjustment fixed it.

Oct 08, 2008 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

How do you stop the door leaving a foot open at the bottom?


To stop the door in a partially open position, the button on the wall switch or remote should be pulsed when the door is opening from the fully closed position.

Jul 12, 2014 | liftmaster Garage Door 1/2 Hp

1 Answer

How do i set the travel limits on my craftsman garage door opener 139.53919


  • Open the garage dooricon1.png fully by pressing the wall control button. The bottom section of the door should be right at the header in the "full open" position. If it is too far back, the door cable can become misaligned. If it is not back far enough, you may not be able to get your vehicle in and out of the garage.

  • 2

    Position a stepladder behind the garage door openericon1.png motor. Locate the limit adjusting screws on the left side of the motor housing. Have a friend stand by the wall control button.

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  • 3

    Insert a screwdriver into the slot for the "up limit" adjustment screw. Turn it to the right to decrease the door travelicon1.png and turn it to the left to increase it. Turn the screw in small increments.

  • 4

    Close the garage door by having your helper push the wall control button. Notice the seal between the door and the floor--there should not be any light coming through. Adjust the "down limit" screw in the same way if necessary.

  • 5

    Operate the door by the pressing the wall button and check your adjustments.



  • Read more: How to Adjust a Craftsman Garage Door Opener ' eHow.com http://www.ehow.com/how_5419011_adjust-craftsman-garage-door-opener.html#ixzz2Hm1tx0a0

    Jan 12, 2013 | Sears Craftsman LiftMaster Chamberlain...

    1 Answer

    I have a Sears craftsman model 139.53637SRT garage door opener. My remote has not worked in a long time. I use the wall control button and have to hold the button in order to open or close the garage door....


    It sounds like your door sensors may be bad or misaligned. Make sure the small light on each sensor is lit and not flickering. That could be the cause of your having to hold the wall button down until the door is closed. You can buy a universal remote but if you only had one remote before it could be the receiver that has quit. A new remote would not fix that but the only way to find out is to try.

    Aug 15, 2011 | Sears Craftsman LiftMaster Chamberlain...

    1 Answer

    Door goes down and when it stops at botton, it turns and goes back up ??? Need adjusting ..How can I adjust???


    Adjust the position of the door by using the black and purple buttons. Black moves the door UP (open) and purple moves the door DOWN (close)
    Setting the up position: 1. Press and hold the black button until the LED starts flashing slowly, then release. 2. Push and hold the black button until the door reaches the desired UP (open) position 3. Push the door control or programmed remote control. This sets the Up (open) position and begins closing the door. 4. Immediately when the door begins to close press and release the black or purple button. This will stop the door Setting the Down position: 5. Push and hold the purple button until the door reaches the desired DOWN (Closed) position. 6. Once the door is closed, If there appears to be too much pressure on the door, you may toggle the door back and forth using the black and purple buttons to reach the desired closed position. 7. Push the door control or programmed remote control. This sets the Down (closed) limit and the door should open.

    Aug 11, 2011 | Chamberlain 3/4-HP Whisper Drive Plus...

    1 Answer

    Trying to clear the codes from my Garage Door opener. 41A3615, 139.53615SR, Grey Learn Button, '92 mfg date. I added a Klick universal wireless wall pad and a Klick universal remote and now my neighbor's...


    In most cases, when a garage door opens or closes by itself, or when you find your door open, upon returning home, the problem is due to a short somewhere. This short is most likely to be in one of two places: either in one of your transmitters or in the wall button or its wiring.
    When there is a short in your garage door transmitter, you will often find the garage door is up upon returning home, even though you know you closed the door when you left the house. A short in your transmitter causes a continues signal to be sent. As you are pulling out of the driveway the garage door closes fully and appears to stop, but as the carriage and arm run past the down limit and hits the header bracket it reverses, and the door begins to open, just as you start driving off down the road. You come home to find the garage door is up, as if someone else had opened your door. The best thing to do to troubleshoot the garage door problem is remove the batteries from your transmitters and try operating the door from the wall button. If the problem is intermittent, you may want to do this for a day or two to eliminate the transmitters as the culprit.
    If the problem persists, try removing the wall button wire at the motor head to ensure it is not a short in the wire to the button, then try operating the garage door with the transmitters only. If it stops the problem, replace the wires and test the wall button. It is a process of elimination.


    Mar 29, 2010 | Sears Craftsman LiftMaster Chamberlain...

    1 Answer

    Door won't close, with out hold down on button.


    If the main light flashes 10 times when the door reverses it is a door sensor problem. Make sure they are pointed at one another and the small light on each one is lit and not blinking.

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

    1 Answer

    The door reverses back to open position instead of closing


    SOUNDS LIKE A SENSITIVITY ISSUE UNHOOK THE DOOR AND TRY IT MANUALLY TO BE SURE IT DOESN'T BIND OR IS TOO HARD TO OPEN OR CLOSE.

    IF ALL IS WELL CHECK THE SENSITIVITY SETTINGS ON THE BACK OR SIDE OF THE OPENER.

    YOU WANT THIS SET AS LOW AS POSSIBLE AND STILL OPERATE THE DOOR WITHOUT REVERSING.

    NOTE: THE FULL RANGE OF ADJUSTMENT IS ONLY ABOUT 3/4 TURN SO MAKE A VERY SLIGHT ADJUSTMENT AND THEN TRY IT AGAIN.

    HOPE THIS HELPS

    Feb 20, 2009 | Sears Craftsman LiftMaster Chamberlain...

    1 Answer

    Garage door


    TRY THE DOOR MANUALLY AND RUN THE OPENER DISCONNECTED FROM THE DOOR(WITH DOOR IN CLOSED POSITION).

    THIS SHOULD ISOLATE THE PROBLEM (ACTUAL DOOR PROBLEM OR OPERATOR PROBLEM).

    HOLDING DOWN THE WALL BUTTON OVERRIDES THE SAFETY EYES.
    WHEN HOLDING IT DOWN MAKES THE DOOR CLOSE PROPERLY THE PROBLEM IS IN THE SAFETY EYES.

    ARE BOTH LEDS ON? - CHECK FOR A LOOSE OR BROKEN WIRE.
    ARE THE EYES WIRED CORRECTLY?
    ARE THEY AIMED AT EACH OTHER?

    IF THE DOOR STOPS/REVERSES (WITH DOOR CONNECTED) WHILE HOLDING DOWN THE WALL BUTTON TO CLOSE YOU NEED TO CHECK THE SENSITIVITY ADJUSTMENT.

    HOPE THIS HELPS

    Oct 24, 2008 | Sears Craftsman LiftMaster Chamberlain...

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