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

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On an older Sears garage door opener the door keeps going up until the bracket that attaches to the track bumps into the main control box and goes back down. This old of a model does not have electric sensors so what is telling it to stop?

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There must be a contact switch that tells it when it reaches the up set point. Find the adjustment screw for the up travel, and see what it is adjusting. If there are some copper contacts, clean them up. I have an older closer without electric eyes at my work place, that works like that.

Posted on Jan 23, 2011

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Without a model number no one can help you. They sold millions.

Posted on Jan 03, 2011

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1 Answer

I had to manually close my craftsman garage door and now it won't respond via the remote or the wall button. Chains move but not engaging with door.


Look for a red handle with a rope attached along the bar from the main unit to the door. Pull this handle and release until it engages the track again.

Jul 07, 2011 | Craftsman Sears Liftmaster Garage Door...

1 Answer

I have a sears craftmen garage door and the control switch on the wall light keeps flashing and I need to know how to get it toa solid light and when I press the button to close the door it goes few...


When the door reverses to the open position and the main light flashes 10 times it is a door sensor problem. Usually the sensors get bumped and need to be tweaked so that they are once again pointed at one another. Each sensor has a small light that must be on for them to work. The light on one sensor stays lit all the time and the other sensor light is only on when they are pointed at one another.

The flashing light in your wall control is a separate problem. One of the buttons on the wall control has an icon of a lock. Press and hold it for 3 seconds and release. It should stop flashing.

Jun 15, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Sears garage door opener only open half way going up..


this one is easy...there inside your garage door opener, the one on the top of your ceiling in your garage has little like knobs ..mine has a straight like screw driver circles attached to knobs. Round dials with screw driver like knobs on top of them...they are adjustable. your "tune" them until they just stop where you want them, don't forget to grease your chain, keep your tracks clean of dust, and make sure your safety "stops" are working properly so that if children are in the way, it will stop. Also..make sure there is nothing in the way of the track. If the sensor "senses" a block...that will also cause it to stop halfway. Now if you could tell me how to change my combination on my keypad...I'm all set.

Apr 15, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door spring broke and need to get the car out unti repaire


pull the rope attached to the garage door opener.  And get a friend to help you lift the door.

Mar 15, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

Chamberplain Garage Door Opener


The screws that attach to the garage door from the arm pulled out of the garage door and left holes in the panel. I tried to anchor the screws but they keep pulling ou..what do I have to do to secure the screws in?

Jan 02, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

My garage door will not stay down when I try to close it.


IF THE DOOR CLOSES ALL THE WAY WHEN HOLDING DOWN THE WALL BUTTON AND REVERSES 6" FROM THE FLOOR WHEN NOT HOLDING THE BUTTON.
I WOULD GUESS THAT THE SAFETY EYES ARE MOUNTED ON THE TRACK.
WHEN THE DOOR CLOSES THE TRACK AT THE BOTTOM IS TOO TIGHT CAUSING IT TO FLEX AS THE DOOR GETS NEAR THE BOTTOM. WHEN THE TRACK FLEXES THE EYES ARE POINTING FURTHER AWAY FROM THE DOOR AND EVENTUALLY THEY ARE TOO FAR OUT OF ALINMENT AND THE LED WILL GO OFF - THE DOOR GOES BACK UP.

SOLUTION: YOU CAN USE THE CLAW END OF A HAMMER TO TAP THE TRACK OUT A LITTLE WIDER - TAP NEXT TO THE WALL ON THE BRACKET THAT HOLDS THE TRACK TO THE WALL. MOVE THEM ABOUT 1/4" EACH SIDE.

OR

YOU CAN MOUNT THE BRACKETS TO THE WALL OR THE FLOOR.

THIS SHOULD SOLVE IT

HAVE A GREAT DAY

Dec 19, 2008 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

LiftMaster Garage Door Opener


IF YOU ARE TALKING ABOUT THE ROLLER ON THE DOOR - THE TRACK IS TOO WIDE ALLOWING THE ROLLER TO COME OUT. USE THE CLAW END OF A HAMMER TAP THE TRACK MOUNTING BRACKET AT THE WALL TO MOVE THE TRACK IN CLOSER TO THE EDGE OF THE DOOR

Aug 28, 2008 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Opener not working properly


Garage doors have safety sensors so the door does not hit the car or anything else that gets in the path of the door. Check to see if anything is blocking sensor mounted on the track near floor. Also sensor my have been bumped and not in alignment. Hope this helps

Aug 23, 2008 | Sears Craftsman LiftMaster Chamberlain...

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