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

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Securoglide roller garage door stops part way down

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  • Anonymous Jan 19, 2009

    door goes part way down when press key fob then stops. I then have to hold button in until door reaches ground

  • Vince Heuser May 11, 2010

    need more info

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  • 118 Answers

You have problem with the safety eyes. Make sure both lights are on. If not adjust until both light are on.

Posted on Jan 27, 2009

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I have a 6 year old craftsman 1/2 HP model139.53985D garage door opener. Sometimes it open/closes fine - other times it opens or closes 6 inches at a time and stops. Springs are fine, worm gear is fine -...


Generally when the door is closing any problem will cause the door to reverse to the open position and stop. This is designed into it. You say your opener just stops when going up or down. This makes me think there is a bad connection somewhere and you are simply losing power. If this is so you should notice that all the small lights that are normally on go out. If this only occurs when the door is going up you may have a bad RPM sensor board. This is a small printed circuit board just in front of the motor.

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1 Answer

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Garage door work like a wedge. As it goes down the door get closer to the jam. So if you moove the weather stips closer to the door that probebly solve your problem. Do that whith the door complitely close.

Good day Paul

Feb 10, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

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Check the springs on your garage door. If one is broken, the opener will not have enough power to raise up and it will stop like that.Or the up and down limit settings have gone off or bad.

Dec 08, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

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You need a general inspection of all related parts. Make sure none of the track mounting bolts have loosened leaving a misalignment of track segments. CAREFULLY with power off use fingers. turn EACH roller. Something as simple as a bad roller bearing can cause this, even a flat spot on a worn roller. Rollers can be bought at a home supply store. These are 2 most causes.

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My 1/2 hp Chamberlain garage door stops while going down even when I am holding the wall unit. If I stop it and restart it goes a little further and then stops. Both sensors have green lights and they are...


On the back of the motor unit you will find the down force control. You may have to remove a light lens depending on your model. Increase this a 1/4 turn and try.

May 14, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door opener does not reverse after hitting obstruction


release the door from the opener and see if door moves freely the check proper torsion by moving door up to 3-4 ft if it stays in this area torsion is properly set if not call technician to adjust torsion
if door does not move freely all the way up and down check for binding track alighnment and roller condition. the adjust closing pressure.

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

2 Answers

Chamberlain Liftmaster Professional 1/2 HP


Okay...upon further inspection, my left spring has broken in two. Going to call around for some quotes to replace the spring. Thanks for the suggestions.

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