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

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My garage door will only open about 12 inches and then stops. I have stanley electric door with a craftsman 1/2 electric starter

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Check the door springs. Sounds like one could be broken. You might also remove the cover to the opener and check the drive gear. It could be stripped.

Posted on Nov 19, 2009

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Posted on Jan 02, 2017

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My 1/2 hp sears craftsman garage door opener bought in 1992 has stopped working, The motor hums when the remote or wall button is pressed but the door will not move at all. Please help


Most common cause of the problem you describe is a bad start capacitor. Remove the cover from the motor unit. The capacitor is about 5 inches long and 2 inches in diameter.

Dec 02, 2010 | Sears Craftsman LiftMaster Chamberlain...

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Remove the cover and check the drive gear. It is white nylon and is just in front of the motor. It may be stripped. Take a close look at those door springs. They can sometime appear to be okay when one is broken.

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

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You most likely have a broken door spring. Release the door from the opener and try lifting it by hand. Look above the door for the springs.

Mar 21, 2009 | Sears Craftsman LiftMaster Chamberlain...

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is bulb on motor flashing 10 times. then you have electric eye problem. otherwise, sounds like you need to increase down force a hair. adjustement is on logic board, right knob.

Jan 06, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

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I would try jumping a wire across the white & red terminal to see if your safety sensors are working Properly! If your door opens you have a loose connection or faulty sensors.

Oct 22, 2008 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

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I am sure that your lift gears have stripped and need to be replaced.

Sep 09, 2008 | Sears Craftsman LiftMaster Chamberlain...

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