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

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Garage door opener-Sears

Garage door won't open fully and then closes

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I have a craftsman garage door opener. I have one spring that is broken an the other is not. I can not open the garage door. I need help to open the door until I can get a repairman out on Monday.

Posted on Jul 10, 2010

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  • 112 Answers

You probably have broken springs

Posted on Jan 18, 2009

  • 2 more comments 
  • Carmen Sandiego
    Carmen Sandiego Dec 30, 2013

    My garage door hasn't been working the last little while, so I decided to check out http://www.walpoledoors.com, and they came out right away and fixed the problem, and now it works great.

  • Gene Haynes Jan 17, 2014

    Avery and Carmen are full of BS

  • Gene Haynes Mar 20, 2014

    carmen is full of bs

  • John Howard May 06, 2014

    I had a problem with my garage door opener, I tried everything to fix it. I called a garage door repair guy and he told me that I had a short in the opener. Once I got that fixed it worked fine after that. co.com/About-Us/' http://www.lakecountydoorco.com/About-Us...

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6 Suggested Answers

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SOURCE: Sears Craftsman Garage door opener does not open or close

The drive gear is most likely stripped. It is a white nylon gear just in front of the motor. The parts number is 41A2817 and is available from Sears or any good door opener service company. It comes with instructions.

Posted on Jun 03, 2009

  • 244 Answers

SOURCE: garage door wont open,moto running ,chain not moving

call service man back and try adjusting up force

Posted on Jan 15, 2009

  • 112 Answers

SOURCE: Key pad won't open garage door

You probably have an eletrical device that is messing with frequency. Make sure that everything is off inside garage.

Posted on Jan 19, 2009

rulds2008
  • 3866 Answers

SOURCE: Problem with Sears Garage Door Opener

The motors is cought on something check the motor if it moves inches it will move a yard the question is the motor is it getting power? if so is it stuck on its own drive chain? Check these things you be glad you did.

Posted on May 25, 2009

  • 3197 Answers

SOURCE: Garage door chain is sagging

If the chain is adjusted properly the chain will sag slightly on one side when the door is closed and on the other side when it is open. It should not sag enough that it is dragging on the T-rail. You can adjust it at the trolley. If you over tighten it you will hear a clicking sound when the opener opens or closes.

Posted on Jul 28, 2009

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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My sears Craftsman 1/2 HP garage opener starts and quickly stops with a ****. sometimes only moving the door a inch or so. Lights on opener flash once, somethings power completely seems to go off... power...


Make sure all the connections are tight on the rear of the motor housing. The terminals where all those white wires go must be tight. Also make sure the plug into the wall is snug and not sloppy.

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Remove the cover and check the drive gear. It is a white nylon gear just in front of the motor. It will be obvious if it is bad. Tell me - if it won't open how do you know it won't close?

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The motor has a thermal protector that will cause the motor to quit when it gets hot. If you let it cool off it will automatically reset and should work again.

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It sounds like the gear and sprocket assembly has gone bad. This would cause the symptoms you have.

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The motors is cought on something check the motor if it moves inches it will move a yard the question is the motor is it getting power? if so is it stuck on its own drive chain? Check these things you be glad you did.

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try adjusted the sensor controls on the sode of the unit other wise replace the logic board
http://www.chamberlain-garage-door-openers.com/circuitboardcompatibilitychart.htm

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