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

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My Craftsman Garage Door opener stopped working.

We recently had a storm and lightning struck somewhere nearby. When you push the wall opener or the remotes there is no response. What is the most common parts failure in this situation? The board or the motor starting capacitor?

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The most common part to go bad in these openers when lighting hits them is the logic board. Look for a white and black label that has your model number on it. Go to http://www.usdoorcontrol.com/manufacturers-other.html and find the newest revision board that is made. Repairing this problem is easy.

Posted on Jul 15, 2009

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I would pull the logic board and check for burnt or missing traces on the printed circuit. Garage door openers hate electrical storms. I really doubt it got to your start capacitor.

Jun 04, 2010 | Sears Craftsman LiftMaster Chamberlain...

3 Answers

No reponse when using the remote, the wall control works fine.


The remotes use a receiver to actuate the door and the wall control does not. It sounds like your logic board is bad. Maybe a lightning storm recently? Try removing the board and look for burnt or missing traces on the printed circuit.

Sep 11, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Same problem same day


Unfortunately there isn't a reset switch but I would pull the logic board and look for burnt or missing traces on the printed circuit board. Electronics do not like lightning.

Jul 17, 2009 | Sears Craftsman LiftMaster Chamberlain...

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Craftsman Garage Door Opener won't work after storm


Check to see if the trolley (the part that slides back and forth on the rail and is connected to the door) is jammed against the bolt just in front of the motor unit. If so, remove the bolt and run the door until it is closed. On the side of the motor unit there is an 'up limit' control. Turn this 3 turns in the opposite direction of the arrow printed on the cover. Be sure to replace the bolt.

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If you had an lightning storm you most likely have a bad logic board. That is not a reset button you are pressing.

Jun 05, 2009 | Sears Craftsman LiftMaster Chamberlain...

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Both openers stopped working at the same time but they are both plugged in to an outlet that still has power. The lights are out on the opener wall switches. Wife thought she smelled electrical smoke when...


what openers? Sears/liftmaster of last 2 years have no reset. Sure power to outlet? Try a lamp. Did a gfi trip. Did wife run both doors to overheat them. they should cool off in 15 minutes. Do you have a surge protector. Did it go bad. Some kill power when they get cooked. Did you have a lightning storm. Culd have cooked logic boards.

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