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

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I have a sears craftsman door opener. I replaced the logic board after a neighborhood lightening strike. Another recent strike has effected the new board. The door went up but won't come down. The light comes on and the motor starts then stops right away. I tested the sensors on the other door and theyare fine. Is there a reset code for the door?

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There isn't a reset code. It sounds like you may be having a door sensor problem. Is the small light on each sensor lit and not blinking ever so slightly? Does your door start down and then reverse to the open position? Is the door stuck in the open position? Check to make sure the trolley isn't jammed against the bolt just in front of the motor unit. If it is then remove the bolt and run the door until closes. Then adjust the up limit on the side of the motor unit. Turn it in the opposite direction of the arrow printed on the cover about 3 turns. Be sure to then replace the bolt.

Posted on Jun 04, 2009

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Replaced logic board on sears garage door opener, cannot turn light on from wall control


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