Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+
I also think it may be related to the temperature because it worked again in the early morning when it was cooler. I will try to adjust the spring tension also to see if that helps.
You need to remove the cover and look at the drive gear. It is white nylon and is just in front of the motor. May be stripped. Also take a close look at the door springs. One could be broken.
Posted on Jun 22, 2009
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Posted on Jan 02, 2017
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