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

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I have a 1/2 hp craftsman opener, it has the premium wall console, keyless entry and two remotes, chain driven. I installed it about a year and a half ago, it's worked fine since. Just recently, it would not work, and I noticed there was no power to it. I checked the plug-in, made sure the unit had electricity, and bumped the head, and the lights came on and the green light on the wall console. It worked fine for several days, and quit again. For the last month, when it quit, if I bumped the head hard, the lights would come on, and it would have power and work. Any ideas?

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I would pull the logic board and check for loose or missing connections/traces on the printed circuit board. You can also foll the 110v line and make sure it has not worked loose.

Posted on Nov 09, 2009

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Posted on Jan 02, 2017

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