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

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Garage door opener quit working

I have a Chamberlain 1/2 hp hd400d with a 41aco50-2 circuit board. I took cover off and it worked for a few days. Seems like the board has a loose wire or conector. I can flex the back side of the opener and power will come on and off. As soon as the garage door starts opening with or without door hooked up it stops. All signs point to the board itself. Is there any quick fix or warranty on this. Purchased in late 2006.

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The warranty is over but you can purchase a replacement remote. Take the one that is faulty to any Sears store and they will assist you.

Posted on Mar 11, 2009

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