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

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Liftmaster Professional Series 9 Position DIp switch

There appeared to be a spark and then a small stream of smoke when I was trying to program a new remote. Now it does not work at all from any of the remotes.

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It sounds like you have a logic board problem. I would pull the board and check for burnt or missing traces on the printed circuit board. If this fails it would be a good time to upgrade your opener due to the cost of the logic board.

Posted on Sep 08, 2009

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Just guessing here. If it's a 1996 model, there will be some DIP switches in both the remote and the receiver on the garage ceiling. They have to be set to the same positions. If you don't know what a DIP switch is, Google it. You'll see pictures and then you'll know what to look for.

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I would go with a chamberlain clicker on this issue. These remote are phased out and the 9 dips don't work well with them. Thanks BB

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