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

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My Liftmaster 1/2 HP garage door opener is not working at all. There is power at the outlet. I have 3 openers and only one is having a proble.

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You need to find out where you are losing the power. I would pull the logic board and look for burnt or missing traces on the printed circuit board and also look closely around the small transformer on the board for loose connections.

Posted on Jul 30, 2009

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try leaving bulbs out a bad socket can cause range issues. also a bad ground on the wall/ceiling outlet can also cause problems.

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There is no fuse or circuit breaker in the opener. You should pull the logic board and check for loose or missing traces on the printed circuit especially around the small transformer.

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http://www.aaadooropeners.com/?gclid=CLH3wt628p8CFVZS2goduwSLYQ

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Check to make sure your door sensors are properly aligned. They each have a small light and both lights will be on if they are aligned.

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