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

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I have a sears craftmen garage door and the control switch on the wall light keeps flashing and I need to know how to get it toa solid light and when I press the button to close the door it goes few inches, goes back up and the overhead light flashes and can't get the door to go down by itself any suggestions on fixing these problems?

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  • George Jun 16, 2009

    Thank for the quick reply it work and resolved my problem.

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When the door reverses to the open position and the main light flashes 10 times it is a door sensor problem. Usually the sensors get bumped and need to be tweaked so that they are once again pointed at one another. Each sensor has a small light that must be on for them to work. The light on one sensor stays lit all the time and the other sensor light is only on when they are pointed at one another.

The flashing light in your wall control is a separate problem. One of the buttons on the wall control has an icon of a lock. Press and hold it for 3 seconds and release. It should stop flashing.

Posted on Jun 15, 2009

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