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

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Garage door doesn't close properly

The garage door starts to close but then backs off as if the sensor is tripped. This consistently happens every time the door closes at a certain point (approximately 1 foot from the bottom and no there is nothing protruding from the door that is tripping the sensor). This inconsistently happens at various other points along the path.

the sensors are clean. I cannot tell if they are pointed directly at one another, but they are very firmly in place. This problem just started happening recently. Opener is about 9 years old now. My Sears Craftsman door stops right above the sensors and reverses back up every time I try to close it. It will not go all the way down even when the button is held down to by-pass the sensors. We've tried adjustng the pressure and the travel distance. The door slides smoothly on the track when opened and closed manually. Before this started it was going down all the way and then reversing. We could stop it in place by pushing the remote button again. Any other ideas for us to try?

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  • 31 Answers

I too am having the same issue. I replaced my console control because my garage door was unresponsive and that fixed that issue. Now I have to hold the button down sometimes double tapping the button and then holding it down to close it. I believe the first place to check is the limit switch. Look at your owners manual or get online help in adjusting that. If that does not work you may need a new logic board. As far as the sensors go, one is a sender and one is a receiver. They have indicator lights and when they are aligned they light up. Check those first as a logic board is usually alot more expensive. Check ebay though as I did as there are plenty of good used parts available. Just get the numbers off of your logic board so you know what to look for as far as model number and date of manufacture. Good Luck.

Posted on May 16, 2009

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