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

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We have 2 sensors. 1 has a green light and the other has no light

We have 2 sensors. 1 has a green light and the other one doesn't have a light. The garage door would go down 1/4 of the way but vome back up. Then the light connected to it blinks 10 times. It'll only go all the way down if you hold it down until it shuts.

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  • jason May 11, 2010

    have you tried readjusting the tension adjustment ?

    or have you looked to see what might be causing it to have strain ?

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Your safety eyes are out of ajustment. Make sure that the eyes are pointing directly at each other. A light will come on on each eye when they are properly aligned. The only other thing that could be wrong is that one of the safety eyes could be bad, and the only thing you can do is replace the eyes. 99% of the time the problem is an alignment issue. By holding down the wall button, you are overriding the safety eyes.

Posted on Mar 06, 2009

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Posted on Jan 02, 2017

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