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

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SEARS/CRAFTSMAN 53628SRT Not Closing properly

Due to a recent storm, my Door opener stopped working. I replaced the logic board with a new one, and now have this problem: Door opens with remotes or wall button. Door will not close with either remote. Light blinks for 5 seconds with no door function. Door closes with wall control only if held continuously until closed. If button is released, door opens back and light flashes 5 seconds. NOTE: The green LED next to the SRT button flashes 2 times in continuous cycles. I assume this is something in the door reverse sensors. I have checked both and tried the door with sensors connected and disconnected with same results. Due to the logic board change, is there something I am not doing to reset this? or are the sensors bad?

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Sounds like the safety door sensors are at fault,also did you reprogram the remotes by pressing the smart button on the logic board,when the safety sensors are bad the door will reverse to open state.you can pully the rip cord to manualy close the door untill you solve the problem.

Posted on Oct 24, 2007

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I did fix the problem with replacing the safety sensors.

Posted on Oct 25, 2007

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