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

1 Answer

Light flashing and control won't work

We had a power outage, now the twin lights are flashing and my wall unit will not operate the garage door, either up or down.

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  • sparkydoodle Jun 21, 2008

    I have the same issue - the lights flash but the door won't open.
    HElp


  • campwags Jun 23, 2008

    After power outage, GDO only makes a click, click... and nothing happens.
    The led lights will flash 5-6 times and nothing. Lights on side of unit will not come on even when light button is pushed.
    Is this a capacitor problem?


  • mikeburgdorf Aug 01, 2008

    The light is rapidling flashing on my garage door wall unit but everything is working fine. It started earlier this week but I cannot find anything wrong. Any ideas on why the flashing would start?



    Mike

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  • 91 Answers

Your opener has been hit by lightning or power surge.
If it's not too old you can replace the 'back board' (the computer board on the back of the opener.) Also If the opener has safety sensors one or both of them may be burnt out too, and if it was really bad then the rpm sensor will go too. So you could be looking at paying half the cost to repair or just get a new opener. Up to you, and get a surge protector. Lift master has a good line of products and makes thier own surge protectors for thier products.

Posted on Jun 27, 2008

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1 Answer

Push buttons on remotes won't raise/close lift master mod 81lm


Check to see if the light in the wall control is flashing. If it is press and hold the lock button for 3 seconds.

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Actually it sounds like the vacation lock has been enabled. To turn it off press and hold the lock button for 2 seconds and test it out. If this is not it then you will need to replace the logic board and get a surge protector as well. Thanks BB

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