Recent content by dmillik

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    Liftmaster LA400 problem

    And if it doesn't work properly with the receiver board off, then it is probably the main board. Don' you agree? Thanks for your help. Don
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    Liftmaster LA400 problem

    In clarifying, one push of the button only opens or shuts the gate depending upon its position. You have to re-seat the board to get it to go back to its original position. I believe we have tried it with the receiver card pulled, but will double check. The inside of the control box is very...
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    Liftmaster LA400 problem

    Thanks for your quick response. "I've never experienced this problem. But, from your description, I'm led to agree that the receiver board is causing a problem. When you remove/reinsert the board, does the operator respond to the remote? Yes. When you say it opens and closes after pressing the...
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    Liftmaster LA400 problem

    I have a Liftmaster LA400 that hasn't worked in a while. I replaced the batteries yesterday and the only way I can get it to work is to pull the small receiver board and re-seat it. I then push the SBC button and it will close/open. I cannot get it to open/close until I pull the board again and...
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