Question about liftmaster Chamberlain Garage Door Opener Transmitter 300MC

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I found a garage door opener,called DO IT door opener mod # D1-99 made for HWI by Alliance mfg co. contacts were dirty cleaned them and low and behole it works. if i leave it plugged in it humms,why does it keep humming? does anyone know where I may find a remote for it.thank you

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SORRY BUT THE GUY WHO GOT RID OF IT HAD THE RIGHT IDEA.
I DOUBT YOU CAN FIND A REMOTE AND IF IT HUMMS IT IS A POTENTIAL FIRE HAZARD.
SORRY I CAN'T GIVE YOU GOOD NEWS

Posted on May 26, 2010

  • eddie_brown Sep 13, 2010

    I tapped the condenser and it stopped humming,and found a remote works great like new

  • Deb Hiatt
    Deb Hiatt Sep 09, 2017

    Hi Eddie, where did you find a remote and wha brand is it? I'm in the same boat, have a different car with no remote. Can only find ones that program from the smart button or dip switches. Thanks for your time.

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