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    peakdream's Avatar
    peakdream Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Feb 18, 2012, 10:08 AM
    Garage door
    I have a Liftmaster garage door system. This morning the door only opened to 85 percent. I closed the door using the wall switch and the door closed completely. I then tried to reopen and the motor hums but the door won't open. The motor continues its opening sound but the door does not go up.

    I then detached the garge door and opened manually. Once fully opened I activated the garage door opener using the wall switch and the motor hummed and the chaines did not move? I don't know what to do next. What could the problem be?
    hkstroud's Avatar
    hkstroud Posts: 11,929, Reputation: 899
    Home Improvement & Construction Expert
    		  
    #2

    Feb 18, 2012, 05:09 PM
    Chain is off the drive sprocket or the gears inside the motor are shot.
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