Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+ "motor hums not open" Questions

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m otor hums but door does not open motor hums but garage door does not open If the motor is running and the chain or belt isn't moving, you have a broken gear in the opener.

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Question about Sears LiftMaster Building Materials

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motor hums but door will not open garage door motor hums but door will not open Remove the cover and check the drive gear. It is white nylon and is just in front of the motor. The part number is ...

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Question about Sears LiftMaster Building Materials

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motor hums but does not open garage door motor hums when energized but garage door does not open Either the opener trolley is disengaged or you have a broken gear/sprocket assy.

Question about Sears LiftMaster Building Materials

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Opener will hum but not engage the drive train. If the humming you hear is the motor running you need to remove the cover and check the drive gear. It is a white nylon gear just in front of the motor.

Question about Sears LiftMaster Building Materials

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hums but does not open. It had been working fine until a day ago and now I hear the motor himming but nothing happens Sounds like you have a bad start capacitor. It sits next to the motor and is about

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...door buzzes for a second then stops. Any Ideas. If the door is not stuck in the open position and just hums you could have a bad start capacitor. It is alongside the motor and has 4 wires going to

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motor is over heated shut down unplug 30 min Does it simply click then hum? or does it sound like something's moving inside? if you can hear movement inside I'd guess stripped gears. if it just hums I

Question about Sears LiftMaster Building Materials

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motor hums but nothing happens I have checked the tension on the chain and it is not too tight. The door was sticking with extreme cold and my wife said that she was helping the door up by lifting it ...

Question about Sears LiftMaster Building Materials

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...motor hums but chain and door does not move. Any ideas? Thanks If the motor is running but the chain isn't moving you have a stripped drive gear. Remove the cover from the motor unit and check. It ...

Question about Sears LiftMaster Building Materials

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Motor hums but door doesn't move. If I disconnect door and give chain a horizontal poke, it will move. When I reconnect door it returns to humming, without movement. Remove the cover from the motor ...

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