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

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Liftmaster 1265 - Motor hums but nothing else happens.

The track dosen't move.

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  • downundertek Jan 06, 2009

    I have a LiftMaster Model #1060-1 (1/2 HP) chain drive garage door opener that has the same problem. I opened the door part way up and I stopped it with the remote so I could close it before it reached full open. When I pushed the button again to close it it started going up again so I stopped it with the remote it stopped and the motor just started humming with no movement of the door. I had to unplug the power to it and release the trolley so I could close it manually. I am a master auto mechanic, so I checked it out the nylon gears were not stripped out. All teeth are good. I remove the motor and found it was tight to turn. I hooked it up to a power cord  and it still only hums when I apply power to the motor. I sprayed it with penetrating oil at the two bearings on the shaft of the motor and it turns more freely now but still only hums. I talked to my door opener man today to see if he had a new motor for it. He told me he has never replaced a defective motor on a door opener in over 30 years. I am going to take the motor for him to check, this Wednesday, 1-7-09. It might be the motor starter capacitor that is blown out. It might need to have the capacitor to give the motor a "Kick Start" to get it turning when it initially starts the motor turning. If you think I am going in the right direction please let me know. Thanks, John

  • downundertek May 11, 2010

    I tried the capacitor. It was not the problem. The circuit board was burned out. My GDO tech showed me the burnt spot in it (brown spot in the green circuit board). It was very evident that was the problem. I bought a new GDO that has the safety sensors at the bottom of the door that I like much better. Thanks for your help.



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I have had same problem. Replacing the motor start capacitor fixed it. Capacitors can go bad in an instant when they get old, particularly if they are perturbed while servicing other parts.

Posted on Jan 19, 2009

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The Capacitor is a 53-64 MFD 220 VAC. A bad capacitor will cause what you are experiencing.

Posted on Jan 06, 2009


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