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Electric motor hums but does not open or close garage door

When energized motor hums but garage door does not ope

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  • Fernando Segovia Jun 01, 2014

    Pull on the disconnect rope. This will disconnect the garage door from the motor. All garage door openers have this option in case of electrial power failure. Open and close the door manually to check if the mechanical part of the garage door is ok. You can see if the pulleys and pulley channel are working freely. If not, clean the pulley channel and spray if with garage door lubercant that can be purchased at Walmart. Push the automatic door opener button and see if the door opener cable moves.

  • Fernando Segovia Jun 01, 2014

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  • Fernando Segovia Jun 01, 2014

    Sorry, I wasn't finished and accidently clicked on the "Add Comment". Here's the rest of the comment.....When you push the automatic door opener button, visually inspect your pulley wheels to see if they are turning. You may have to spray a cleaner like WD 40, wipe dry the pulley wheel and spray it with compressed air to dry it. Then spray a garage door lubercant on the pully wheel and all wheels. Manually, turn the pulley wheels to see if they turn. If they are jammed and will not turn, you will have to replace them. Also spray your garage door chain with the garage door lubercant. After you have done all of this, Pull the garage door rope back to reattach the garage door to the garage door opener chain. Good luck.

  • Fernando Segovia Aug 07, 2014

    another possibility is that your automatic door opener has a plastic gear that has striped teeth.

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If it just hums and not actually run. Then the trolley is jammed against one of the stop bolts.

Posted on May 07, 2014

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Theres 3 possibilities. #1, the door is disengaged from the motor. To fix, for a genie screwdrive, pull red cord toward the opener motor until it clicks in place. For most belt or chain drives, pull the red cord toward the door until theres a click. Release, try to manually lift door half way then hit the remote. If this is your problem, it will reconnect and youre good to go. #2, the capacitor is faulty. Symptoms of this are the motor makes a short buzzing sound then stops. You may also hear sizzling or see "smoke" (which is really vapor) coming out of the motor. Capacitors are cheap so if youre comfortable, take the lid off the opener you will see capacitor mounted to the top. Match the #'s off the old one and find a new one.UNPLUG THE UNIT BEFORE REMOVING THE LID! If you are not sure what a capacitor is, this task is above your skillset. #3 you have a gear stripped. For genie screw drives its a coupler which is internal call genie for instructions and parts. If its a belt or chain drive, the gear/sprocket assembly is stripped and you should consult the mfg for parts and instructions. Its definately NOT a circuit or logic board problem.

Posted on Jul 09, 2014

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Posted on Jan 02, 2017

lobsterman72
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SOURCE: Sears Craftsman 1/2hp Garage Door Opener

Thats one of the symptoms of a lightning strike or a power surge. Without actually being there I would suggest replacing the back-board. But as with lightning strikes and power surges sometimes other electronic components could have been damaged as well.

Posted on Jul 01, 2008

  • 3197 Answers

SOURCE: My garage door opener won't close the garage door.

Most likely your door sensors have been bumped and are not aligned properly. Make sure they are pointed at one another and the small light on each one is lit and not blinking.

Posted on Apr 30, 2009

rulds2008
  • 3866 Answers

SOURCE: Problem with Sears Garage Door Opener

The motors is cought on something check the motor if it moves inches it will move a yard the question is the motor is it getting power? if so is it stuck on its own drive chain? Check these things you be glad you did.

Posted on May 25, 2009

  • 3197 Answers

SOURCE: 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 41A2817 and is available from Sears or any good door opener service company. It comes with instructions.

Posted on Jun 07, 2009

  • 3197 Answers

SOURCE: My Liftmaster GDO makes a clicking sound and won't open

See if the trolley is jammed against the bolt just in front of the motor unit. If so remove the bolt and then run the opener until the door is closed. While the door is closed locate the 'up limit' control which is on the side of the motor unit. Turn this control 2 complete turns in the opposite direction of the arrow printed on the cover. Remember to replace the bolt.

Posted on Jan 09, 2010

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