Question about Building Materials

2 Answers

Electric motor hums but does not open or close garage door

When energized motor hums but garage door does not ope

Posted by on

  • 2 more comments 
  • 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

    Add a Comment

  • 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.



2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.

    New Friend:

    An expert that has 1 follower.


    An expert who has answered 20 questions.

  • Expert
  • 130 Answers

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

Posted on May 07, 2014

  • Level 1:

    An expert who has achieved level 1.


    An expert who has answered 20 questions.


    An expert that hasĀ over 10 points.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 25 Answers

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


6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

  • 91 Answers

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

  • 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

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

My Lift Master garage door will not close. It makes the closing noise but the door does not slide down. Whcan I talk to to fix this?

Sounds like you have a chain drive garage door opener and you hear a humming sound when you push the wall console. The motor is running but the chain does not move. You need to replace the gear & sprocket assembly.

Jul 06, 2014 | liftmaster Lift Master 377LM 376LM 315 MHz...

1 Answer

Motor hums but does not open garage door

Either the opener trolley is disengaged or you have a broken gear/sprocket assy.

Mar 26, 2014 | Sears LiftMaster Building Materials

1 Answer

Liftmaster Garage Door Opener, Model 1250 SN 16433A0004A, back lite controller does not work. I pushed the green learn button on the door motor and then added a 4 digit code on the controller and pushed...

I don't know what a "back lite controller" is but I think you are talking about a wireless keypad. If you are sure the battery in the keypad is good then it has just failed.

Jun 30, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

My garage door hmmmms but will not open or close. How can I fix this?

Could be the start capacitor is bad. When this happens the motor will not start but just hums for a few seconds. Could also be that the door is open and jammed against the bolt just in front of the motor unit. Is the door open or closed?

Jul 02, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

My garage door will not open. The motor hums when I press the garage door button but nothing happens. If I remove the chain, the motor runs as normal and the gear rotates as normal. If I put the chain...

Check to ensure one or more of your garage door springs isn't broken (they last about 10 years). Most doors, especially double wides, have two or more springs. If one breaks, as they ultimately will, the motor won't have enough mechanical assistance from the spring to lift the door; however, gravity and one good spring will certainly close it.

Jan 04, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage Door opened but will not close. I opened

I think the trolley has jammed against the bolt just in front of the motor unit. Remove the bolt and then run the door until it is closed. With the door closed locate the 'up limit' control on the side of the motor unit. Turn this 2 turns in the opposite direction of the arrow printed on the cover. Replace the bolt.

Sep 01, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door won't open or close

is trolley jammed against stop bolt. take out to release tension on chain. may be bad circuit board. how old is unit.

Jan 04, 2009 | Sears Craftsman LiftMaster Chamberlain...

Not finding what you are looking for?
Building Materials Logo

Related Topics:

249 people viewed this question

Ask a Question

Usually answered in minutes!

Top Building Materials Experts

Terry Smith

Level 1 Expert

59 Answers

Tom Chichester

Level 3 Expert

36311 Answers

ray gallant

Level 3 Expert

46218 Answers

Are you a Building Material Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides