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Why does my garage door opener creep back down about 12 inches after fully opening

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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SOURCE: After opening, my automatic garage door creeps back down a bit

There is a sensitivity switch for both directions, open and close. If you access the garage door opener in the ceiling, you will see two adjustment screws for calibrating these. I would highly recommend following the instructions in your manual, as these are life safety adjustments! Your sensitivity for closing the door is adjusted to the positive. You just need to back it off a little. Place a 2x4 on the floor of the garage where the door comes down. and when the door hits the 2x4, it should automatically come back up. If not, you adjusted it too far. Hope this helps. and remember, check the manual for your specific adjustment procedures.

Posted on Mar 13, 2009

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SOURCE: I have a Sears HBW0777

I have the same opener. Last night I experienced a similar problem. I assumed it was the usual problem I have when it is cold out (near 0): added resistance for the bracket sliding along the bar. But upon further investigation, it turned out to be worn gears inside the unit. they ar made of plastic or nylon and they had worn down so much that they are mostly stripped of their teeth. the added resistance from the cold and dirty bar has caused them to fail once and for all.

If you unscrew the housing you can easily see the condition of your gears. But perhaps by now you have replaced your opener?

Good Luck.

Posted on Jan 02, 2011

  • 170 Answers

SOURCE: I have new Genie 9-12 remote for garage door

The code for the opener is on a dip switch set under the light bulb lens on the opener unit. Remove the lens and the switch set is usually located on the left as you look at it. It's either a 9 or 12 switch set. Match the numbered switches on both the remote and the receiver, and it should work! Oh, and make sure the battery is fresh.

Posted on Feb 12, 2011

  • 6 Answers

SOURCE: Garage door opener light flashes after door shuts

Check the electronic eyes that sense when something is in the path of the door, sometimes they can get knocked out of place, something could be blocking them, or there could be a build up of cobwebs in the opening for the electronic eye. Typically when the light flashes it is indicating that somehow the infared beam is obstructed

Posted on Feb 08, 2012

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1 Answer

My door will open and close completely, then the next time it only begins to close ,goes about 12 inches then reverses..what is wrong with it


Try turning your down force up alittle higher if your door is only wanting to go down a foot or so. If your light bulbs are flashing, you then have a problem with the safety eyes.

Dec 26, 2014 | Building Materials

1 Answer

Chamberlin garage door opens to top limit bounces back to return down about 6 inches and then returns to open limit. What adjustments are neccessary?


The limit switch of both the sides are not reached. The drive must be realigned to work till the door closes fully so as to touch the limit swittch to switch off.
Similarily the open door must go to the extreme point to cut off with the activation of the limit switch.

Sep 11, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I just installed a sears craftsman 1/2 hp garage door opener. when i close the garage door with the remote the chain track bends up just about 12 inches before it closes all the way, and this only happens...


What is wrong is you need to adjust the limit on the door when it comes up. What it is doing is coming to far back on the track. You need to push the back limit forward away from the motor so the door does not come back and drop down on the inside of the garage. The opener is trying to push the door up hill to get it to close that is why you are getting the bend in the track.


Good Luck

Oct 19, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door only opens 4 inches then reverses and stops


you need to replace gear when the door is fully closed. then do your tweaking.

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

1 Answer

Craftsman garage door does not open all the way stops @12 inches


You most likely have a broken door spring. Release the door from the opener and try lifting it by hand. Look above the door for the springs.

Mar 21, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

After opening, my automatic garage door creeps back down a bit


There is a sensitivity switch for both directions, open and close. If you access the garage door opener in the ceiling, you will see two adjustment screws for calibrating these. I would highly recommend following the instructions in your manual, as these are life safety adjustments! Your sensitivity for closing the door is adjusted to the positive. You just need to back it off a little. Place a 2x4 on the floor of the garage where the door comes down. and when the door hits the 2x4, it should automatically come back up. If not, you adjusted it too far. Hope this helps. and remember, check the manual for your specific adjustment procedures.

Mar 13, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door opener chain out of sync with door


There are two white screws on the sides that adjust the limits. Adjust the "down" screw less. You should have to turn the screw 4 full turns for eight inches. After you make this adjustment, test it without the door being hooked up to prevent damage to the door or opener if it tries to close too far.

Feb 27, 2009 | liftmaster Chamberlain Garage Door Opener...

2 Answers

Sears opener wont open or close more than 12 inches


You may have put the chain back on out of "sync" with in internal up and down stops. You may have to take the chain off the motor sprocket and run the motor to make sure it is stopped in the down position ( watch the rotation of the sprocket to determine up or down position) When the motor is stopped in the down position put the chain back on with the chain Carriage in the down position. Then you can fine tune the up and down stop positions with the adjustment screws on the side.

Feb 05, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Craftsman 1/2 hp opener


I am sure that your lift gears have stripped and need to be replaced.

Sep 09, 2008 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage Door Opener Intermittingly Reversing


try adjusted the sensor controls on the sode of the unit other wise replace the logic board
http://www.chamberlain-garage-door-openers.com/circuitboardcompatibilitychart.htm

Dec 24, 2007 | Sears Craftsman LiftMaster Chamberlain...

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