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

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I have a steel line roller garage door 14' wide which keeps sticking when closing and then opening back up. It appears to be out of alignment at about 18'' down as though the tension is out. It does not always do this but occasionally.

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Sell the **** as they are not worth the worry. I threw mine away and bought a B&D.

Posted on Apr 30, 2011

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I think you need to call a commercial door company for this one.

Posted on Oct 08, 2010

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Hi,I have a Digidoor 3 motor & it open & closes as normal but after the garage door is closed it drops the chain about 15cm then slums it back into the track. Can anyone help me out please?


will need a digi door or roller door mechanic in your area
head office ? use contact us
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My garage door lurches while it is opening


If the alignment is true and rollers move with ease, you should not have any jerking motion. Unlock the door catch from the pulley line of the motor. The door should be FREE to lift by hand. With the door Free of the motor/line-pulley, lift by hand. Do so a number of times and see if it binds or is free to move up and down easily. If it binds, the alignment is off and needs adjustment. If it moves quite well, then the problem can be the door sensors. These are the two face to face sensing devices at the bottom of the metal guides on both sides. These sensors need to be horizontal and fixed to allow Line Of Site to operate correctly. Check both Alignments, Rails and Sensors.

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Garage door opens only 2/3 and won't stay closed


One could be that the tracks are misaligned and its slowly pinching the roller wheels. Sometimes that happens when they get bumped hard. or if the hardware was never really tightened it can slowly work its way out of alignment. THe roller wheels should always have wiggle room.

Sep 20, 2012 | Home Security

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Garage door will not close when using the remote or garage door button. it will open, however. it can be forced closed by holding the garage door down. i have had this problem before . i have...


Check to see if your child/animal security beam is working correctly. It is an "Electric Eye" mounted about 12 in off of the floor on two mounting points and one side shoots an infra red beam across to a receiver. These points must be reasonably aligned to flash a beam (cannot see) from one point to another. This beam keeps the door open if it is interrupted . If it is not aligned, then the door opener sees a problem and will not close the door electrically. You must aligned the beam by bending the transmitter or receiver untill you can close the door by the remote. Also check to see if something placed in the garage is not blocking the beam first.

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Steel-line garage door opener. I have a steel-line panel lift garage door opener, when I try to open or close the door the motor spins for a sec very slowly and then does nothing. Is there anything I need...


It sounds like either the safety sensors are not aligned, or the rpm sensor needs replaced. Also whether you replace or repair get a surge protector 900 joules or higher on this unit. You can get a reasonable opener with one remote for 138.00 at most lowes. Thanks BB

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

2 Answers

Lift-master 2000SDR remotes will open but not close garage door. Same problem with all clickers and even those programmed into the cars. What could this be and better yet, how do I fix it?


Lift-Master 2000SDR opener. Opener generally works fine from the remotes. However, first time in the morning in cooler weather, it will start to close and the reverse and the lights blink. I have checked the senors - appear to be aligned properly. I have lubed the gear and used garage door spray on the rollers and hinges at the proper places. To close the door when this happens, I have to hold the wall button.

Nov 25, 2009 | Sears Craftsman LiftMaster Chamberlain...

3 Answers

My garage door opener reaches the laser beam and goes back up


Hi,
Have checked to make shur nothing on the Door is sticking out into the path of the beam. Most door I know of are set so that anythig breaking the beam, while the door is in motion, will send it back up. the beam dosnt stop being looked at till the doors been all the way closed for a second or two.

You might want to look at the part of the door that reaches the laser just before it goes back up, it dosent take much to break the beam, a piece of string could do it.

Hope this Helps
Gem

Jul 02, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

LiftMaster Garage Door Opener


IF YOU ARE TALKING ABOUT THE ROLLER ON THE DOOR - THE TRACK IS TOO WIDE ALLOWING THE ROLLER TO COME OUT. USE THE CLAW END OF A HAMMER TAP THE TRACK MOUNTING BRACKET AT THE WALL TO MOVE THE TRACK IN CLOSER TO THE EDGE OF THE DOOR

Aug 28, 2008 | Sears Craftsman LiftMaster Chamberlain...

3 Answers

How to align the sensor on garage doors


Ok quick question. How old is your opener? There are two little blocks on each side of the door. are they both green? or is one amber and the other green? When I go out to a customers house with this problem the first thing I do is close the door so is a little darker so you can see the lights. Line them up then I good each one a good little tap with my finger and see if ether light will flicker. If so then there too loose or not lined up as well. One side will always be lite (unless there is no power or a cut wire)

Dec 06, 2007 | Sears Craftsman LiftMaster Chamberlain...

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