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

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Is there a garage door opener that you can buy that lifts two doors or do you have to buy two seperate openers?

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Some people connect 2 doors to one opener but it is a very dangerous situation. The built in safeties to protect children and pets will no longer work and you could mash your car.

Posted on Jul 08, 2010

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1 Answer

Lift master garage door opener won't open door motor runs no access to inside of garage. Suggestions?


manual release has been triggered

just lift up the garage door manually

will take effort

if motor drive engages as you lift and you cant get the door up any more
try the remote


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Apr 30, 2017 | Building Materials

2 Answers

Cannot open my garage door manually after I disengage it from the garage door opener (chain drive)


They are not light weight but there is no reason if the motor can raise it, then you cannot raise it by hand.

Feb 05, 2016 | liftmaster chamberlain 1/2 hp chain drive...

6 Answers

How to open the door if no electricity


Almost all garage door openers have a switch mechanism that will allow you to open the door manually. It is usually a pull cord on the motor or track. Pulling it down usually deactivates automatic mode. Just pull it up into position when the electricity comes back on.


Garage Door Repair in Jacksonville FL American Garage Doors LLC

Mar 17, 2015 | Building Materials

1 Answer

My fixed garage door opener opens fine, but only closes if it is held down. My remote garage door openers do not work at all. I replaced the sensors and they appear to work fine. I tried to reprogram the...


If the sensor is working right, that leaves the downward force sensor tripping. First check for track obstrucions by manually moving the door with the lift disengaged. If door works without excessive force, then increase the force sensor of the lift a bit.

Jun 12, 2010 | Sears Craftsman LiftMaster Chamberlain...

3 Answers

My liftmaster garage door only opens 8 inches and then stops


It sounds like the opener is stopping because the weight of the door is tripping the lift sensor on the opener. There are two screws on the side of the opener to adjust the lift and close pressure. Find the lift pressure screw and ajust it higher to see if that remedies the problem.
Also, because you said the door will not stay open at the top when you open it manually, I think your springs are not adjusted correctly. They should hold the door open in the up position when not connected to the door opener. That may be the reason the opener lift pressure is kicking it out.
If you have to adjust the springs, be careful that you know what you are doing. There is a lot of potential for getting hurt if you don't know the proper proceedure.
Good luck.

Jan 17, 2010 | liftmaster Chamberlain Garage Door Opener...

1 Answer

Motor hums but nothing happens


I just had the same problem. Extreme cold, garage door stops working, motor hums, same here. I opened up the my garage door opener(after unplugging it), and found that the wormwheel had a wear spot on it. This is the gear that allows the motor to raise and lower the garage door. Any way, after the wife "sugested" that the door was too heavy to lift, I went and bought a new garage door lifter. But if you are handy dandy with tools, I have seen the wormwheel for sale here. http://www.aaaremotes.com/gearsprocask.html It's the plastic wheel that went bad on me. If I would have found this before buying the garage door opener, I would have got the sprocket assembly. I hope this helps!

Jan 10, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Need to reconnect the carriage on garage door opener.


depends on which carraige. try pulling rope straight down and lifting door to open inner troley

Dec 19, 2008 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

LiftMaster Gargage door opener problem


The door obstacle detector(reversing switch) needs adjustment, or the down limit sensor needs adjusting, or one of the lift springs is loose or broken. First, remove power from the opener, pull the red door release rope, and try to lift the door up manually. You should be able to lift it all the way open with litle effort. If it opens ok, pull the door down about halfway and let go. If it is properly balanced, it should stay where you left it. If the door fails either one of these tests, it needs spring replacement or adjustment. If the door moves ok, refer to your owners manual on how to adjust the reversing switch, linit switches, and photocell sensors at the door bottom.

Jul 29, 2008 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

Garage door will not open all the way


There seems to be a loose connection somewhere in the controller circuitry. I would suggest to visually inspect the solder connections on that controller board using a magnifier aid between 2X to 4X.
Good Luck.

Feb 29, 2008 | Sears Craftsman LiftMaster Chamberlain...

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