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

1 Answer

I have a liftmaster garage door opener 1/3 hp. One side has a green light the other has a yellowish orange lignt on and it has stopped working. What is wrond with it?

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  • dhesley Sep 29, 2009

    No it doesn't do anything.

  • Don Maggard May 11, 2010

    Nothing is wrong with the lights. Does it do anything at all? Make any kind of noise or start and then stop?

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  • 3,197 Answers

Check for power at the outlet. Plug in a small radio or lamp. If you have power there I would remove the logic board and check for burnt or missing traces on the printed circuit board especially around the small transformer.

Posted on Sep 29, 2009

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I have a Craftsman Keyless entry model 132B2386-6 with flashing lights, wont open. Already put in new battery still doesn't work


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Check the resistance down button (There is one for down and another one for up). You may need to adjust the sensitivity. That way even if for some reason the have hard time coming down, less sensitivity may solve that issue.

Oct 22, 2013 | Sears Craftsman LiftMaster Chamberlain...

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I have liftmaster garage door opener P/N 41A-5483-4. It worked normally. but all of sudden, when door closing, it reverses automatically at half way down, and garage door light bulb starts blicking 6...


Use the pull cord and disconnect the opener from the door. Operate the opener and let the carrier slide back away from the door. Is the carrier moving smoothly when disconnected? Next, lift the door by hand from the bottom to the top. Is it moving smoothly? If not, lubricate the axles of all the rollers on both sides of the door. Check the cable pulleys at the top sides of the door channel, lubricate them as well. Are all cables in all the pulleys, there are 4. After checking those things, there is a "up force" and "down force" adjustment on the opener, try increasing the "up force" by turning the adjustment in the direction of MORE force.

LiftMaster Garage Door Opener Frequently Asked Questions

Jan 02, 2011 | liftmaster Chamberlain Garage Door Opener...

1 Answer

On the sensor for the craftman garage door opener 1 is orange and the other is green and my garage door doesn't open with the remotes


Nothing wrong with the sensors. They don't work when the door is opening anyway. Only when closing. Make sure the light in the wall control is not flashing. If it is press and hold the lock button for 3 seconds.

Dec 17, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I have liftmaster professional garage door opener. it opens ok but does not close with remote and light keeps flashing on garage door opener. I checked both sensors and seems like the sending sensor light...


If your sensors are not pointed at one another the light on one of them will go out. Tweak them a bit. If you cannot get the light to come on then your sensors are bad.

Oct 25, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

We have the craftsman 1/2 hp garage door opener and it will only go up 1/4th of the way up and stops. I already reset the unit. One sensor is green and the other is yellow. Cleaned the yellow side sensor,...


The sensors only work when the door is closing. Remove the cover from the motor unit and check the drive gear. It is a white nylon gear and is probably stripped.

May 16, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I have a 41A5483 chamberlain liftmaster garage door opener. At very random intervals it simply stops working, the unit light goes out and as I press the remote or wall button You can hear two clicks that...


first make sure there is nothing blocking the eye beams on eack side of the floor. like bugs spiders cob webs all can trigger it. wiggle them and make sure the eyes line up so that you receive a green light, if all ok try this, get a ladder and on the back side there is adjustment screw try to adjust the up and down pressure.

Mar 23, 2010 | liftmaster Chamberlain Garage Door Opener...

1 Answer

Garage door will not open all the way


You either have a broken door spring or the drive gear is stripped.

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

1 Answer

Garage door not closing all the way


what brand. you described three sensor lights/ Craftsman/Liftmaster have two, Sounds like saftey beam problem,

Jan 15, 2009 | Sears Craftsman LiftMaster Chamberlain...

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