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

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Garage door will not open all the way

One sensor light is green, one is orange. the garage will only open about a foot then stop. not sure of the brand name of the garage door.

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

Posted on Sep 25, 2009

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Ok so I am having a problem with craftsman garage door, The sensor light are right on green and one orange, but i still have to hold down the button in the garage to shut the door. Also today i thought...


If when you try to close the door the main light flashes 10 times and the door starts down and then reverses to the open position you have a door sensor problem. Make sure the lights in the sensors are not flickering ever so slightly. The color of the lights doesn't mean anything. The keypad sounds like a separate problem. Make sure the battery is good.

Apr 07, 2011 | Sears Craftsman LiftMaster Chamberlain...

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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...

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I have a Craftsman 1/2 HP garage door opener, the left sensor is orange and the right sensor is green. the problem is that when i try to open the door, it only opens about a half foot and stays there. i...


Nothing wrong with the sensors and they only work when the door is closing anyway. Sounds like you may have a broken door spring or a bad drive gear. The drive gear is white nylon and is in front of the motor. It will be obvious if it is going bad.

Dec 14, 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

Garage door sensor light at bottom of garage door


Could you let us know what problem you are having with your opener?

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

2 Answers

3.75 craftman garage door goes down a foot then immediately reverses back up


If when it does this your main light flashes 10 times it is the door sensors. Make sure they are aligned properly. If the main light doesn't flash 10 times then you most likely have a bad RPM sensor board. It is a small printed circuit board just in front of the motor.

Jun 28, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

6 month old garage door will work.


On the back of the opener near where all those white wires go you will find 2 controls. One is labeled "up force." Increase this about 1/4 turn.

May 18, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

My Garage door is not opening or closing. One of


depending on model, both are green or one green/one orange. that is not your problem, however you really do not give me much to work with. "It does not work". Does chain move? Does motor run? What is you hold wall pushbutton? Give more info.

Apr 24, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage sensor problem


The colour on the sensors doesn't change.
One is orange constantly and the other is green when detecting a signal from the orange sensor.
If the green is flickering, they are not adjusted correctly.Move the green sensor until you get a good solid green. Holding the wall pad button down, just bypasses the sensors.

Try adjusting only the sensors so that they are solid.

In addition, check the little yellow light on the back of the machine and count the flashes.
The number of flashes will tell you what the error is in your manual.

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