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

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My garage doesn't come down

Hi one of my photo eyes lighted green and the other one lighted yellow does that mean they are not aligning? Or the lighted yellow one is malfunctioning I need to replace it?

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They need to be pointed at one another to work properly. If the light still doesn't come on when you tweak it then your sensor is bad and needs to be replaced.

Posted on May 17, 2010

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1 Answer

Are both eye sensors supposed to be green. I have a yellow and green


One should be green and the other amber - The amber one stay on all the time, the green one tells if the alignment is OK or not (solid green means OK)
Hope this helps, if it does please click 'helpful below'

Mar 08, 2016 | liftmaster Chamberlain Garage Door Opener...

1 Answer

My garage door opener is a 3/4 craftsman and one light is yellow and the other is green. I put my hand in front of the green light and the green light went off. the other side is a yellow light and it


Hi Vickie,

The safety beam portion of the garage door opener is set up to stop the door from closing if something (car, person, etc,.) is in the doorway.

When the door is open - if you press the hard wired push button (not the wireless remote) the door will either close until shut completely, or begin to close and reverse direction as soon as you let go of the button. When this happens, it *usually* means that a sensor is blocked - and reversing the door motor. If you try yhtis with the remote the door may not move at all or just bump down and stop.

You should re-align the sensors as described in the link below. Good luck!


How to Replace the Safety Sensor for Garage Door Opener Repair Guide Help...

How to Adjust Photo Eye on Garage Door

Nov 03, 2014 | Craftsman Professional 3/4 hp Hydro-Glass...

1 Answer

My garage doesn't come down


The color of your door sensors is normal. Make sure they are pointed at one another and that one of the lights isn't flickering. If the main light is not flashing when the door starts to come down you may need to increase the down force just a tad. It is an adjustment on the rear of the motor unit.

Mar 23, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

My liftmaster formula one has one sensor light green and the other yellow. no amount of realignment helps this. the garage door will bounce back up when it hits the bottom and won't stay shut. have tried...


One photo eye should be yellow and the other one green. The problem seems to be your down limit to be set too far. When you stand facing the door behind the operator the limit adjustments should be on the left hand side under the light cover. The down limit is the one closest to the door.

Sep 26, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

One of my garage door sensors is yellow while the other is green.


It means your sensors are properly aligned. Are you having a problem?

Jun 16, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

6 month old garage door will work.


what do you mean it does not work. does not open? does not close? what are you activating, wall pushbutton or handheld remote. give some pertinent info and i can help you.

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

1 Answer

We have 2 sensors. 1 has a green light and the other has no light


Your safety eyes are out of ajustment. Make sure that the eyes are pointing directly at each other. A light will come on on each eye when they are properly aligned. The only other thing that could be wrong is that one of the safety eyes could be bad, and the only thing you can do is replace the eyes. 99% of the time the problem is an alignment issue. By holding down the wall button, you are overriding the safety eyes.

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

1 Answer

Garage Door Opener Lights


Some craftman operator don't have that feature. Are both photo eye lights green? Feature not available. If the photo eyes are yellow and green feature should be avilable. The operator needs to have a three button wall station. With the light on the operator off press and hold the "light" button for about a minute until the light flashes.

Jan 11, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door sensors out of alignment


The lights are suppost to be yellow (power to photo eyes) and green (lined up).
 1.Check to see if the door is running correctly.
  A. Run the door down and pull the emergency release. See if the door will run easily by itself.
  1. If it runs hard by hand try lubricating the rollers and hinges with silicone spray or some form of lubricant (not WD 40)
  2. If the door is heavy and falls back to the ground, you probably have a spring issue (either broken or needs more tension) in this case call a professional door repair company in your area.
  B. If the door runs fine then check the up force on your operator (the box that hangs from the ceiling). If the light bulb(s) on your operator are on the front and/or back, the force adjustment screw is on the back of the operator. If the lights are on the sides of the operator then the force adjustment screw is on the right side (looking from the back of the operator and facing the garage door). Turn the light blue adjustment screw with the up arrow to a higher number.

Jan 09, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Photo eyes inop, opener still operates


if eyes came with opener, that is good. clean off lens. are both eyes leds lit. try aligning again. New eyes avail for $30 if you want to try.

Jan 07, 2009 | Sears Craftsman LiftMaster Chamberlain...

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