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

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I have a 1/2 HP garage door opener and it stops in the middle, doesn't go up or down and sometimes doesn't move at all. The left eye is green and the right one is yellow. On the motor itself sometimes the light flashes yellow

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Remove the cover and check the drive gear.

Posted on Jul 06, 2010

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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

Chamberlain troubleshooting


Check to see if sensors (eye) on sides of door are lined up, they need to be looking directly at each other. If that doesn't work change sensors, simple, install, hook up 2 wires per sensor, wire with line to same wire, blank wire to same blank wire and align so sensors see each other.

Jul 29, 2014 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door opens about 4 inches, stops, then goes back down. No flashing lights at all. One sensor light is green, the other is a steady yellow. What's the issue?


something may be obstructing the door, so pull the red emergency release handle and try to pull the door manually.if you cant move it manually, call for professional help

make sure all snow and debris are clear of the area where the door closes

if there are no obstructions, manually set the adjustment controls on the back side of the opener panel. weather can sometimes change the amount of force needed to open/close. adjust the setting with a screwdriver to no more than 260 degrees, about 3/4 of a turn

Feb 09, 2013 | Craftsman Garage Door Opener 1/2 HP Chain...

1 Answer

Garage door opener (1/2 hp model #139.53675SRT). Does not respond to door opener, vehicle remote or key pad remote. gives two quick buzzing sounds when any of these devices are pressed. Wiring from door...


The eyes should have a light on them. Either red or green. If they are green then the eyes are ok. If there is no light on either eye, then this is the problem. If the eyes are okay, then I would check the motor. Make sure that it is getting power. Another thing that you can try is to unlock the door from the opener and see if the opener will move the chain by itself. The door could be jammed.

Jan 19, 2011 | Vacuums

3 Answers

I have a craftsman garage door opener and I have to hold the button down in order to close the door. The door opens fine and the sensors are clear. The unit starts to close then stops, the lights start...


When you can close the door by holding down the wall button it IS the safety eyes or wiring.

If the eyes are mounted to the track. Many times the track wll move as the door closes causing the eyes to move out of alignment.
Watch as the door moves down and see if they need to be adjusted.

If the eyes are not both lit - they are out of alignemnt or have a wiring problem. try adjusting them and see if the lights come on. - if not check the wiring

Hope this helps

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

1 Answer

Liftmaster 1/3 HP opener won't close


strange, was going to say eyes not aligned but you say they are. try over-riding by holding down wall pushbutton or jumping from red and white terminals. Did you increase down force. Are limit switch terminals moving, If it hits one, it should go back to other,

Feb 12, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Pressing remotes the door won't go u[


It sounds like you have the lock enguaged. When it is flashing it locks out all remote access. Hold the lock button for 3 seconds. The green light should go solid. On the issue of closing, it is most likely a safety eye issue. Hold down the wall button. If it closes it is the safety eyes. Holding the button overrides the safety eyes. Make sure that thelight on both eyes are both lit.

Jan 27, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

Remote does not open or close garage door; inside button flashes


What has happened is that you electric eyes are blocked or have gone out. The eyes are at the garage door about a foot of the ground on both sides. There should be a red or green light on one of them. If not some thing is blocking the beam that goes across the door. It is a safety beam so kids can nt get hurt when the door is coming down. If the beam is broke the door will go back up.

Jan 24, 2009 | Chamberlain Powerdrive PD422D 1/2 HP...

2 Answers

GARAGE DOOR OPENS BUT WILL NOT CLOSE AUTOMATICALLY


is bulb on motor flashing 10 times. then you have electric eye problem. otherwise, sounds like you need to increase down force a hair. adjustement is on logic board, right knob.

Jan 06, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

Have to hold button down to close door in cold weather


You have a photo eye (sensor) issue as you suspected. Be sure both green lights are on.  If one is flashing or is off, the photo eyes need to be realigned or there may be a wire shorting out (check for staples in the wire) to the photo eyes.  Sunlight can also be an issue.  The photo eyes might have to be moved away from the opening to be out of the sunlight.

Dec 31, 2008 | Sears Craftsman LiftMaster Chamberlain...

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