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

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Liftmaster door stopped working. hear click,and flashing led yellow light.

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Take the cover off and check the drive gear. It is white nylon and is just in front of the motor. It may be stripped or you could have a bad logic board especially if you have had storms in your area.

Posted on Jun 12, 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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https://www.liftmaster.com/Customer-Support/Videos

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Feb 08, 2016 | Building Materials

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I have a Liftmaster Model 2500 opener. It is about seven years old, and worked great until recently. It has stopped working, including no lights at the Multi-function door control. If I unplug the...


THIS IS PROBABLY CAUSED BY A SHORTED WIRE.

OR A BAD WALL CONTROL.
DISCONNECT WALL CONTROL & TEST.

IF STILL NO RESULT DISCONNECT WALL CONTROL WIRES AT THE POWERHEAD & TEST AGAIN.

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Nov 15, 2010 | liftmaster Chamberlain Garage Door Opener...

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

I have a liftmaster pro 1/3hp opener. the yellow led blinks in a steady pattern and the remote works intermittently. This happened a few months ago then it mysteriously cleared up


Glad to hear it cleared up for you. Remember that random flashing is normal. It sounds like something in your garage or nearby was interfering with the radio signal. If you have added anything electrical you might want to keep an eye on it. Even things as weird as a fish tank heater can cause problems.

Mar 03, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Left Sensor has yellow led & right sensor is green. Garage closes and then immediately opens. I'm assuming it's the sensor with the yellow led. How do I fix this?


If the main light flashes 10 times when the door reverses it is a sensor problem. Make sure the door isn't hitting the floor and then reversing. This problem will not cause the light to flash 10 times and can be corrected by adjusting the 'down limit' which is on the side of the motor unit.

Jul 30, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Liftmaster 1/2 hp won't open


Turn the gears again by hand like you did and lower the door a couple feet. Now find the 'up limit' on the side of the motor unit and using a small screwdriver turn this about 3 turns in the opposite direction of the arrow printed on the cover. Now you can go ahead and operate the door.

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

1 Answer

When I push open or close the unit starts but stops the yellow light on rear of unit blinks 4 times then a short pause and blinks 4 times again and continues to do this



# of flashes

1

2

3

4

5

6

Rapid Flashing





Problem

The Protector System wire open or totally misaligned

The Protector System wire shorted or black/white wire reversal

Door Control or Multi-Function control Panel wire shorted

IR sensor slightly misaligned (dim or flashing sensor LED)

Motor overheated/Possible RPM sensor failure -- unplug to reset

Motor circuit failure -- replace RX/LX board

Liftmaster transmitter with the correct format code being received
(opener not necessarily programmed to respond)

Mar 28, 2009 | liftmaster Chamberlain Garage Door Opener...

1 Answer

Need to change keypad access code for Sears garage door opener


To change the code, you need to hit the LEARN button the back of your machine. You will see a yellow light flash. Enter a 4 digit code on the keypad and press enter. The lights on the opener should flash and you should hear a click. Your keypad is programmed.

Feb 19, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Flight flashing on liftmaster 2000


Apparently this problem is caused by weak batteries in the remote, I changed them and that solved the problem
Steve

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

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