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

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I have 2 garage doors

One side works and the other side blinks yellow can you hellp

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  • Mayer overhead door co.

    please let me know more info ,one side of what works ?and the other side of what blinks yellow? please explain the whole question ,this is extremely vauge and i only would be guessing ! thanks glenn

  • STEVE WOLFINBARGER
    STEVE WOLFINBARGER May 23, 2010

    IS IT THE SAFETY EYES BLINKING YELLOW? IF SO IT IS EITHER A BAD WIRE OR OUT OF ALIGNMENT. BE SURE THE EYES ARE POINTED AT EACH OTHER. IF THEY APPEAR TO BE OK CHECK THE WIRES. IF YOU CANT FIND ANY LOOSE CONNECTIONS OR BREAKS TRY CONNECTING WITH (TEST) WIRES TO BYPASS THE EXISTING. IF IT WORKS THEN YOU MAY HVE TO REPLACE THE WIRES. THEY SOMETIMES ARE DAMAGED INSIDE THE WALL. THE ACTUAL SAFETY EYES CAN BE BAD BUT VERY RARELY HOPE THIS HELPS

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  • Master
  • 3,197 Answers

They are not aligned properly. Tweak them until it quits blinking.

Posted on May 23, 2010

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Car garrage door opener


smart or learn button is located on the back of the garage door opener. (the machine that is over your head) on most units such as liftmaster, craftsman, chamberlin. its on back or side by the light bulb and is green, yellow, orange/red, purple. genie units are black button behind light cover. or external on old units. push and hold your cars homelink button will blink slow, at the same time push and hold the remote for the garage door. led light in car will blink fast. let both go. now go to the garage door head unit, (overhead) and push the learn button. button will blink and you have 30 sec. to go to car and push the cars garage door button. head unit should flash its light, letting you know that it is programed succesfully. genie units push 3 times

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Door stopped working when I was trying to adjust the door. Blinking yellow light on the overhead unit


The motor has a thermal overload that will turn it off it if starts to overheat. Normally a 15 or 20 minute rest and it will automatically reset. The blinking yellow light may be sending a code. If it blinks 5 times and then pauses and then repeats it is the overload.

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2 Answers

DOOR CLOSES MOST OF THE WAY AND THEN OPENS. LIGHT THEN BLINKS TEN TIMES. I NOTICED THAT ONE SAFETY SENSOR IS GREEN AND ONE IS YELLOW. PLEASE ADVISE.


Hi. The sensor with the yellow light is telling you that it is miss-aligned, Usually it only takes getting bumped to knock them out of alignment.
I would slowly turn or adjust the positioning of the sensor.
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It's out of adjustment, so the sensor is looking at it like there is an object blocking the door from closing.
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I hope this helps you out.

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1 Answer

One of the sensors on the side of the door is yellow, the main unit hanging in the garage has a yellow light, and it only closes if we hold the button down. otherwise light blinks and it kicks back, like...


senor are obstructed, gently wipe off the lenz, look for any dust, cob webs or loose wires.
make sure the eyes see each other ( look for the lites on the side) one green and one yellow, tap on to make sure they do not flicker, move them around until you have a strong steady lite and then tighten down. this should solve your problem

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1 Answer

Door won't close, blinks 10 times, sensor light yellow


Anytime the main light flashes 10 times and the door reverses to the open position it is a door sensor problem or the wiring to them. Nothing else causes this symptom.

Sep 13, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

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this probably means you have a bad photo eye if you happen to have to doors side by side may be picking up on other sides photo eye just switch sides from left to right, however if the lights are coming on but does not mean that photo eye is not bad it has a small circuit board inside of it...

Apr 03, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

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It sounds like you did a really good job! My Craftsman 1/2 hp gar. dr. opener has a red reset button on it on the l/h side as you are looking at the light/motor from the garage door opening. You have to take the light cover off to be able to see it. My reset button is on the same side as the ground wire. You might check the ground wire while you're there. I really hope that this fixes it for you (and me). I'm quite sure it will as you know your way around the garage door opener already. Good Luck and Let me Know (Please) if it fixed it or not. If I think of anything else, I'll let you know. Have a Good Day!

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

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