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

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Overhead light flashes and clicks when i push remote or button. I have to hold down the button for the door to come down completely. Sensors have been changed and light up appropriately.

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If the overhead light flashes 10 times and the door reverses to the open position it is a door sensor problem. Make sure the lights on one of the sensors is not blinking ever so slightly or the light is dimmer than the opposite one. Check to make sure they are connected properly. The solid white wires go to terminal #2 and the wires with the black stripe go to terminal #3.

Posted on Aug 30, 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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try resetting the homelink system by holding down the first and last buttons at the same time until the light flashes rapidly on your visor. this could take up to a min. then at the same time press whichever button you want to program on the visor and the garage door remote button at the same time until the light on the visor flashes rapidly.that could take up to a min. after that is complete you need to go and push the learn code button on the back of the openers unit, then go and push and hold the button on the visor you just programmed until you hear a click or you see the light flash on your opener unit. after that try using your homelink. note there is about a 3 second delay when using homelink. you need to push and hold the button until you see the door operate.

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I'm having to hold the main remote button down continuously to get the door to close. It acts like something is obstructing the path, but it's clear. The sensors have a green light on one and a...


You need to hook those wires back up and then check the door sensors very closely. If the light in one of the door sensors is dim or flashing it will cause your problem.

Sep 12, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

My door will not go down from remote.It starts,jerks and quit ,lights flash.It is the same from main wall remote also.I have to hold down the the master button for door to go completely down


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My craftsman 1/2 hp garage dood does not close when it's cold out (with either a push on the remote or a single push from the wall). I have to hold the wall button in until it's completely down. When I do...


Make sure the brackets for the sensors are tight and the small light on the sensors is not blinking ever so slightly. You also might try shading the sensor so that the sun is not shining directly into the lens.

May 20, 2010 | Sears Craftsman LiftMaster Chamberlain...

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Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+: My craftsman 1/2 hp garage dood does not close whe...


If the main light flashes 10 times when you try to close the door it is a sensor problem. Make sure they are not flickering ever so slightly and that they are not loose on their brackets. Tweak them a little bit.

May 18, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door opener won't close, light on unit flashes


Easy problem - and easy (temp) solution.
The safety pet sensors are blocked or broken
Press the button in the garage and hold it until the door is completely closed.....this over rides the safety sensor at the base of the garage door.
You cannot over ride the sensor with the wireless remote.
Check to be sure that the sensors are pointing at one another.
If they are, check the wires.
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I have a quantum model 3212 serial #3000...fcc id #kj8intrmt...ok im trying to program my garage door to my truck..help please


1. In the vehicle press and hold the two outside buttons until the indicator light begins to flash (after 20 seconds). Release both buttons. Note: Some vehicles may require the ignition switch to be turned to the second (or "accessory") position during the programming process.

2. Hold the end of your handheld transmitter between 1 and 3 inches away from the Homelink surface (located on your visor or overhead console) keeping the indicator light in view.

3. Using both hands, simultaneously push the handheld transmitter button and the desired HomeLink button. DO NOT release the buttons until step 4 has been completed.

4. Hold down both buttons until the indicator light on the HomeLink Wireless Control System flashes, first slowly then rapidly. When the indicator light flashes rapidly, both buttons may be released. (The rapidly flashing light indicates successful programming of the new frequency signal.)

To train your garage door opener.

1. Locate the smart/learn button on the garage door opener motor head unit.

2. Press and immediately release the smart/learn button.

Firmly press and release the programmed HomeLink button. Press and release the HomeLink button a second time to complete the training process. (Some garage door openers may require you to do this procedure a third time to complete the training.)


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IF U HAVE TWO EYE,SENSORS ON EACH SIDE OF THE DOOR SEE IF SOMETHING IS BLOCKING THE EYES OR SOETHING IS COVERING THEM, OR THEY ARE OUT OF ALIGNMENT, ONE SHOULD SHOW GREEN, AND ONE RED EYE, GOOD LOCK

Jan 25, 2009 | Sears Craftsman LiftMaster Chamberlain...

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