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

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My garage door will not close during the day

My garage door closes in the dark just fine but during the day It will not close without holding the wall button down. I think maybe the light is glaring on it but I do not know how to fix this

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What it is is the electric beams at the door are getting blinded buy the sun. They are the two black boxes on both sides of the door about a foot from the ground. Put a piece of card board in front of them not blocking the beam dut to block the sun. All that they are is safety beams for kids so they do not get hurt. If you have to move them to the top where the sun will not hit them. Sorry to say though you can not remove them all the way. Also make sure the lite on them is not blinking if so they are out of line.

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Posted on Mar 05, 2009

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Just move the sensor that the sun is hitting back about a foot. You will have to use a piece of 2x4 about 8" long. Secure it to the trim (vertical) with a couple of long screws. By mounting it vertical will bring your sensor out
to where it can see the other. Line them up and your troubles are over.

Posted on Jan 22, 2013

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1 Answer

I have a Sears craftsman model 139.53637SRT garage door opener. My remote has not worked in a long time. I use the wall control button and have to hold the button in order to open or close the garage door....


It sounds like your door sensors may be bad or misaligned. Make sure the small light on each sensor is lit and not flickering. That could be the cause of your having to hold the wall button down until the door is closed. You can buy a universal remote but if you only had one remote before it could be the receiver that has quit. A new remote would not fix that but the only way to find out is to try.

Aug 15, 2011 | Sears Craftsman LiftMaster Chamberlain...

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My garage door opener opens fine from the wall unit and the remote, however closing is a problem, when closing the door from the wall unit I have to press and hold until the door is fully closed, if I...


You have a door sensor problem. The IR sensors found at the bottom of the door rails will need some attention.
Both have an LED visible. Is one on or none? If none are on, check the wiring. Older models had a plug in the rear of the sensor that corroded due to moisture, causing intermittent or no operation.
If 1 is on, check to be sure that they are aligned with each other. If they are crooked, the door will not close without holding the wall button (as you described). They are easily knocked out of alignment.
Check for cobwebs and debris blocking the sensors.
Replacement sensors are around $50 and are easily installed with just wire cutters and pliers. Remember to unplug the unit before replacing the sensors.

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

1 Answer

Okay, I'm having an issue with my Sears Craftsman garage door opener. Not exactly sure of the model number, but can dig it up if that's necessary. Symptoms: 1) Door opens fine from either wall button or...


It sounds like you have a problem with your wall button. I would remove the button from the wall and then disconnect the 2 wires on the back. Remember where they go as they are color coded. You can then momentarily touch the two wires together to check the operation. There isn't enough voltage there to bother you.

One thing to remember. If when the door reverses the main light flashes 10 times it is a door sensor problem and nothing else.

Sep 23, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Must hold wall unit to close garage door...


there is an error in the system. most likely The safety beams (mounted on the track near the floor) are out of alignment and the LED light should be blinking. The garage door opener will not let the door close if the beams are misaligned. Realign them and the LEDs on the beam or on the operator will stay on. you should be able close the door now with one push.

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

1 Answer

Garage door won't close by remote in cold weather


There are ususally two adjustments on garage door openers...
One is for the pressure and the other is for the travel. Assuming that the travel adjustment is properly adjusted...

On a cold day things are a little tighter and it "wants" a little more downwards pressure to complete its cycle. Sorta like me in the morning -- I need a little coffee to get going on a cold morning.

Adjust the down pressure/force just enough to make the unit close properly. Do not over adjust the down pressure or you will find it won't stay closed. Sometimes the manufacturer doesn't make it too clear where this adjustment is, but you should be able to find it if you look around.

I have seen units that were installed for years all of a sudden need a little tweak of this adjustment.

Good luck

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

1 Answer

Garage door will not close


HOLDING DOWN THE WALL BUTTON OVERRIDES THE SAFETY EYES.
WHEN HOLDING IT DOWN MAKES THE DOOR CLOSE PROPERLY THE PROBLEM IS IN THE SAFETY EYES.

ARE BOTH LEDS ON? - CHECK FOR A LOOSE OR BROKEN WIRE.
ARE THE EYES WIRED CORRECTLY?
ARE THEY AIMED AT EACH OTHER?

Jan 21, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door close but motor keeps running


The close setting limit switch needs adjusted. Once it is adjusted it should work just fine.

Dec 24, 2008 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

My garage door will not stay down when I try to close it.


IF THE DOOR CLOSES ALL THE WAY WHEN HOLDING DOWN THE WALL BUTTON AND REVERSES 6" FROM THE FLOOR WHEN NOT HOLDING THE BUTTON.
I WOULD GUESS THAT THE SAFETY EYES ARE MOUNTED ON THE TRACK.
WHEN THE DOOR CLOSES THE TRACK AT THE BOTTOM IS TOO TIGHT CAUSING IT TO FLEX AS THE DOOR GETS NEAR THE BOTTOM. WHEN THE TRACK FLEXES THE EYES ARE POINTING FURTHER AWAY FROM THE DOOR AND EVENTUALLY THEY ARE TOO FAR OUT OF ALINMENT AND THE LED WILL GO OFF - THE DOOR GOES BACK UP.

SOLUTION: YOU CAN USE THE CLAW END OF A HAMMER TO TAP THE TRACK OUT A LITTLE WIDER - TAP NEXT TO THE WALL ON THE BRACKET THAT HOLDS THE TRACK TO THE WALL. MOVE THEM ABOUT 1/4" EACH SIDE.

OR

YOU CAN MOUNT THE BRACKETS TO THE WALL OR THE FLOOR.

THIS SHOULD SOLVE IT

HAVE A GREAT DAY

Dec 19, 2008 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

My garage door opener will open the door but will not close it. i have to close the door with the manual button on garage wall.


when you close by wall button, are you pushing it or holding it. if holding, you have a safety beam problem.

Dec 16, 2008 | Sears Craftsman LiftMaster Chamberlain...

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