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

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How to replace the board in the Lift Master garage door opener?

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The board is attached to one end of the opener. Remove that end and the board unplugs.

Posted on Sep 13, 2010

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My Lift Master garage door will not close. It makes the closing noise but the door does not slide down. Whcan I talk to to fix this?


Sounds like you have a chain drive garage door opener and you hear a humming sound when you push the wall console. The motor is running but the chain does not move. You need to replace the gear & sprocket assembly.

Jul 06, 2014 | liftmaster Lift Master 377LM 376LM 315 MHz...

1 Answer

I need a replacement for a Lift-Master 1/2 HP garage door opener. I can't find a model number, but do have a serial number: 41A4252-7B. It was installed in 1995, but I have no original papers on it. Is it...


The number you give is a part number for the logic board. The model number is on the opposite end of the opener. If it is a Craftsman the model number will start with 139.

Jan 06, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I have a 1993/94 Lift-Master that I just replaced the sensors on. Door operates properly, but now the lights will not shut-off at all.


Replacing the sensors shouldn't affect the lights. If you have had an electrical storm or power surge you may have a bad relay on the logic board.

Dec 26, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

What logic board works with a Lift Master Proffessional Line Model T5011L single phase


Cannot find the model number you gave but the part number for the logic board is printed on the end of the opener with the wire hanging down. It looks something like 41A4201-6C.

Nov 30, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I have a Lift-Master Security remote garage door opener. It has a new battery. Can it be reprogrammed or do I have to replace the remote?\r\nThank you for your assistance. Model number971LM. It will...


ANY TIME YOU CHANGE THE BATTERY IN A REMOTE IT NEEDS TO BE REPROGRAMED.

ON THE CIRCUIT BOARD YOU WILL FINS A SQUARE BUTTON.
PRESS AND RELEASE NOW HOLD DOWN THE BUTTON ON THE REMOTE FOR ABOUT 20 SECONDS. WHEN YOU PRESS THE REMOTE THE NEXT TIME THE DOOR SHOULD OPEN.

Oct 21, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

The garage door opener is not opening everytime.


There is a real good possibility that a bad connection could be your problem. I would especially look at the connections around the small transformer on the logic board.

Apr 22, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Help, my Lift-Master garage door opens 2-3 ft


SOUND LIKE A BROKEN SPRING.
LOOK ABOVE THE DOOR IF THERE IS A GAP IN THE SPRING IT NEEDS TO BE REPLACED,
I DO NOT RECOMEND THIS AS A DIY JOB. THEY ARE UNDER MUCH TENSION AND CAN COST YOU FINGERS IF YOU DON'T KNOW WHATYOU ARE DOING - CALL A PRO

HOPE THIS HELPS

Apr 10, 2010 | liftmaster Chamberlain Garage Door Opener...

1 Answer

I have a Chamberlain 1265 Lift-Master Professional. Does that model still exist or if not, what has replaced it. Also who carries it


I know that that is a lift-master opener. chamberlain owns lift-master. but if its a new opener your looking for try the lift-master 3800 jack shaft opener. it features a low profile design that mounts next to the door instead of on the ceiling above the door, and also incorporates a battery backup so that you will never be locked out again.

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

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