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

1 Answer

LiftMaster 1/3 HP- Garage Door Opens but will not close

My door was working fine without problems until recently. The garage door opens but will not close. The main light will flash but it won't move. At first I thought it was due to the freezing weather but then I noticed that one of the sensor lights was not lit. I replaced the sensors and still no light. I thought that maybe the problem was in the wiring, so I replaced the wiring from the sensor to the back panel. Still no light. I pressed the button on the back panel and the green light does turn on. Do I need to replace the logic board or the whole system. I have tried to replace everything dealing with the sensors but I'm not having any luck.

Posted by on

  • eleiva Jan 24, 2009

    I tried changing the force, like you suggested, and it still does not go down. Still doesn't explain either why one of the sensor lights isn't on. Is that the problem? Opening and closing the door manually is not how I want to spend my winters closing the door. Especially since I live in a townhouse complex and have to run out, hold the button from inside, go out the front door and then through the alley to get back to my car. Any suggestions for a different brand that will not act like this in the winter?



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 548 Answers

I have had a similar problem related to my doors when they get cold-soaked. The tracks actually warp a little throwing the sensors off and causing the door to bind. The door will go down a bit then come back up. I overcame this be resetting the force that the motor puts out to lower the door and it works fine now. If you can wait for things to warm up, use the manual release lever and lower the door by hand and then reset the lever so the door can't be opened manually.

Posted on Jan 24, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Garage door will close, stays shut for a few seconds and then opens on its own.

The opener is closing too far. On the side of the opener, you should see 2 white knobs, recessed into the side. Using a flat blade screw driver, adjust the close knob (closest to the door side of the opener), anti-clockwise until the door will close gently on the floor.

Aug 24, 2013 | liftmaster Garage Door 1/2 Hp

2 Answers

Hello we have a Chamberlin 2265R 1/2 HP gargare door opener. There are two issues. 1) recently when we press the remote to open the garage door the door will travel a short distance then stop press it...

I have recently had the same problem. I found one of the brackets on the garage door was broken. The broken piece which was hanging may have been interfeering with the traveling of the door. It was a diamond shapped bracket labeled N1. the door opens and closes, plus putting stress on the dootr. works fine now, i am in the process as we speak to find a replacement bracket. It was driving me crazy. The door would open fine, but when closing it would stop then go back up, the light would flash. Check all yhe brackets on the garage door itself.

Nov 27, 2010 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

My Craftsman garage door opener opens fine. It

It could be closing too far or the sensitivity could be set too sensitive.

Lube the springs, wd-40 rust may be the whole problem.

If the door hits and the opener continues to move until the rail flexes upward and then reverses - probably the travel adjustment.

Does the door close and stay closed if you hold the wall button down constant until it closes? - this would indicate a safety eye problem.

If the door reverses before it hits the floor or just as it hits the floor it could be the sensitivity or if the safety eyes are mounted to the track they could be flexing enough to move the eyes out of alignment.

Hope this helps.

Jul 11, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Liftmaster 1/2 HP Garage Door opener won't open or close. Has been working fine until I pulled out this morning. The door will move freely if I disengage from opener. Went up ladder to see chain not...

The shaft on these garage door motors are not direct drive systems. You'll have to open up the box to see what the actual problem is. I have had stuff like this happen where a gear just slipped out of place.

Here is a link for a parts supplier. I don't know your model but it looks like most of the Liftmaster worm screw gears and drive gears are plastic so it's possible that one of them has cracked.

Feb 14, 2010 | liftmaster Chamberlain Garage Door Opener...

1 Answer

My Liftmaster 1/2 H.P. opens but cannot be closed (without depressing the button on the wall until the garage door comes down all the way. Any help will be much appreciated



Jan 25, 2010 | liftmaster Chamberlain Garage Door Opener...

1 Answer

Craftsman 1/2 HP garage opener opens only 6 inches

Remove the cover and check the drive gear. It is white nylon and is just in front of the motor. It may be stripped. Take a close look at those door springs. They can sometime appear to be okay when one is broken.

Oct 10, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door only opens 4 inches then reverses and stops

you need to replace gear when the door is fully closed. then do your tweaking.

Jun 01, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I have a craftsman garage door opener (1/2 hp) won't close proper

Check your door sensors. They have probably been bumped. Tweak them until they are pointed at one another and the small light on each one is lit and not blinking.

May 31, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage Master 1/3 HP 1997 Door Working, not responding to Remote

I have the exact same situation, except my model (139.53607) is older than yours and does not even have an LED. Remotes only works after after shop light goes off (5 minutes or so), but wall button works fine. Did call Sears Service and the tech told me the logic board is probably shot. Don't want to waste money on service call so I'll probably have to buy a completely new unit in the Spring and go through the winter without the use of a remote.

Jan 24, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Remote Garage Door Openers won't work

Does your wall console have a LOCK or VACATION setting. Turn off.

Dec 13, 2008 | Sears Craftsman LiftMaster Chamberlain...

Not finding what you are looking for?
Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+ Logo

1,558 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sears Building Materials Experts

Glenn Mayer
Glenn Mayer

Level 2 Expert

91 Answers


Level 3 Expert

4345 Answers

Cindy Wells

Level 3 Expert

5304 Answers

Are you a Sears Building Material Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides