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

1 Answer

We close our garage door when we leave and we will come back home and it is open. Sometimes the time frame is a long time, other times it is a short period of time. We want to change the codes but there is nothing in the Manual that tells us how to do this. Can you help? M. Pratt

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Contributor
  • 504 Answers

Anytime a door opens and/or closes by itself I look for a smashed wire between the motor unit and the wall button.

If the wire is smashed the insulation becomes so thin that power will leak thru the insulation and activate the door.

Loosen the staples with a small screwdriver and slide the wire about ½ inch to move any areas of thin insulation away from the staples.

The second thing would be a bad wall button or a remote with a sticking button.
Or a remote in someone’s purse that gets the button pushed by other stuff in the purse.

The test is to disconnect the push button wires at the power unit. If the self operation stops you have located the problem. If you reconnect the wires and disconnect the wire at the wall button this will tell you if the problem is the wire or the button.

HOPE THIS HELPS

Posted on May 29, 2010

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
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.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Garage doors opens on its own, after being close for hours


Someone in your neighborhood may have the same garage door opener that you have and sharing the same code. Change your garage door opener code or buy a Genie Code Scrambler.

Apr 05, 2014 | Genie Garage Door. SilentMax 1000 3/4 HP...

1 Answer

Liftmaster 3265M Garage Door Opener opens on its own


Sounds like one of your neighbors may have recently replaced their own garage door opener and it coincidentally operates in the same frequency band as yours. One of them may also have purchased a new car and recently programmed it to open their door, but it inadvertantly interferes with yours. Depending on the quality of your door opener's receiver and how old it is, some receivers are not as good as others in their ability to discriminate against similar transmitted codes in the same frequency band. When the door opens by itself immediately go outside and see if a neighbor's door has just been opened (or closed) at the same time. Does your door open by itself at similar times during day? Like when a neighbor might be leaving or returning home from work? When someone uses a remote to close their garage door when leaving home, they (and the remote) are usually located in their driveway, but when they use it to open the door upon arriving home, they might be located right in front of your house.

Nov 25, 2012 | Home Security

1 Answer

I have a LiftMaster garage door opener. It has started to act up a bit, and I can't seem to locate the problem. It opens just fine, but when we try to close it, with either the remote or the wall control,...


If the opener feels any resistance it will act like this.Make sure that the rollers on the door to frame are oiled well and turn easily, move in and out easily as well, you can also turn the screw to increase the resistance stop pressure.Oil the rollers well

Jan 22, 2011 | liftmaster Chamberlain Garage Door Opener...

1 Answer

My remote intermittenly opens/closes the garage door


You can find a free manual for your door opener at manualsonline .com You might want to look at how to program it and change the unit to a different frequency. You can sometimes get better response and eliminate interference. Also make sure your battery contacts in the remote are clean.

Sep 26, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Genie garage door comes down and goes back up.


You need a general inspection of all related parts. Make sure none of the track mounting bolts have loosened leaving a misalignment of track segments. CAREFULLY with power off use fingers. turn EACH roller. Something as simple as a bad roller bearing can cause this, even a flat spot on a worn roller. Rollers can be bought at a home supply store. These are 2 most causes.

Aug 15, 2009 | Genie Company Genie 34538S Chain Glide...

1 Answer

Craftsman garage door opener trips the GFCI


When garage doors get sticky, bent, and the chain needs lube they will trip the controls. A door may suddenly reverse for no apparent reason, that is friction. A GFCI is real sensitive to load. Also check the wiring to the unit. Any bad connection will upset the GFCI. Check all the way back to the breaker box, sometimes the screws on the wires need to be tightened.

Apr 28, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Starts and stops, must push button several times


i would guess that the batterys need to be changed? is it extremly cold were you are as that can affect the doors performance

Jan 19, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Opener operates on its own sometimes


maybe a short in wall wiring is causing motor to overheat and shut down for 15 minutes. try disconnecting wiring to wall pushbuttons and see what happens.

Dec 24, 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

45 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sears Building Materials Experts

Mike

Level 3 Expert

4334 Answers

Cindy Wells

Level 3 Expert

4950 Answers

Brad Brown

Level 3 Expert

15119 Answers

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

Answer questions

Manuals & User Guides

Loading...