Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+
Four times lately we left and observed the garage door closed. returned several hours later to find the garage door open !!!!!!!! HELP
CAN WE CHANGE THE CODE IN THE EVENT SOMEONE ELSE ON OUR STREET HAS THE SAME CODE ?
Well you should first try to erase all codes in your opener so that way no remotes will work for it. next close your garage door (so if some has a remote that is not authorized to have one will not see what you are doing. next get a ladder and get to the back of the opener motor head. their should be a red square button, press and hold it, note that when your holding the button an orange light will illuminate next to the red square button. continue to hold that button until the light turns off. test your remote to make sure that it does NOT operate your garage door. next press and release the red square button aka the LEARN button and the orange led should illuminate once more press the desired button on your remote control and the opener lights should blink. or click if no lights are installed, one time. repeat for additional remotes!
Posted on Oct 24, 2009
I had the same problem. Turns out that everytime the neighbor used his opener, my door was affected. When I used my opener, it did not affect his door.
You can buy an external radio for your opener. Genie has a unit for sale at home depot. Basically, you cut the antenna wire off of your opener to diable the receiver. The new radio triggers by connecting to same contacts used for the garage door button on your wall. Presto.
HOWEVER, by the time you buy the new radio and some remotes, you almost paid as much as a new opener that comes with several remotes. However, if you are not inclinded to install a new opener, then I suggest the external radio.
Posted on Jun 26, 2009
I was experiencing problems with my
garage door opener 6 years ago.
At random times, my garage door would just open by itself.
I found out that the radio receiver in the door opener (Craftsman), was very sensitive.
So I coiled the wire that hangs down (antenna), with a pencil.
This will leave a cute little "pigtail" coil when you remove the pencil.
Now, the effective range is to the end of my driveway, and no further.
People need to be aware that when they get a new opener, whether it's a built in on new vehicle, or new remote, when you program it into the opener, ANY other opener in use and in range will be programmed into the door opener.
So, mornings and early evenings are a bad time to program a new remote for the door opener.
Mornings and evenings correspond to times when people are leaving for work, or arriving home from work.
Be aware of people near your house sitting in their car and watching you leave. Aparently, there are receivers that can record RF emissions from a door opener. How they reproduce the rolling code, I have no clue. When in doubt over "visitors" in your neighborhood, WRITE DOWN the license plate number if you can.
Hope this helps.
Posted on Nov 12, 2008
Do any of you having this problem have FIOS service installed in your home? If so you need to call Verizon so they can move the ONT away from the garage unit. Most of the time this happens if the ONT is on the inside of the garage. The ONT put out a frquency that will open up garage doors specially sears chamberlain....Hope this helps...ohh also make sure the power cord for the ont needs to be on a separate outlet from the plug for the opener...this can also cause doors to open...
Posted on Nov 11, 2008
Here is the manual, so you can change your code. This should FixYa:) Let me know if you need more help!
Posted on Nov 03, 2008
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.
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click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
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