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

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Garage Door Remote Openers Stopped Working Suddenly

Garage door works fine, but remotes all quit working this weekend, all new batteries so that's not the problem...

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Check the wall control. If the small green light is blinking press and hold the button with the lock icon for 3 seconds.

Posted on Jun 01, 2009

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Posted on Jan 02, 2017

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1 Answer

Garage Door Remote


Did you happen to put a new light bulb in it? I put an LED bulb in mine and the interference caused the remotes to stop working. I had a bear figuring it out, because it seemed to be totally random. Sometimes they would work and sometimes they wouldn't. Once I switched back to an incandescent, it worked fine.

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I have two craftsman garage door openers and the remotes, wireless key panel and my built-in car remote all stopped working for both openers. I have tried resetting the remotes, but the openers do not...


If this all happened at the same time you have either had an electrical storm that cooked your logic boards or you have something in the house or garage that is interfering with the radio signal. If you added something new it should be obvious but this can happen at any time with older electrical gadgets. Check the LED on the rear of the motor unit. If it is blinking rapidly it is showing interference. Start unplugging until it quits. It could also be one of the remotes. Watch the LED and pull the batteries from them. Random blinking of the LED is normal.

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1 Answer

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There is nothing to do beyond what you have done. You need to get a new keypad. Make sure you get the same model as there are some out there that will not work with your opener.

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Remote control for garage door suddenly stopped working.


Press and hold for 3 seconds the button on the wall control with the lock icon. There you go.

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it is possible that when you programmed the car remotes you erased the pairing between your hand held remotes and the unit. Follow the instructions to pair the remotes again and you should be good to go.

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check to seee if the little wire that hangs out of the operator is hanging out. This wire is the ant. if this is not the problem replace the 12volt battery you can buy them anywhere. make sure you didn't cut off the ant. wire (I have seen customers cut thios wire thinking its an extra and not needed or place the wire inside the box very little signal that way have to be very close)

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1 Answer

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check to see if your ant. is up inside of the cover it's a little black wire that hangs outside of the operator shiould be about 6 inch.

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The radio frequency has been changed so the two are not compatible.

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1 Answer

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

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