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

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I have a Liftmaster 1/2 hp garage door opener that was already installed when I bought this house, but I had no remote devices, so I bought two Chamberlain universal remote openers, which seem to work fine. The door opener has lately developed a problem in that suddenly, whether opening or closing, the lights will flicker and it will stop moving and then it goes off, like the power to the unit stops. It doesn't really, though, but something in the unit must be loose, if I bump the unit, or pull down too hard on the release even, the lights/power will return, only now it returns only for a moment. I also added a universal keypad opener also, which was working fine.

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You are going to have to get in there and find your problem. There isn't a common answer for this.

Posted on Mar 31, 2011

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1 Answer

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Single button remotes can be purchased but currently most garage door openers are sold with the 3 button versions. http://www.liftmaster.com/consumerweb/products/pflRemoteControl.htm

I hope this helps.

Cindy Wells
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If the wall button will operate the door up but none of the devices do then look at the wall button. Find the lock button and push it for 2 seconds and then try the remotes again. This is your vacation lock. You can get a manual at chamberlain.com. Now if the door does not open or close with the remotes you can reprogram them. Press the colored learn button on the motor head and then press the button on the remote. Repeat for each remote. If they fail to program you will need a new logic board. Thanks BB

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