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

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Changed the batters in my remote it worked one time then stopped and not does not work at all except the button on the wall does work .........Help !

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  • jarrett08270 Jan 12, 2009

    same issue, the wall opener inside the garage works fine but the remotes stop working when the weather gets cold. We just changed the batteries so I know that isn't the issue plus the remotes work fine on warmer days.

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You can keep changing batteries! Seriously, do you have other remotes. do they work? do you have a LOCK or VACATION switch on wall control . turn it off.

Posted on Jan 15, 2009

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Anytime a door opens and/or closes randomly or doesn’t work consistently 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 or interfere with the remote signal.

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 / interference 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.

In your case the expansion of the wall in the afternoon may be enough to cause pressure on the wire to increase the problem – works in the morning but not the afternoon.

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