Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+
You can't change the channel but here are some things to look at.
Look at the LED light next to theSMART/LEARN button on rear of the motor unit. You may need to removea light lens cover in order to see it. If the light is flashingrapidly this means you have a stuck button on one of your remotecontrols. Take the batteries out of each remote control. When youremove the batteries from the bad remote, the light will stopflashing. This remote needs to be replaced.
If one of your neighbors remotecontrols is inadvertently programmed into your receiver, you doorwill open when their remote is activated. If this happens you willneed to clear out your receiver and reprogram your remote controls.Press and hold the smart/learn button for 6 seconds or until you seethe small LED light near the button turn itself off. If the abovesteps have been followed and the symptoms continue, there may be anelectronic short in either the wall control button or the receiverlogic board. In this case, remove the wall control wires fromterminals 1 and 2 on the motor unit. Should the symptoms persistafter the wires are removed, replace the receiver logic board. If thesymptoms stop with the wall control wires removed from the motorunit, replace the wall control button, and the wires leading to thewall control button.
Posted on Jun 07, 2010
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Posted on Jan 02, 2017
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