Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+
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Posted on Jan 02, 2017
On the rear of the motor unit just to the left of all those white wires you will find a small LED. Random flashing is normal but if it is flashing rapidly it shows some type of interference. If this isn't happening then the most common thing is a logic board going bad.
Posted on Sep 01, 2009
Some will work and some wont. If you go to this website it will tell you.
You must have the model number off the motor unit of your opener. It is on the end closest to the door and starts with 139.
Go to this website and find your model number in the left column. The second column is the model number of the Liftmaster remote that works.
Posted on Feb 09, 2010
This may help.
If you look on the back of the motor head, where the terminal strip is located, you will either find a set of numbered switches (1 through 9) with +, 0, - settings, or a colored square button. If you have the numbered switches, you want the 61LM model transmitter. If, instead, you have a colored, square button, check to see what color the indicator light, adjacent to this button, emits when it is pressed. If the indicator light is the color green, you want the model 81LM remote transmitter, if the indicator light is an amber color, you want the model 971LM transmitter.
Posted on Feb 22, 2010
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