Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+ "41a5021 3" Questions

Question about Sears LiftMaster Building Materials

I replaced my logic board 41a5021-3c with

...41a5021-2g and the sensor beams are not being powered so the door only wants to go up. Do I need to do something special. This was the reccomended replacement board. Either you got a bad board or you ...

Question about Sears LiftMaster Building Materials

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41a5021-3e Yellow light on back flashing, and the

41a5021-3e Yellow light on back flashing, and the remotes do not work. Tried to reprogram but still no luck. Random flashing of that light is normal. Rapid flashing is a sign of interference. Make ...

Question about Sears LiftMaster Building Materials

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We had a 1/2 horse opener with the model #

41A5021-3C in our garage .I put up another opener 41A3621 .Would like to know the wiring for the sensors and wall switch openers..The courtesy light comes on and the green light flashes on one side of

Question about Sears LiftMaster Building Materials

1 Answer

Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+: I have a Craftsman garage door opener 1/3hp chain ...

...41A5021-3E The garage door doesn't work with the remotes. I replaced the battery in one thinking that was the issue then the next day it didn't work again so I unplugged the battery and plugged it ...