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

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Sears garage door opener (GDO) model 139.53985D, only a couple of years old. 315MHz remote controls. Opener has stopped responding to the remote controls,unless a remote is held wihin 12 inches of the opener. Controller board and remotes have been replaced, same results. I've shut off all circuit break switches to my house, also no improvement. Problem has been looked at by two different GDO repair services; neither could figure out how to correct this problem. Assuming some interference, is there any way to change the 315MHZ frequency to a different frequency?

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There is no way to change that radio frequency it is set by the government. Sears service technicians have an instrument to help them locate the interference that causes this type problem.

Posted on Oct 18, 2010

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