it is a craftmans garage door opener mod. no.139.536611srt2 batterys in the remote are new.
First lets erase all old codes out. Find the colored learn button on the back or side of the motor unit. Press and hold this button down until the led light by it goes out. This erases all old codes.
////Now press and release this same button and then press the button on the remote. The light bulb will flash once if the code was received. For multiple remotes repeat from////. If the light bulb does not flash or it does and the remotes don't work or you program one and when you program the other it stops working, then you need a new logic board. You can get one at sears.com. Thanks BBMember
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