I have a Model 139.53661SRT3 garage door opener. I am only able to make one or the other of the two remotes to work. Also the one that is working will open the door about 18 in. for about 3 tries than work all the way. I had the same problem this morning with the wall switch.
I am sending you an answer from our database that will explain why you can program either remote but not both at the same time. The correct part number for the remote for your garage door opener is 53681. Check the part numbers on both openers and the color of the buttons.
To check the problem with the door only going 18 inches at a time you should check the rollers and friction of the garage door. There is a rope hanging down from the trolley of the garage door opener. Pull the rope and it will release the door from the garage door opener. Close the door before pulling the rope as the door could close quickly when the trolley is released. Open and close the door several times to see if there are places where it gets hard to move. There may be a problem with the springs or the rollers on the door.
If the door moves easily then there is probably something wrong internally in the garage door opener and you should get a technician to diagnose and repair the problem.
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