Craftsman 139.53629 remote problem
My remotes no longer open the garage doors properly. I have 3 doors. The doors all open with the manual switch on the wall. One door operates with a single remote. When I clear the unit's memory and try to reprogram, i get only a flashing LED on the unit; it flashes about 10-12 times before stopping. One remote operates the central door, the other remote cannot be programmed to operate the central door. The 3rd door does not operate from either remote. I have not tried the 1st door recently.
Thanks in advance for sharing your expertise.