Craftsman 1/2 HP Garage Door Opener - Resetting?
Craftsman 1/2 HP Garage Door Opener - I have misplaced (or it was stolen) my second garage door opener and the instructions so I'd like help resetting, if I'm able to, a Model 139.53681B with 3 blueish buttons, I normally use the big the button to open and not really sure what the other 2 buttons do (a medium round and a small round).
Can anyone help me please? I had purchased/installed the unit in 2004.
(I apologize if it's in a thread ... I tried to find the answer and couldn't find it)