I have a Sears 1/2hp garage door opener that has no passcode reset button. Any Idaes on how to change my passcode. I have a 139.53876 wireless keypad.
What is the part number of the GDO?
Do you still have the owner's manual? It may be available on-line from SearsParts.
Their 1-800-252-1698 help line might be of assistance.
Locate the smart/learn button on the rear of the motor unit near where all those white wires go. Press and immediately release this and then walk over to the keypad and key in any 4 digit code you like and press enter.