On Jul 16, 6:25*pm, "John F. F." wrote:
Hi all

Does anyone know howto change the code on *a very old Sears garage door
opener. It is the super old style where you have to press 2 buttons on the
transmitter to open or close it. *Has to be proibably 25 39 years old. * The
remote only has one bar you press to activate it. *Thanks. * Happy summer
John

The oldest ones I had used to use dip switches
inside the remote and inside the receiver.