Hi,

I am new to this so forgive me if I have posted a number of times without knowing.

I have a sears craftsman garage door opener model #139.53681B. The other day, the garage door would not open so I changed the battery. The garage door still will not open. I have recently moved into this house so I have no manual. (Sears is no help in getting another one.)

Does anyone have any troubleshooting ideas before I call the technician to come out?

Thanks.