Remote opener for OH door model 556

I lost my garage door remote opener. Unfortunately, this is a detached garage, I.e. Garage by itself with no door or windows to get in beside the garage door itself. I can buy a new garage door opener but without being able to open the garage, how can I reprogram this new opener to open my...

Help! Can't find owners manual to Craftsman 1/2 remote garage door opener. I believe I accidentally erased codes from garage ceiling unit. There is a learn button, I know how to change the code on the outside keypad, but how do I reprogram the unit on the ceiling of the garage to accept the new...

I have an "Overhead Door, Model 656 Garage Door Opener" and I ran over the only remote I have. I bought a universal opener that turns out not to be so universal. I want to try resetting the dip switches, but I can't find them. Any suggestions? Thank you.

My garage door opener doesn't work. The wiring is inside the wall and to fix it I would have to tear out a section of the garage wall. I'd have to call an electrician. So I've been using the remote in my car, but it's a bother. I bought another remote from ACE hardware just like it but apparently...

I purchased a home with a Craftsman remote garage door opener that is outside the garage. Model # 139.53876 with push bottons 1-0 (no # and no *). I know the old four code number but need to know how to change the code with a new code number.