Quick question. I just bought the Fuji GA645Zi and have had the same issue loading 3 rolls of film. I load the film no problem but when I turn on the camera it immediately just rolls out the entire roll not even letting me get one shot off. I have no idea if I have some weird setting on or why it's doing this?? Please any help would be so appreciated.
I have this camera and had never an issue with it. When the back is open, you have to turn the dial a few times until the arrow is in the middel of the image frame. But I think you know that.
After closing the camera and switching to On it forwards the film to the first image. I see no mechanical "sensor" like at the Flexes so I assume the camera "sees" the film. You may find some kind of lens in the inner. Mine is loaded so I cannot look for it at the moment.
I, too, have this camera (for many years and rolls of film) and never had this issue from a single roll. Sounds like the camera is simply not sensing the beginning of the roll; and, I really don't know how/what does that. I think you're right that, perhaps, a good repair person needs to look at it.