If you have edge markings, the film was apparently developed properly. If you opened the back of the camera, and when you fire the shutter you do not see light when it's pointed at a light source, it's either that the mirror is stuck down, or the shutter is malfunctioning (even if you see the shutter moving, you have to see light when you fire it, assuming the mirror is going up). If the shutter speeds are all the same even when you change speeds, the shutter is malfunctioning, even if your mirror is going up and down.
You basically need another camera. Getting yours fixed is not worth what another one costs. I would buy from KEH, as they guarantee the cameras and will take a return if there's issues.
Last edited by momus; 06-21-2014 at 05:13 PM. Click to view previous post history.