I recently purchased a Canon A-1 with a couple of lenses and on first inspection it seemed to be in pretty good condition. However, now when i fire the shutter stays open for an unusual amount of time, no matter what shutter speed I have it set on. At first I thought it might be the battaries but after switching them I still incounter the same problem. In some cases I have to press the battery test button just to close the shutter. If anyone could shed some light on my problem that'd be awesome. I just want to know if I'm making some stupid rookie mistake before I take it into a repair shop and they point out my stupidity for all to see. Cheers.