MInolta x-300s film camera - shutter will not work (by 3 users)

hi there , I have the same problem with my x300s , I have had it for a short while it was working fine , then I have had it stored for a few months , now I need to use it it seems like the shutter is stuck , all the lights work as normal , what can be wrong , can anyone assist me here.

I'm not sure which model I have, but I bought it around 1995-96. After about 2 years, I changed the film outside. That film when processed was black except a small strip at the top. The louvers (I'll call them that for lack of a better description) were half in and half out on one of the sides. I carefully placed them on the lens side (or inside). I don't think I ever tried them the other way (door side). Is this what it might be or how can I get it fixed. I am about 45 min to a hour from larger cities. Thanks in advance for anything you may can help me with.
J Simmons