You may even want to consider buying another one from eBay as they go pretty cheap. Although i fully understand wanting that one fixed for sentimental reasons. I'm not in the business of fixing cameras, but as a collector i have had quite a few Minolta's apart for repair and they are complex inside. Make sure the self timer is not stuck halfway through it's cycle. If my memory serves me correctly when that is stuck the shutter won't fire and it won't advance if the shutter is already cocked.