Shutter will not release
Why won't my shutter release when I try to take a picture?
The Minolta Maxxum STsi SLR is a film camera released in 1999. It features several automated and manual modes of operation.
According to the user's manual, it's probably waiting for the focus to settle. If this isn't happening automatically when you press down on the shutter button gently, you may have to use manual focus (there should be a switch on the side of the camera).