I have a minolta maxxum. I have a minolta maxxum 7000 camera that will not trigger (snap the

Question

I have a minolta maxxum 7000 camera that will not trigger (snap the shutter.I've tryed 3 other lenses but it does the same with different lenses.It will auto focus when the shutter release button is pressed half way as it should and the specs show in the display area through the eye view.But when the shutter is pressed all the way down nothing happens.All the specs go away too(iso,f stop,film count etc).Any ideas?