Inside the battery compartment in the grip there is a Ni-Cd / LR 6 switch. Assuming that you are not using Ni Cad batteries is the switch set to LR 6?
With the shutter speed dial set to "T" try rotating the shutter speed dial to another shutter speed then lightly pressing the shutter release button again. That should return the mirror to the down position and advance the film to the next frame.
Is the film in the camera DX coded? If not or if there is no film in the camera pressing the shutter release button will cause the Alert LED to blink and the shutter to Lock. Try setting the ISO manually. Good Luck and Enjoy your Nikons!