Sorry but you are out of luck. I sent mine into Nikon service ten years ago, they returned saying, camera no longer supported and no longer any parts.
My shutter had apparently packed in, incredible after only putting a dozen rolls through it since new. It was an $1,100 camera when introduced, I paid $550 for the little brick.
All four of my Nikon cameras have been lemons, my Leicas, Hasselblads and Rolleiflexes have never failed me. Electronics are always the issue.
Notice how they spit out new cameras like German sausages. Before the electronics age a new Nikon model came around every four years if you were lucky.