My first-generation Nikon D70, which I bought the day it was released to the market a few years back, died on me a few months ago. Without a card in it, it won't start, and when you insert a CF card in the slot, the green data-access indicator flashes on and off. If I hold down the Menu button, the menu flashes on and off along with the green LED.

As it turns out, this is a known problem with the original Nikon D70 cameras, and Nikon USA has a service bulletin out on the camera body. They'll repair it free of charge.

So, if you have the same problem, visit this service bulletin page, click on the D70, and you can access a PDF file that you'll need to print, fill out and send to Nikon along with your camera body. Be sure to take your camera strap off and remove the battery, and don't send any lenses or other accessories.

Mine's on it's way to Nikon now - they say the turnaround is five days (plus shipping time).