The buttons to the left of the screen on my Nikon D80 have stopped working. when pressed the battery icon blinks. The camera still works, autcocuses etc. but I cant preview the screen, get at the menu or iso. Anyone any ideas. I had the lead in to view pictures on the computer. I removed it from the computer and still had the lead connected to the camera. I tried to view the pictures but it didn't work. I took out the lead but still didn't work. i have tried two seperate fully charged batteries but no joy. Anyone know if there is a fuse or a seperate small battery.