Sounds like the electronics have finally given up. Unfortunatly, as much as we wish they did, these dont last forever. You could spend your money at a repair shop(if one exists), or find another similar(or whatever)camera. Personally, I have two XA's that I'm deciding whether to keep or sell. They both need seals, my XAII has dirty battery compartment. I haven't used either in years, and I'm trying to figure out if I really miss using them. Well, anyway, if you have another camera, keep shooting. If not, better get another soon, that way you wont go into withdrawel and start jonesin' for a digital!!!
Rick