Mike-
I'm not sure what to say about this. If removing the battery and using a new disc doesn't fix the problem, I'd toss the cameras. The image quality of those floppy disc Mavicas is so poor and they're so huge that I'd say it's best to do the world a favor and put them to rest. I certainly don't think it's worth the money or effort of fixing them. I hope that doesn't seem to insensitive to you. But you can can get far, far better digital cameras now for under $100. Time to let those suckers go.