Well, I opened up the mouse, and checked the +5v. It's at .7v, so I removed the caps and isolated the power pin on the 339 comparator. The voltage went up to 2.3v. I stilll can't tell if the ir leds are working, they don't meter bad. Is there any way to tell if the ir recievers are ok? The voltage at the computer without anything connected is 5v. I think I read that it only sources 50ma. I've got another mouse coming so I'll probably just wait and make sure the computer is sourcing enough via the new mouse.
Kipp