Re: can't connect to camera
Mine is doing exacty the same since the update to 4.3, might well be a software problem I suspect, as you found a factory reset has made no difference whatsoever.
Having said that just spoken on the phone to google and they're RMA'ing the unit, that makes three nexus 10's in as many weeks as my first unit had a hardware problem stopping it from charging correctly, not very impressed with the Nexus experience to date!