My Phantom 2 was working perfectly the last time I put it away, but now when I try to power it up (one push on the battery button, followed by another 2-second push), nothing happens. No sounds, no lights (except those on the back of the battery) -- nothing. I've tried several different fully-charged batteries, and none will power it up. I looked at the contacts on the batteries as well as in the Phantom, and all are bright, shiny, clean. It's as though the battery isn't connected to the Phantom at all. Is there a fuse inside the aircraft that would have this effect? Anything else I could try? This is a Phantom 2 with maybe 20 hours of flight time on it, never had any problem starting it up before, no crashes.