So I was flying my Phantom and lost the signal, so it reverted to "return to home". Brilliantly, it decided that meant it should land in a river. Thankfully it chose a shallow spot so it was only submerged to above the camera, not the whole way. I dried it out and powered it on, all four green leds on the battery are flashing and the light on the strut is red. The camera was moving but not now, nor is there video. Fault battery or worse?