This happened on my Phantom 2 v2.0. I fly this with a Zenmuse, GoPro & FPV. Over time, the antenna wire wore through the protective layer on the central circuit board (see pics below). This happened while I was flying, my Phantom lost all GPS satellites and became hard to fly. While I was trying to land it, I noticed the rear lights were solid red. Swapped out many parts before noticing the circuit board had what appeared to be an electrical burnt area. I was able to swap parts from an older Phantom 2 and that's how I confirmed the problem. I did put a piece of electrical tape and I noticed the other board had a DJI sticker right where the wear point is. Bottom of Phantom central circuit board shows signs of wear: Antenna connector on left also shows signs of wear Following two pics shows how the two areas line up. Where it wore through was on the battery positive side heading to the motor ESC. I think it was not a continuous short, but brief enough to mess up the electronics on the central circuit board. I bought this Phantom 2 V2.0 back in April 2015 and have never crashed it, only to find a flaw in DJI's design that almost caused me to have a not so perfect flight record.