I hope someone can help. I recently had a small crash landing which pulled out the battery thus pulling off the battery leads from the main board. When I got it home I soldered the wires back on in the correct place and then linked to the computer. The problem now is the Rx unit inside the phantom is not receiving a signal from the controller. Is the a part I could buy and where can I buy it. (UK) Am I right in saying the power should be around 5.5V for the small board to work, because that's what is being supplied from the NAZA unit. When linked upto comp it tells me there is a CFG ERROR and tells me to calibrate the controller. I have tried to link them up with the button inside but there is no red LED in there. Thanks for any help.