I have a P3 4k that had a shorted wire to the camera from the main board. I replaced it but still no camera. The bird did fly ok but of course no Go app because there was no camera. I replaced the main board and now I have full camera operation and the Go app,. However the Go app shows weak Wifi and it gives no IMU and of course now won't fly. I was able to set my wifi as the phantom so I am confused. Did I get a bad main board or is there something else I should be looking at?