"Mine was off brand as well. I checked continuity on all the signal pins and found ch 4 and ch 5 were shorted! I sent it back and bought 3Dr board and everything works as advertised!"
Ok gang, I have spent the last three days trying to research this issue. I have APM 3.01 firmware and 2.5 board. Everything loads and all the calibrations work perfectly except the radio. I am using a Spektrum DX8 and AR8000.All receiver channels…