i have the following setup
Quad F450 frame
5000mah battery
1400 kv motors
10*4.5 props
APM 2.6 Clone
Neo-6m gps/compass
HLW XXD 30A ESC
turnigy 5x transmitter
i have followed all the steps from loading firmware to calibrating ...
first test flight worked fine ..
but for second test flight after arming 1 motor is not spinning and rest 3 are spinning correctly..
After giving little throttle the motor which was not spinning starts spinning ,but with less speed as compared with the other 3 motors..
I Have checked each of the motors during calibration and they work fine.
i have gone through setup once again but the problem persists... please help..