When turn on power gimbal activates like normal and aften I had soldered the 7 pins (See photo below) it can connect aircraft to RC but still beeps and after af few min. one motor starts up and after a few more min. two motors are running - a few more min. and the beeping stops and the flashing red LED on the mainboard changes to a solid green light - after 40min. alle 4 motors are running and this scenario running 1-4 motors in different combos last until no more power after 2½ hour??? I hoped this was a calibration of the motor speeds, but it still starts with the beep when I put in a fresh battery. What could be the problem? The black box and GPS also got hit hard and maybe my soldering is bad.