Crashed P3 problems after repair

[petr22]

Hi, I have crashed Phantom 3 Advanced for repair - one damaged arm and broken gimbal arm flex cable. Broken gimbal arm is replaced, flex cable is replaced, but Phantom 3 does not start correctly:

- both front arms LED does not work
- both rear arms LED blinks normally
- gimbal start blinking green, then red and restarts itself
- camera does not move
- there is no picture from camera

- there is nothing displayed on sensor screen in DJI APP, no data
- gimbal gyroscope error message
- no other errors visible in app
- when cable is disconnected from gimbal motors, it display error message about motor
- starting motors is not possible, take off command fails

Arm LED off can mean ESC is busted, but there is no visible damage to engine or any other component on ESC board. There is a possibility main problem is there are no data from any sensor - IMU, gyroscopes, compass, anything.

 

[hunch]

where are you located?
if in US you can send it over and i can go over it. you listed a lot of different possible factors. it will be hard to determine online.