Phantom 3 Standard startup

Not able to get my phantom 3 standard drone started. Just bought it second hand. All lights are green except the front lights on the drone. Battery, aircraft, remote controller and safe to fly in app.

Using Samsung A10s.

The front lights are not the case of the problems, you can switch on/off. The callibration set up is done, your controller is conected/ green light. Start!

Nothing? the EC has power? EC Power control board broken?

Thanks for the reply. How will I be able to see if EC board is broken? The Gimbal moves when using controls to move themhence my thought that all electronics are fine.