This vehicle has failed a pre arm check. In the order to arm the vehicle, resolve the failure.
Does anyone have a clue as to what needs to be done in this situation?
An initial beep sounds on battery connection - Video is present. At times, I do get a secondary beep and can do some pre-dive checks when armed. So intermittent failures.
What is the CPU status in the companion system page? I it shows under-voltage, maybe you need to replace your BEC or check if something is draining too much power from it.