pegasusjan said:
Anyway when there appears a fault you never know how the bird reacts.
In my case i was lucky i could control the motors , enough for an emergency landing
When there were trees or buildings i had a big problem, probably the bird crashed in a tree or a building
You keep repeating that you only could control the motors. You must be aware that there are no other controls inside Phantom beside the motors. For example, there is no mechanism to shift some weights back and forth inside it to produce forward or side movement. Everything is controlled by the motors. For example if both rear motors run faster than the front motors you move forward.
If you ascend and descend then all motors are running at the same speed and that is basically evidence that the motors are fine and the ESC boards are fine.
That is why it is strange that you had up-down control with your left stick(throttle) and nothing else.
That is unusual and many probably believe that because of it you probably had control with other commands, you just did not realize it OR that your phantom triggered an auto land procedure for some reason. That could happen for some of these reasons: GPS sats bellow 6 and simultaneously loosing the transmitter(RC) signal, low battery, faulty battery.
On that note, I remember somone(maybe even more than one person) telling that when he got auto land triggered. That he could slowdown/pause the descent with pushing full throttle up on the left stick.
Maybe really during an auto land procedure only the throttle stick is working.
That could easily be tested by letting one battery get depleted during a flight which would trigger an auto land. Then testing what sticks are working.
Did you by any chance see the LED lights on your phantom when that happened? Any yellow or red blinking at the back?
Also there where issues with the latest upgrades, did you download the latest Assistant software? On what date did you upgrade? DJI made some changes to the Assistant/Firmware without changing the version number on at least one occasion.
So if you didn't recently completely reinstall the whole Assistant there could be a chance that you forced a battery firmware upgrade on a battery that doesn't support it. That would be completely DJI's fault