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PROBLEM - Gimbal shaking at start
701 20 2018-7-18
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ThePhenix33
lvl.3
Flight distance : 1894797 ft
France
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Hello everybody !

I encountered an issue since 2 months on my drone Phantom 3 Standard. At each starting (without RC and app on) of the drone, the camera's going crazy for 10seconds then restart the drone and finally get normally initialized. I've recorded it, take a look :


I didn't crashed my drone, i'm trying to be as safe as possible. I went on a trip on May, and as far as i remember the issue was already present before i go. On the place, the problem occured into multiples flights, which had stop the video i was recording. I also miss landed my drone because of wind, he did a "backflip" when it was quite landed (it was on the ground), but the wind pushed him onto a rock which blocked it and then it was on the back, so a ground backflip.

So actually, the problem is still present, i don't know what to do. Do you have any ideas ?

Thanks,
YB.


2018-7-18
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DJI Natalia
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Hi. Sorry for the trouble. Can you please try to calibrate your gimbal? For reference, please check the video tutorial below. If you have further question, please let us know. Thank you.

2018-7-18
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ThePhenix33
lvl.3
Flight distance : 1894797 ft
France
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I did it and nothing had changed :/
2018-7-18
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DJI Natalia
Administrator

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ThePhenix33 Posted at 2018-7-18 10:19
I did it and nothing had changed :/

I highly recommend you to send it in for repair so we can asset and analyze your aircraft. You may use this link for online repair request: https://repair.dji.com/repair/index.

Again, we do apologize for the inconvenienced.
2018-7-18
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ALABAMA
Captain
Flight distance : 10356965 ft
United States
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Looks like your grub screw at the top of the arm has worked loose. Turn the drone upside down, move the arm to one side and tighten with a  small allen.
2018-7-18
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ThePhenix33
lvl.3
Flight distance : 1894797 ft
France
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You mean this one ?
IMG_20180718_213358.jpg
2018-7-18
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ThePhenix33
lvl.3
Flight distance : 1894797 ft
France
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Oh rather this red one ?
IMG_20180718_213725.jpg
2018-7-18
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ALABAMA
Captain
Flight distance : 10356965 ft
United States
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Yes, you have the correct one circled in red.  Make sure it's tightened on the flat side of the shaft.   Let us know if that fixes it.
2018-7-18
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G_Sig
Captain
Flight distance : 5975574 ft
Iceland
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ThePhenix33 Posted at 2018-7-18 10:19
I did it and nothing had changed :/

You should not start it up with the cap on the camera. It's out of balance that way.
2018-7-18
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ThePhenix33
lvl.3
Flight distance : 1894797 ft
France
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Hello ! Today i've tried to tight the grub screw, but it looked already tighted so i didn't forced. I did the gimbal calibration again, without the cache.
However, the problem still here. :/
2018-7-19
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stuka75
First Officer
Flight distance : 85682 ft
United States
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G_Sig Posted at 2018-7-18 14:41
You should not start it up with the cap on the camera. It's out of balance that way.

As he said, remove the lens cap. And turn on rc first, then the ac.
2018-7-19
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ThePhenix33
lvl.3
Flight distance : 1894797 ft
France
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I said I didn't put he cache/cap on while the calibration. I know how to turn on the drone, and anyway how i do it the problem is still present.
Do you have other ideas ?
2018-7-20
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G_Sig
Captain
Flight distance : 5975574 ft
Iceland
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ThePhenix33 Posted at 2018-7-19 13:09
Hello ! Today i've tried to tight the grub screw, but it looked already tighted so i didn't forced. I did the gimbal calibration again, without the cache.
However, the problem still here. :/

Look if the flat cable connections are fully seated.

2018-7-20
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ThePhenix33
lvl.3
Flight distance : 1894797 ft
France
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I've pushed these black connections and they look like correctly seated.
2018-7-20
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ThePhenix33
lvl.3
Flight distance : 1894797 ft
France
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So nothing had changed :/
2018-7-21
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G_Sig
Captain
Flight distance : 5975574 ft
Iceland
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ThePhenix33 Posted at 2018-7-21 10:24
So nothing had changed :/

Is there any message in the app?
2018-7-21
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G_Sig
Captain
Flight distance : 5975574 ft
Iceland
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ThePhenix33 Posted at 2018-7-21 10:24
So nothing had changed :/

Maybe you could look at this
2018-7-21
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ThePhenix33
lvl.3
Flight distance : 1894797 ft
France
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Hello, sorry for the delay !
No warning/message on the app.

What's strange is that the issue occurs sometimes, not at each starting, sometimes yes sometimes not.

I've checked today the yaw motor as explained in the video, and it was okay, as the roll motor. I would like to see if the problem comes from the pitch motor, but I don't know know to access it (i'm a little affraid to break the black ribbon).

Can the issue come from the pitch motor ? If so, how can I access it safely ?

Thanks !
2018-8-2
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RADROCKET
lvl.4
Flight distance : 1110827 ft
United States
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Roll sensor boardCould be the roll sensor potentiometer. If it's under warranty send it in for repair. If you're good with soldering you can replace it. Some people just buy the whole board.
I did just the potentiometer for like $5.00.

https://www.ebay.com/itm/DJI-Pha ... Plate-/172748915695


2018-8-2
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Rsthelen
Second Officer
Flight distance : 31726 ft
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2018-8-2
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Rsthelen
Second Officer
Flight distance : 31726 ft
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2018-8-2
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