Hi. After a small crash i had a month ago i sent my P3P over to service.

Minor crash, had to replace 4 motors just in case (one was hit only - no blades broken) and the shel (shell was not new as they told me but it was almost unused).

After i got it back i noticed vibration when it was on ground before take off. After taking off , in the air, everything is fine.

I was worried so i sent it over again for check and maybe replace motors again if that was the reason for vibrating. Indeed 4 motors replaced, i got it back but i still have the vibration.
I have this on video.

I noticed that 2 seconds after powering up, it gives a little rpm more and there the vibration comes in...

I was told by the service that my radio maybe has issues, it may sometimes give a 0,00001 percent more throttle or something like that, and i may inthe future have an issue with my radio... Strange though, i havent heard it anywhere else.
I am on 1.10 firmware on bird  and 1.6 on radio because that was working perfect for me.

Any ideas are welcome. could be bad motors, could be the shel, is there a chance soldering (wires soldered on board) is not good?

Roi

And this stops when it's in the air?

Hi.
Yes!!! either stops when rpm increases, or there is still some vibration, but nothing that i havent seen before.
I have always been seeing some vibration on the body and camera (before crash), no problem. Flying and video was fine.

Roi

It almost looks like one or more motors are spinning at lower rpms than the others,  then I guess they are syncing when sped up.  Just a guess.

I would send it back again.

Could it be a prop imbalance?

Try running motors without the props

Hi,
i have tried 3 sets of props, doing the same. Also without motors, there is no vibration...

Hi again.

I just opened and checked the solderings on the new motors. Is it my idea that themotors may not be new??? There is the DJI white glue on the cables that menas they were unsoldered from another bird. If they were new the cables would not have anything stuck on them......

Roi

phantom_film,run motors with no props and check each motor shaft for runout or wobble.the vibration would be less with no props.it seems i saw a runout on one of the motors in your video.this can determine if a motor shaft is bent.   good luck.

Thanks repairman, i will first speak with the service.
I see the motors that should be brand new, are used ...

The solderings in the cables of the motor , are very bad .
I suggest to resolder all of 4 motors .

Yes, Moses i agree.

I am getting 4 new motors and resolder them with a friend that has the equipment (soldering station worth 3k$).

Also the photo i upload shows what happened.

Sad about "proffesional service" and the drones they sent out to fly over people's heads.

Roi

Those motors wobble on their mounts.  Something isn't right for sure.  I'm pretty sure you're going to see some wobble with the props off, because the outer diameter of the motor was wobbling in relation to the shell.  Where was it sent for service?

Hi Roi, so the drone performs properly in the air and the vibration only happens when it is on the ground, right? We don't suggest repairing the drone by yourself, so I will forward your video to our engineers to confirm, will come back to you once I hear from them, could you please kindly wait for the result? Thank you.

Thank you. I will.