Phantom 3 pro (Standby fan noise)

[Kasper Stampe]

I just got my new Phantom 3 pro this evening.
After turning the aircraft on, it begins to make a bad sound, like something is wrong with a fan somewhere, very loud.
There is some guys on this forum who has the same problem, but i cant find the post again
Finally i figured out whats wrong, and again, DJI has some problems.

The pictures almost tell every thing. When thightening the 4 screw on the "ultrasonic thing" the circuit board is pressing against the fan on the other side, and then the fan makes alot of noise. How can this happens ? Rookie mistake.
Hope it helps

Sorry for my bad english

 

[Oso]

So it's the Lightbridge board (under the VPS board) that is causing the fan noise sound that some have noted. Nice find, thanks.Thanks for the post and the pix as well.

 

[Kasper Stampe]

Thanks. Im very unlucky.
First drone was set on fire because of bad circuitboard.
and this one made a lot of noise. Ofcouse the problem is solved now, but i dont know if there is any damage because of the fan problem. I had a couple of flight with the noise going on.
Maybe i schould contact DJI again

 

[Multicoptertec]

If the fan is spinning freely, you are probably fine, just keep an eye on things.