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Phantom 3 pro (Standby fan noise)

Discussion in 'Pro/Adv Discussion' started by Kasper Stampe, Sep 7, 2016.

  1. Kasper Stampe

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    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
     

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    sonof40 likes this.
  2. Oso

    Oso

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    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.
     
    JoBe likes this.
  3. Kasper Stampe

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    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 :(
     
  4. Multicoptertec

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