My Phantom 3 Pro sounds like a hair dryer when powered on with the motors off
2125 6 2015-4-29
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francisco This user has been deleted
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2015-4-29
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knicholas194
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Mine sounds just like that. kind of a disappointment. My transmitter even makes noise. Makes it seem cheaper in my opinion, which is a shame.  
2015-4-29
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kenargo
Second Officer
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United States
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Yes, they have all made an air noise.  I haven't opened up the section of the Phantom but I suspect it's a small fan unit to keep something cool; at least that is my guess until I take things apart.  The pre-production units have the same noise.
2015-4-29
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labroides
Core User of DJI
Flight distance : 9991457 ft
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Australia
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There is a fan in the gimbal base of the Pro
2015-4-29
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francisco This user has been deleted
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Ariekes
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Are you really worried about the faint sound a fan is making inside your phantom 3?
2015-4-29
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john.lambert4
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Australia
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I'd be more worried if it DIDN'T make any sounds (cooling fan) lol   
2015-4-29
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