Mine never made that noise and when you turn on like that,..if you look at your battery before it slides in-is that little red triangle icon visible?I ask because maybe the battery is upside down..but i more than could be wrong
From inside middle section not gimbal, all latest firmware, imu calibration, compass - sounds like it's the fan vibrating from other comments and noise itself (and re other posts)Is that noise coming from your gimbal? Does the gimbal feel like it's vibrating? My new p4p arrived yesterday and had a very noisy gimbal after switching on, which also vibrated.
First thoughts were to send it back - but having owned a p2 and p3p - I thought I'd try some firmware updates first...
It needed 3 firmware updates altogether (I like to do them in order rather than skip any out). After first update the noise stopped completely and hasn't come back since. I've also done an imu calibration to be extra sure.
You should only hear the fan when your p4p is running (and motors are off). No noise whatsoever should be coming from the gimbal.
Best of luck with your new p4p - let's hope we don't see any other issues!