Nikon D300 making odd noise (video)

[SoulfulRecover]

Today I noticed that my D300 on start up and shut down, makes an odd electric squeaking kind of noise. Its pretty hard to hear and it doesnt do it every single time but if you turn up your speakers you can hear it at the beginning of the video and at the end. Has anyone heard anything like this before?



Maybe its the sensor cleaner? I havent ever heard it before

 

[KmH]

If you have the sensor cleaning option set to clean both on start up and shut down i would also suspect that is making the noise.

By the way a D300 does not have video, the D300s does.