Nano+ High Pitch Fan Noise

[Eagle928]

Anyone else getting a high pitch fan noise with their Nano or Nano+?

I bought a second one and instantly noticed the difference on the second one. I used a computer blower to blow out the little fan but no luck. I'm thinking a bearing issue but not sure.

 

[Eagle928]

I ended up sending it back since the seller didn't want to work with me on it and I didn't want to deal with Autel on a brand new drone. The seller can deal with it.