2014 alternator whine?

[revolver3377]

Picked up my raptor a few weeks ago. Of course now I hear a sound that wasnt there. Has anyone else experienced this? It goes away once the engine heats up, it sounds like the alternator.

 

[rschap1]

I have had a few on other vehicles that sounded like bearings were worn.
Sometimes I could shoot a little WD40 or something similar at each end and hear difference.
Most needed replacing not long after.