I checked the Kepco power supplies located at the corner station CER Mezanine.

Rack C1 - Temps < 72F, no vibrations
Rack C2 - Temps < 72F, no vibrations
Rack C3 - Temps < 72F, no vibrations
Rack C4 - Temps < 72F, no vibrations
Rack C5 - Temps < 72F, (U5-U7 PSL +/- 18V minor vibration noted)
Rack C6 - Temps < 72F, no vibrations

The minor vibration on C5:U5-U7 is not major enough to warrant action, just keep an eye on this one, both supplies running old fans.