u/HobbsLane

Tried to post this earlier but the compression ate the detail and made the titles illegible. Looks okay in the preview this time but here's an imgchest link in case it does it again: https://imgchest.com/p/dl7ppe5b67o

At a loss on this one. Unit is making a buzzing sound, I'd say an electrical one but it's still going after two days of being completely unplugged. It's not loud, got to put your ear to the grate to really hear it, but should be able to make it out​ in this video if you turn your volume up. Any ideas what's causing it and is it safe to use?