Optoma UHD51 noise or normal sound?
I just bought an Optoma UHD51 and getting a buzz sound when it is turned on even on main landing menu or when not playing/projecting anything. Is this a common thing for this series or brand optoma projectors or is this a defective unit? What do you think projector experts & more experienced users?
Due post restrictions I've put youtube video id here: 2gYGkxWnMO4 . Sorry about that.