Same problem here with my new 115i Plat, very loud humming sound in silent mode, I dont know if i should RMA it and get a new 1 or just get something else.
Really wierd that al reviewers said it was so quiet, its a really anoying sound, and 2400 rpm in silent mode? Is this working as intented ? There should be a windows/browser mode at 1700 rpm so that its really silent.
Hope they can fixs this with some firmware updates.