1 Reply Latest reply: Apr 29, 2012 10:57 PM by X423424X
David Burdige Level 1 Level 1 (0 points)

I have an older 20 in Apple Cinema Display.  I recently bought a "new" 65W power adapter which randomly beeps  (the old one I had did not, although both have a slight electrical hum that I can't seem to get rid of).  Does anyone have any thoughts on what causes the beep (or the hum in the adapter for the matter as well).

CInema Display