Hi everyone, When I am using the lowest brightness levels, I can hear a faint wheezing noise coming from the bottom left area of the screen. The noise seems less and less distinct when I turn up the brightness and it is totally gone when I reach about 50% brightness, and you can hear it from afar if you place your ear at a certain angle. I just got my Refurbished 2013 RMBP today and this also happened with my non-retina MacBook which I had to return for this reason. So my question is, is anyone else experiencing this and is this normal? Because I'm worried since this happened to me twice already.