rMBP Display/Keyboard Backlight Buzzing

Smores88

macrumors newbie
Original poster
Oct 29, 2011
7
0
Hey all. I bought my rMBP last week, and it's really an amazing machine. I just noticed that if I dim the display brightness down about 3/4 of the way, the screen starts to emit a high pitched humming noise. It get's louder as the display gets dimmer...

Also, whenever the keyboard backlight is on, there is a similar high pitched buzzing noise at all levels of brightness.

Just wondering if anyone has experienced the same thing, and if this is normal behavior? Thanks for the help!
 

Smores88

macrumors newbie
Original poster
Oct 29, 2011
7
0
Thanks for the response, Dark Void! I've made a genius bar appointment for today, so hopefully it'll get straightened out there.
 

tadziak

macrumors regular
Jan 4, 2011
147
1
Hey all. I bought my rMBP last week, and it's really an amazing machine. I just noticed that if I dim the display brightness down about 3/4 of the way, the screen starts to emit a high pitched humming noise. It get's louder as the display gets dimmer...

Also, whenever the keyboard backlight is on, there is a similar high pitched buzzing noise at all levels of brightness.

Just wondering if anyone has experienced the same thing, and if this is normal behavior? Thanks for the help!
Hi, did you manage to solve your issue? I can hear it too - especially with my keyboard backlit - whenever it's on - there is quite noisy buzzing, which i can hear even when sitting half a meter from the macbook...
 
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