Sidebar Sidebar
Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

small buzzing (SSD activity) when the air is plugged

S

sonico7

macrumors newbie
Original poster
Apr 29, 2011
7
0
HI im have a 2011 MBA 13.

I Want to know if It is normal to hear a little hum or buzz (t sounds like a spinning hard disk, o a shaver) every time I scroll a page on Safari and also when open a APP or loading something (like a SDD have activity) .I understand that SSD would not have to do it because it has no moving parts

When I unplug the Magsafe of the air disappears completely :confused: only appear when the air is plugged .

The small hum/buzz comes close to the ESC key near magsafe connector

Thanks in advance
 
O

orangezorki

macrumors 6502a
Aug 30, 2006
633
30
Sounds like the power management bit of the computer - may be nothing, but I would take it to your local Apple store if it is still in warranty.

David
 
JD92

JD92

macrumors 6502a
Apr 14, 2005
934
31
I remember this exact same thing happened on my old 2006 MacBook. Never did figure out the cause, but it never really bothered me.
 
C

calvol

macrumors 6502a
Feb 3, 2011
995
4
This is probably the voltage regulator on the logic board. It is probably a "switcher" VR as opposed to a "linear" VR. Switchers are cheaper, but their weakness is that they make a humming noise under load. Was your battery full? I would try to see if you hear it with the battery fully charged and with the mag-safe plugged in.
 
P

pieuk

macrumors member
Dec 25, 2011
48
0
ive had this and wondered what it was also. you can only really hear it at night when everything is super quiet. its so quiet you wouldnt even know it was there tbh
 
S

sonico7

macrumors newbie
Original poster
Apr 29, 2011
7
0
Thanks for the answers!

calvol said:
This is probably the voltage regulator on the logic board. It is probably a "switcher" VR as opposed to a "linear" VR. Switchers are cheaper, but their weakness is that they make a humming noise under load. Was your battery full?
Click to expand...

I would try to see if you hear it with the battery fully charged and with the mag-safe plugged in.
Click to expand...

With the battery fully charged and with the mag-safe plugged NO hum/buzz issues :rolleyes: only be hear when charging and the SSD have activity why? this is normal?.
 
Last edited:
O

orangezorki

macrumors 6502a
Aug 30, 2006
633
30
sonico7 said:
With the battery fully charged and with the mag-safe plugged NO hum/buzz issues :rolleyes: only be hear when charging and the SSD have activity why? this is normal?.
Click to expand...

I guess when the battery is charging and the computer under load, the component is user the greatest stress.
 
You must log in or register to reply here.
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.
Top Bottom