Okay I have had my MacBook about 6 weeks now and primarily about 3 weeks ago I noticed the power brick was crackling when my MacBook was booted up and charging at the same time. I took the charger back to the store who said all the power supplies are like that and the noise depends on usage, and to demonstrate they let me 'listen' to another one in the shop and sure enough it crackled like mine so I just left with my original power brick. Now however I have noticed that my actual MacBook has started humming with or without the power brick attached and/or charging.
The noise is getting really annoying and am wondering if anybody else has experience of their actual MacBook humming?
The noise is getting really annoying and am wondering if anybody else has experience of their actual MacBook humming?