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edwardjulio

macrumors newbie
Original poster
Dec 7, 2014
26
0
I am working in a very quite environment, I noticed that my magsafe adaptor buzzes when I scroll on a page, can be a pdf document, can be a webpage on safari. its funny because it only buzzes or makes a high pitch noise when I scroll a page. is it normal? is it dangerous?
 
It doesn't sound normal to me

I am working in a very quite environment, I noticed that my magsafe adaptor buzzes when I scroll on a page, can be a pdf document, can be a webpage on safari. its funny because it only buzzes or makes a high pitch noise when I scroll a page. is it normal? is it dangerous?

It really shouldn't but it may be due to a lack of earthing depending on where you are using your mac...

No idea if dangerous..
 
Earthing should not matter as the brick has a double insulated logo and doesn't use an earthing pin (in North America at least) unless you use the extension. So I doubt its strictly necessary.

Have you tried a different outlet, preferably outside of your home (coffee place, friends house) to see if anything changed?

My machine makes faint chirps occasionally, almost like a mechanical hard drive. It doesn't clearly have one, but the faint noise has happened since the start and only noticeable in a quiet room. Hasn't affected me yet.
 
Use the extension

Earthing should not matter as the brick has a double insulated logo and doesn't use an earthing pin (in North America at least) unless you use the extension. So I doubt its strictly necessary.

Have you tried a different outlet, preferably outside of your home (coffee place, friends house) to see if anything changed?

My machine makes faint chirps occasionally, almost like a mechanical hard drive. It doesn't clearly have one, but the faint noise has happened since the start and only noticeable in a quiet room. Hasn't affected me yet.

This will often make it go away.

In the UK all electronics must be earthed....
 
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