Loud electronic sounds coming from Macbook Pro

Webster's Mac

macrumors regular
Dec 18, 2016
Mine has some slight electrical sound like that. Loud sounds is definitely abnormal...but soft sounds should be ok


macrumors newbie
Oct 12, 2018
Sound like the noise in this video?

I had a similar crackly/electrically noise to this but was also a some other noise almost like a beeping in a 2011 MBP late last year.
Thought the noise was from the HD, it was getting old and slow.
Replaced the HD with a SSD, noise seemed to stop but I wasn't using this laptop much after this was done.
At a later date, I was sitting next to the main user of this laptop while it was being used and heard this noise again.
After a bit of investigating, I tracked it down the fan that was making the noise, I replaced the fan and it's been quiet ever since.
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