MacBooks forum


Is fan noise after power cable fray a known issue?

by RedfordEric / February 21, 2013 9:14 AM PST

Mac pro recently had a power cord issue (possible strain relief issue), then the laptop started to make a loud grinding noise, like the fan was failing. Does anyone have any suggestions or experience with this?

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All Answers

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This is either a Mac Pro or a Macbook Pro
by mrmacfixit Forum moderator / February 21, 2013 11:50 AM PST

you indicated that your machine was both.

When was the last time you cleared out vents on the laptop

try a squirt of air in the vents


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(NT) CLARIFICATION: This is a Macbook Pro with Magsaf cable
by RedfordEric / February 21, 2013 12:11 PM PST
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The power cord issue is almost certainly not the
by mrmacfixit Forum moderator / February 21, 2013 8:55 PM PST

cause of the grinding noise on your MBP.

Other than the Hard Drive, the only thing that rotates constantly is the cooling fan.

Back to my vents question.


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by RedfordEric / February 21, 2013 9:29 PM PST

The laptop is about a year and a half old and, as far as I know, the vents were never cleaned. I will have these checked (this is my daughter's laptop and it is at school).
She did have an issue with the power cord giving intermitent power (we have purchased a new cord), but just a few days after the cord issue started the noise issue started. Could that have any impact the on the fan, or will the new cord be sufficient (after cleaning the vents)?
Thanks for the reply. I await your next response.

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More on vents.
by R. Proffitt Forum moderator / February 22, 2013 6:08 AM PST
In reply to: Never

Let me jump in here a moment. The cleaning of the vents is an every few month maintenance item at our office. We want the longest life span and so we get it done every few months.

Once in a while you'll encounter a client that wants to check into the vents or cleaning rather than perform the work. Don't laugh. We can do that as we have microscopes and cameras to create a report for the client before the work proceeds. We smile a little more as the bill goes up.

PS. Hope this made you smile too.

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by Hforman / February 23, 2013 7:33 AM PST

Is it possible the cable frayed by hitting the fan blades? Was this an internal power cable or external? If the fan hit a cable, it might have gotten tweaked changing the sound it makes.

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Sound fixed
by RedfordEric / February 23, 2013 10:49 AM PST
In reply to: Possible?

Took the laptop to the Apple store and they had to replace the fan; 10 minutes and $61 later the laptop sounds like new. The cable is an external cord, and is a known issue with that particular charger.

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