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Released June 2012 / Core i7 processor with Turbo Boost / Up to 1 GB GDDR5 Video RAM

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Tiny High Noise From the Right Fan

Hello,

Recently, since maybe a month or two (or six) ago, the right fan started producing the sound you can hear in the video I made when I removed the panel.

It's quite annoying. I blowed through the interior and partially cleaned up the white powderish dust inside. Until then, I'd ocassionally hear a crackling sound as if some object rubbed against a surface, or a small solid fragment got loose. I'm not sure the crackling won't reemerge.

With the back panel opened, I turned on the Mac and boosted the fan speed to the max with Temperature Gauge that I have running 24/7/365. The sound is normal at such speed. Once it's low, I hear that tiny sound. In fact, it's coming right now. When TG increases the fan speed, the sound modulations resemble those of the jet engine as the aircraft is taking off.

So, what is it?

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Have you tried using a little WD40 to lubricate the fans spindle?

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May be the motor (that spins the fan) being dirty (or rubbing against something?)

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Not much you can do here, the fan bearing is likely worn out. You could try dabbing a bit of WD40 oil onto the bearing which is visible on the other side. It takes very little! Spray the oil into the cap and use a cotton swab to soak up a bit (don't spray it) and dab the bearing . I personally like a watchmaker's oiler which is a pin that has a wider area to hold the oil in a drop until you touch the bearing. Again don't over do it this bearing needs very little oil just enough to slowly seep into the gap between the shaft and the bearing.

Here's the guide to remote it or replace it MacBook Pro 15" Unibody Mid 2012 Right Fan Replacement and here's the needed part TheBookYard UK - Unibody Macbook Pro 15" Fan, Right

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Elijah sonsuza kadar minnettar olacak.
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