Mid 2009 Model A1278 / 2.26 or 2.53 GHz Core 2 Duo processor EMC 2326

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Why my fan sounds weird?

Hello folks.

My fan began sounding weird.

I'm not sure how to describe a sound. I only heard air moving, today it sounds more like an electric motor, like a loud hard drive.

I popped the lower case, fan is a bit dusty, but it does not look clogged or obstructed.

What can it be? Is there any DIY remedies I can try?

Answered! View the answer I have this problem too

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don't use WD40 to lubricate your fan instead use sewing machine oil. Check this link and you'll know why:

http://www.techrepublic.com/article/quie...

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You can try lubricating the fan with a light oil. Just pull the blade assembly off the fan and put oil on the pin. However, you should replace the fan as the lubrication doesn't last long.

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Does it mean fan is dying or does it just need maintenance?

Is there some specific reason for a fan to go dead, I'd like to know if there are steps to prevent the next one go bad.

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Bravo will be eternally grateful.
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