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T60P - Fan cleaned but noise level increased

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Started ‎03-07-2012 by
Modified ‎03-07-2012 by
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T60P - Fan cleaned but noise level increased

Question

My fan started getting noisy so I opened up my laptop and cleaned it out. I then put it all back together, turned it on and now it's even louder than before. The laptop itself is running fine, just  that the fan is being extremely loud and running at 3000+rpm and the CPU is at 48-50 degrees celsius.

Answer

How loud a fan sounds is related to the friction within the bearing and how the vane is shaped to allow air to flow.

The above points to a fan's bearing wearing out. It may need a replacement.