Question about IBM ThinkPad T21 2648 Notebook
Remove the bottom covers and see if you can track the exact location of the hum. Hopefully the humming is coming from a moving component, ie CD drive, hard drive, fan,etc..., and not being created by a circuitry short. You might also try pulling the hard drive and see if that drive is making the noise. If you can't find it under the bottom covers, then try pulling the keyboard. Anyway, see if you can determine where it is and let me know.
Posted on Aug 28, 2008
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Posted on Jan 02, 2017
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