T420s case resonates with the fan
My T420s is three weeks old, and has a rather annoying mechanical resonance in concert with the fan rotation speed. With fan running in normal-high rpm, under an average desktop load, the resonance can be felt on the keyboard, case, etc. And of course it can be heard too, having a characteristic purring sound. Does anyone else have this same problem? I have two memory modules in the computer, could this have anything to do with it?
Regards,
Jormaporo
Solved!
Go to Solution.
I also had a similar problem over two weeks ago. The fan devloped a noise similar to DVD drive spinning up as the speed increased. There was also vibration on the bottom of the case where the fan was located.
I called Lenovo support and after put the phone near the fan, the support tech agreed there was a problem and offered to send someone to replace either the fan or the foam the next day. However, I choose to delay the repair for a week as I was going on a trip. The noise did die down to almost normal level after few days and the vibration is gone, so I end up cancelling the repair.
Just give them a call, I’m sure they will help you out.
P.S. Unless the memory sticks are loss (unlikely if the laptop is working), than I don’t think that is the source.
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