Topic: Patting the back of console changes the condition of fan...

Hello guys,

I just bought a new Switch yesterday, and unfortunately, I met the issue of noisy fan. The fan was always loud with high speed during my play. The noise sounds like electricity.

I tried to pat the back of console slightly, then the noise disappeared and the speed of fan become normal. But after one more patting, the noise appeared again. I'm not quite understand about this situation, does it mean the fan is not fixed so that my patting lead to the collision between fan and other hardware?
Did someone meet the same problem?

Sorry for the poor English, just the new English learner.

I can hear the fan running. But maybe yours got some dirt in it?