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Search for noise sources in your system unit

If you assume that this is another post about the basics of aerodynamics, about fans and blah blah blah, then you are mistaken. In this post, I want to describe a couple of practical techniques - how to determine what exactly makes a noise in your particular system unit.

I’ll just make a reservation that I’m not writing about overclockers who always have equipment like a stethoscope and an oscilloscope, and I don’t also write about owners of fashionable Antec open-air things. Post about ordinary users of ordinary desktop PCs.

If you just google this topic, then almost identical articles about typical noise sources emerge to the top: drives and hard drives, fans on components, and fans in the case. To begin with, you will say perfectly, sometimes you can look inside the working computer and determine the problem with the naked hearing. And go to the store for a new cooler and a huge copper porcupine radiator.
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But in most cases it is not. You open the case, and the tree-sticks, almost all the noise, and noise at first glance the same. What to do?

The first way is banal:

Just hold down the center of the fan impeller with your finger (do not put your fingers into the blades). If the noise subsides, it's about him. It is recommended to do this only in relation to the case fans, and only for a couple of seconds, not more. If not lazy - turn off the fans separately and listen to the difference.

Method two:

Get some wooden stick 30 centimeters long and 3-5 mm thick somewhere. There is usually a bulk in any hardware store, such a square bar is called “bead” - with this thing our fathers and mothers fastened glass to wooden window frames. Make sure that there is no burrs on the stick, and gently take its end into the teeth. Not just in the mouth, but in the teeth. Poke the other end into the suspect section of the system unit. And gently cover your ears with your palms.

The difference in vibration sensations will help identify the most obvious sources.

Method three:

Take a sheet of good A4 paper and roll up the cone. If the paper is thin - take two sheets. Make a thin end the diameter of the little finger, and wide - the size of a palm. Turn the cone over and insert it into your ear, and use a wide end to point at the sources of noise. With your free hand, close the other ear. And listen.

Finally: the same paper cone can serve as an excellent tool for blowing out accumulated dust. The physics is simple - your exhalation into the wide part of the cone creates a powerful and thin stream of air from its other end. Dust perfectly flies from all corners and crevices. Take care of your eyes. And good luck to you in the fight against noise :-)

Source: https://habr.com/ru/post/85199/


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