A fan on the computer's power supply is humming. The reasons why the power supply is buzzing. Additional noise sources

Noise from the system unit is always a bad sign of computer operation. It should be eliminated not only because it irritates our ears, but it can also affect the performance of the computer, as well as wear and tear on parts. Today from this article you will learn why the computer (in particular, its system unit) makes noise and what needs to be done to remove unnecessary noise by returning the computer to the previous sound level during operation.

Which subnodes should have a quiet or passive computer?

However, the problem with building your computer will not be for someone who doesn’t recognize any noise compromises and wants to have a computer that doesn’t generate any sound. We already know which graphics card will provide us with the level of performance and quiet operation. Its fans will only spin when the graphics card core reaches 60 degrees Celsius. And then there is no sign of it.

Now it's time to choose a processor that doesn't take up too much power, but performs well in games. Ground so the model has four physics cores that will provide adequate performance across all credits. If you want a fairly passive computer, you must choose a huge and heavy heatsink made from a material that conducts heat well. You can also specify the number of edges, the distance between them, and the total surface area. It is important to remember that such a radiator must fit into our case.

7 reasons why the computer system unit makes noise

What to do to get rid of noise from the system unit?

If you do not see any problems in the components, but simply want not to hear the operation of the computer, then you can do just a few actions that will help to almost completely absorb the noise.

Change the cooling system. To get rid of the noise once and for all, only a radical change in cooling will help, namely, replacing it with a liquid one. Thus, it is not the fans that will cool the computer components, but the liquids, using pumps, heat sinks, radiators, a hose, sensors and similar devices. The difference will be quite noticeable, but such a system costs about 500 (and sometimes more) US dollars. Too expensive pleasure!

Change the box of the system unit. Sometimes it is enough to change the box of the system unit to reduce the noise level. For example, you can choose a box with noise and vibration isolation (or even make one yourself). Think also about the legs on which the system unit stands, they should be soft and absorb vibration well, i.e. rubberized.

Change coolers. The most optimal option for noise reduction (low-cost and perceptible by ear) is to replace all old coolers with new, more modern and silent ones. However, it will not be possible to waste time on trifles, otherwise you, as such, will not feel the effect! Some can even be configured by choosing either a quiet rotation mode, or a loud, but more powerful one (it is needed for those cases when the PC will be used for a long time, without interruptions).

Do it regularly. If you constantly read our magazine, then in almost every article we mention cleaning your computer, since it is really very important and useful for the system unit, so do not miss this point from our recommendations. After all, regular reading will save you from unnecessary problems associated with the noise coming from the system unit.

Since passive cooling is often overwhelming, finding the right model can be problematic. This makes it small, elegant and doesn't make any sound. It is important to understand, however, that this case is likely to be the most expensive component of the kit. Unfortunately, that's the cost of building a completely passive PC.

Is it better to have a quiet or passive computer?

Its cost is low, up to PLN 950, but this equipment has a 5-year warranty, power for passive and modular cables to facilitate maintenance. order in a PC case. It has a quiet fan, but is much cheaper than the previously mentioned model and has more power. As you can see, the biggest obstacle to building a silent passive computer is money. Items that do not have active cooling are definitely more expensive than their standard counterparts. Therefore, you should consider the reasonableness of such costs and make the minimum louder, but definitely cheaper set.

Now you know about all the causes of noise from the system unit, as well as how to get rid of it.

Cooler power supply

If you have determined that in system unit most the power supply makes a lot of noise... So it's time to repair it. Loud noise from the power supply(and indeed from the systemist) can be annoying and very tiring. Usually power supply fan starts make a lot of noise over time, this is due to dust clogging and lack of lubrication.

But if someone freak is silent, and even the slightest noise throws him off balance, there is no way out, and the creation of a PC for a comparable configuration should pay a few thousand more zlotys. What it costs will be explained in the review. At the front, we see only basic information: manufacturer's logo, power supply model and wattage.

The complete opposite on the other side of the box. Actually nothing is missing in the set. The attached brochure, arranged on a large sheet, contains some information on technical characteristics Oh, short description technical characteristics. After the computer is turned off, the fan is then rotated for 1 minute to dissipate the heat stored in the power supply. This is another attempt to extend the life of the product.

You can cope with this problem yourself.

To do this, remove the power supply, and if you do not want to disconnect the connectors from the motherboard, HDD and CD-drive, then release the wires to the full length and position the power supply as it is convenient for you.

Remove the cover and dismantle the fan. The strong noise of the PSU can be caused by the accumulated dust on the blades of the cooler, so we clean the blades from the dirt. This can be done with an old toothbrush or, as an option, with a vacuum cleaner with a nozzle with a long pile. We also clean the board and radiators of the power supply from dust.

To lubricate the cooler, tear off the sticker and take out the plug at the end. We clean the axle and the washer from the old thickened grease. We drip a couple of drops of oil onto the axle (do not overdo it, there is no need for extra grease) and turn the impeller to evenly distribute the grease. We put in place the plug and the sticker.

I wrote more about this in the previous review of the Revolution 85. Nice to see that the power supply is tested even at 50 degrees. The maximum combined power of both lines is 120 W. Meanwhile, the 12V line is divided by three. True, this power supply has two unsurpassed processor power cables, one of which buyers will hide for themselves.

It is not only the second one that is connected in parallel to the same connector, but actually combine the two cables. Connecting cables with three 12V lines is pretty interesting. The processor power cords are connected to the first line. The second and third are split into twelve wires of two video cards for power cables and peripheral cables. Video card power cables. This solution is very logical considering that both hard drives and other devices can be connected to both lines, which could theoretically increase costs from a single 12V line to those that provide high current protection for the power supply when using a very powerful video card.

We assemble the power supply unit, put it in place and evaluate the resulting result.

Such a measure does not always help, and the fan of the power supply continues make a lot of noise, hum, and even an element of vibration appears. The fact is that loud power supply noise may be caused by excessive wear on the motor bushings. In this case, it is better to replace the cooler.

Of course, according to at least in theory, this should provide a longer fan life and possibly less noise in the future. The design of the power supply case is completely normal: the fan is covered with a grill at the bottom. In the back, the grille is removed for warm weather. A sticker with the specifications shown on the top of the power supply.

Its essence lies in reducing energy currents when switching transistors. Other components and designs are fairly common. We find sufficient capacitors and coils and varistors for primary filtration. Diode and transistor heat sinks, as you can see, are very small - there is little heat in the environment. The diode bridge also has a separate heatsink. By the way, some capacitors are fused into a separate plate and rotated 90 degrees to keep it. A quality that is more crimson than the eyes is the quality of the solder.

The price of coolers is not high and you shouldn't bother with repairing them too much (unless it's a very rare cooler), and you can probably buy them in all computer stores.

When buying a new cooler, pay attention to its noise level (look at the characteristics). It is desirable that it be as small as possible. The best option is up to 20 dB, not a bad result and 25 dB.

The extra soldering of the detached cable trays looks pretty bad. It is understood that its maximum current is 15A and it is known from the specification that it spins at up to 900 rpm. As we have seen in more than one power supply, part of the fan is covered with plastic to improve the fan's direct airflow. PSU testing hasn't changed much since the last review. The load on the main three voltage lines is a load with a bunch of powerful resistors that can be tuned to a pair of amplifiers.