The fan on the power supply does not spin

The fan does not start? Fixable!

What does an overkloker do to achieve an acceptable temperature regime in the system unit and for all its components? Correctly, sets additional fans or replaces them with more powerful. And what does he do when he understands that the roar of all this cloud of fans is in no way compensated by the additional ten megagerians, which were squeezed out of the processor or video card? Again correctly, tries to reduce speed speed, and with it the noise.

The most common way is to supply a low voltage on the fan, usually 7 in instead of standard 12. As a rule, for this it is enough to flow one wires and we kill two birds with one stone with one shot: we reduce the noise level to an acceptable one, but still lower the temperature. Since the starting voltage for many fans is the same 7 V, most painlessly tolerate this procedure.

Most, but not all: o (. Unfortunately, I have repeatedly met fans, which seven volts are not enough to start, although it is enough to maintain stable work. If you push the blades a little bit, then the fan is spinning without problems until the next turning on, when the problem with the start arises again. Agree that the fan is not the most convenient solution and often it becomes impossible if access to the fan is difficult.

We faced the task of providing a nominal power to the fans only at the time of starting and lowered during subsequent work. It turned out that the solution literally lies on the surface and is available to anyone who is able to hold the soldering iron in their hands.

In our case, no wiring needs to be fed and the fan is powered from standard 12 V. To ensure the voltage necessary for constant operation, in the gap of the 12-volt wire, we consistently solder several diodes in the direct direction. At the same time, about 0 will fall on each of them.7th century. The number of diodes is selected so as to get the desired voltage at the output. For example, we used eight suitable silicon diodes dropped from a dead power supply, and received at the exit 6.8th century.

Noisy cooler in a computer

When the user complains to you that his computer is noisy, in fact, there are only two types of components that this noise can create: discovers and cooling fans. But in most cases you will find that the noise is generated by one of the cooling fans inside the computer. Most computers have three cooling fans, one inside the power supply, one on the case itself and one on the processor. Of course, each of these cooling fans is designed in such a way as to ensure the maximum coolness of the entire system, creating a constant air flow inside the case, into which cold air will enter when moving hot air.

If any of these cooling fans fails, the system may overheat and cause malfunctions. So your first desire is just replacing a noisy fan. Although this is a fairly simple operation, but it is not always necessary. In many cases, the cooler needs only one drop of oil.

The main reasons for the fan stop

The reason why the laptop cooler stopped functioning or periodically turns off, maybe not one. We list the main:

• Strong pollution. Because of this, when the laptop is turned on, it can make a loud noise, even crack, and sometimes the fan just stops.
• The failure of the element itself, which can also be diagnosed independently (how to do this, will be told below).
• Damage of the components of the motherboard responsible for rotation of the blades.

But before analyzing the device and performing other complex actions, make sure that the absence of noise of the blades is not caused by objective reasons. Set a small utility (for example, Core TEMP), showing in real time the temperature of the processor.

In some models, the value of this parameter in which the cooler automatically turns off is quite high. about 45 degrees. This is done to reduce the noise of the laptop and in no case is a malfunction. If the device stops at higher temperatures, you can immediately talk about a hardware or software problem.

The power supply fan does not work

Today’s topic is quite simple: what to do if a computer power supply fan does not work? Primarily. In no case should you leave it in this state! If a fan does not work (power supply or processor, video card, other components). It is necessary to make it so that he will work again 🙂

If the device has a fan (active cooling system), then it is not just like that. Namely. It actively cools the radiators of the heat removal from hot chips and components. In this case, the rule: “works. Do not touch!”Not good.

The fact is that the non.working power fan of the power supply (or any other component) can eventually lead to overheating of the entire node and, as a result. his failure. Also, do not forget that the service life of electrical components working in overheating for a long time is sharply reduced. This, first of all, applies to electrolytic capacitors located in the computer power supply.

So today we will consider two problems that are solved the same. Problems are as follows:

As we said, the solution here is one. extract a power supply, disassemble it and grease the fan. Typically, his stop leads to his stop or simply (over time) production of factory lubrication.

Let’s start the repair process! To begin with, we will need to remove the side cover of the system unit:

Pay attention to the location of the panel of the motherboard (indicated by a rectangle). This is. The side of the system unit on which the board itself is attached is. we need to remove the cover from the opposite side.

Probably, this is not necessary to explain in such detail, but I remembered a telephone conversation with my friend, who, according to my hints, tried to make out his computer. The first nuance arose precisely when I heard on my replica that I had to remove the side cover: “I took it off, there. Iron wall!”:)

We continue. We put our system unit on the side (as it will be more convenient) and look at the upcoming front of work closer:

Red here, we indicate the power connectors that go from the block to the motherboard and other computer devices. We will need to disconnect them all.

Please note: on the connectors directly on the motherboard there are special plastic latches fixing their position in the nest. They must be bent, pressing with a finger at the top, and then remove the withdrawal from the board.

Tip: In order to easily disconnect the power of the drive, its connector must be raised a little up.

After we disconnected all the power cables, we will need to unscrew four bolts on the back of the system unit. They are shown in the photo below:

After that, you can already pull out a power supply from the body. From below, it has four more small screws with which its protective cover is attached:

We unscrew them. We raise the freed part of the casing and observe about it about the following picture:

On the right is the fan of the power supply that does not spin. What we still see here? From above (green). AC control control board 200 V (out of the outlet) to constant 12, 5 and 3 volts (inside the computer). A little lower left. Two aluminum radiator of the power cooling system of the power supply. Under them. capacitors and throttle systems for protecting and stabilizing voltage.

At this stage, it is very desirable to blow out the power supply from the dust with the help of a vacuum cleaner (placed on blowing) or. Special spray can with compressed air.

We continue. Now we must remove the power supply fan. We turn it to our side, on which there is a nest of power and see four fasteners.

The protective grill on the power supply can be removed, or it may be part of the protective casing itself. In our case, it is made in the form of a separate element. Having twisted the screws, we have reached the main. reached the non.working fan of the power supply!

We take it in the palm of your hand (perhaps at this stage you will have to “walk” with a soft brush to remove accumulated dust from the surface or use cotton wool with cologne) and pay attention to a colored round label near the wires. It can be seen in the photo above in the center under the protective grill. She, as you guessed, performs not just aesthetic function.

To make sure of this. we push its edge and bend (not to the end) to the side.

Under it we can see a “plug” made either from rubber or. From plastic. It is she who and the “sticker” (sticker) himself serve as an obstacle to the path of dust in the fan bearing.

If the “plug” is made of rubber, then it will not be difficult to raise it, if you are faced with plastic, then to extract it will have to be used by something thin and durable (the needle is ideal).

And after that we will need what will help us in the case when the power supply fan does not work. This is. Ordinary machine oil. In this case. Oil for sewing machines, popularly called “vigor”. It can be found without problems in household stores.

Remove the cap, cut off part of the plastic under it and squeeze it out a small amount on the locking ring of the fan of the system unit, as shown in the photo below.

Why do you have to change the cooler?

Coolers on power supplies are indeed the most important part of them. Heating of BPP, as a rule, is much stronger than on many other PC elements, so its cooling is a critical issue.

At the same time, most often user complaints are associated precisely with the fact that they do not work on the power supply unit. Not on the processor, not on the video card, but on the BP. Why is that? The reasons are as follows:

• Increased wear of the details. BP is forced to supply the entire PC with electricity, the whole main load falls on it. He accepts, converts, and distributes, and protects Therefore, the cooling system has to work for wear.
• The manufacturer’s desire to save. The funny thing is that even on modern models there are cheap, Chinese PSUs with very low power. This leads to the fact that you can often hear angry sounds. Of course, if the device is not designed for high power, it will not live for a long time.
• Incorrect operation. Often, users do not even think about which power supplies are installed on their devices. Increased noise, if it attracts attention, then you quickly get used to it. And at the exit, the resource is depleted, and very soon you will not hear the usual buzz.

All these reasons in the complex lead to the fact that your fan does not work on the power supply. But what to do in such a situation? The answer is quite simple.

The cooler does not spin. What to do?

If you remove the moving part of the fan, you will see not just the lack of lubrication, but also the presence of a fairly viscous composition that was formed from lubricants and small particles of the developed materials: plastic, isolation of the stator conductors and dust. First, wipe all the internal parts of the cooler from this composition thoroughly. After that, it is necessary to drop with machine oil (suitable oil for sewing machines) to the places where the moving parts of the fan glowing. Next, install the cooler in your place.

You will be pleasantly surprised by the result: the cooler earned, while he began to work as an order of magnitude quieter than other fans of the computer cooling system. Using the moment, make an audit of other components of the computer cooling system, the cooler does not spin on the back wall, and other fans and other fans. Surely, they also worked out enough time and can refuse at any time.

The cooler does not spin. What to do?

If you remove the moving part of the fan, you will see not just the lack of lubrication, but also the presence of a fairly viscous composition that was formed from lubricants and small particles of the developed materials: plastic, isolation of the stator conductors and dust. First, wipe all the internal parts of the cooler from this composition thoroughly. After that, it is necessary to drop with machine oil (suitable oil for sewing machines) to the places where the moving parts of the fan glowing. Next, install the cooler in your place.

You will be pleasantly surprised by the result: the cooler earned, while he began to work as an order of magnitude quieter than other fans of the computer cooling system. Using the moment, make an audit of other components of the computer cooling system, the cooler does not spin on the back wall, and other fans and other fans. Surely, they also worked out enough time and can refuse at any time.

Fans do not spin on the video card

It is sometimes not easy to notice that one or several “twists” stopped working on the cooling system of the graphic adapter, since all the computer equipment is in a closed case. In this case, we can suspect something wrong only when we get overheating of the map, accompanied by malfunctions in the work of the latter.

When opening the case, it is found that when clicking on the Power button, fans on the culer of the video card do not start. Also, this can also be seen at the first test launch of the installed device. We will analyze in more detail the reasons for this behavior of the cooling system.

Elimination of hardware problems

The last, and unfortunately, is a fairly common reason. physical problems with cooling fans.

Perhaps it will turn out to do with “low blood” if the computer has not been cleaned from dust for a long time. maybe it just hid between the cooler’s blades or got into the rotation mechanism. Open the PC or laptop case, carefully inspect the cooling products and clean if the degree of dusting is too large.