The power supply in a personal computer is one of the most important components. These devices differ not only in power, but also in design features. Before release, all models undergo a certain standardization procedure. The main elements of the blocks can be considered a transformer, converter, as well as a rectifier. Additionally, depending on the modification, various cooling and protective systems are installed on the device.
How to make a block replacement?
Replacing the power supply is quite simple, and you can do it yourself without any effort. To do this, a person from tools will need only a Phillips screwdriver. The unit is located in the case of a personal computer at the rear side, where all the connectors are located. First of all, you need to unscrew the four nuts on the panel. After that, the unit will disconnect from the cover of the personal computer, but it is currently impossible to remove it. This is due to the fact that the unit remains connected to the motherboard, hard drive, as well as the CD-ROM. Therefore, a person must disconnect all contacts that prevent this before removing the device.
General device diagnostics
When the network power supply breaks down, first of all, it is necessary to make its general diagnosis in order to understand the cause of the malfunction. To do this, disconnect the item from the personal computer. To do this, unscrew the four nuts that hold the protective cover of the device. This can be done using a Phillips screwdriver. Next, the cover must be carefully lifted up. In order for a person to have full access to all the elements of the unit, it is important to remove the cooler of the device after removing the panel.
It is usually mounted on four nuts, and you can also handle them with a Phillips screwdriver. Next, you should carefully inspect all components. In particular, it is important to pay attention to dark spots. When the system overheats, as a rule, black spots remain. After that, you can disconnect the transformer, as well as inspect the converter. If the integrity of the winding is not broken, then the unit needs a more thorough check.
Repair of Asus blocks
Many buyers choose an Asus power supply due to its high power. On average, it is approximately 500 watts. Cables for models are mainly used non-modular type. On average, the best power supply from Asus costs around 3 thousand rubles. Rectifiers in this case are installed next to the converters, and their throughput is pretty good. All standard connectors are provided for them.
With a voltage of 3 V, the device can withstand an average load of 24 A. The filters should also be noted separately. They are installed in cases of only network type and are located next to rectifiers. The main problem of the blocks of the above company is considered to be the overvoltage of the inductor. This is due to the fact that the threshold voltage level increases sharply. As a result, the integrity of the winding is violated. In order to replace the inductor, the emergency power supply unit must be removed from the personal computer.
Next, you need to unscrew all the nuts that hold the upper U-shaped cover. After that, you can not even touch the cooler. In this case, the coil can be disconnected separately. At the same time, it is held on the chip on only one contact. After replacing the element, the unit must be reassembled and inserted into the personal computer.
Common problems with Samsung blocks
Samsung blocks are in great demand today. Modulators in almost all models use binary. Their important advantage can be called good signal conductivity. Moreover, the delay in the system is quite small. However, Samsung also has drawbacks. First of all, a common malfunction, which is caused by a conflict between the system and the converter, should be noted. This process occurs because the bandwidth in the device changes. In order to solve this problem, the unit converter must be replaced.
This is quite simple if you have a Phillips screwdriver on hand. In this case, the cooler in the block will have to be disconnected. Thus, a person will have full access to the converter. It is mounted on the chip using a special lock. In order to remove it, it is necessary to press on small protrusions with fingers from two sides. After that, the inverter will disconnect. Before installing a new model, the plate on which the part is located must be cleaned. An ordinary fleece is suitable for these purposes. Some experts additionally advise lubricating it with ethyl alcohol.
Inlet filter repair
Doing the repair of computer power supplies with your own hands, if the input filter breaks, is quite simple. To do this, you must first extract this element. It is located in the device usually near the rectifier. Moreover, in some cases, the filter is connected to the converter. In order to check its performance, it is necessary to inspect its upper part. If dark spots are visible on it, then the element was overloaded. In this case, a person must clean all contacts and fix the filter in its original place.
Inverter Service
In order to do the repair of computer power supplies with your own hands when the inverter breaks down, you must have a Phillips screwdriver. The above element is located near the cooler. You can detach it by pushing the plate, which is located at its base. In some cases, manufacturers install two clips in this place that are interconnected. In this case, the inverter is disconnected with two fingers. Repair of the device in such a situation must begin with the inspection of the base. It is a flat plate to which the regulator is attached.
If the base has any defects, then the element will have to be completely replaced. To do this, you need to purchase a similar model. In order to fix the inductor in its previous position, you must first raise the plate up. If two clamps were located there, then before installing the inductor, they are pushed to the side. After that, a protective cover is screwed to the unit, and the device is again placed on the case of a personal computer.
Control Controller Inspection
Doing it yourself can repair a computer’s power supplies when the controller breaks down. The whole problem in this case is the presence of a large number of electrodes. When the system closes, the controller is not able to work properly. In order to clean the contacts, many advise using an eraser. At the same time, great efforts should not be made to him. If this does not help, then the controller is completely twisted from the rectifier and replaced with a new one.
This can be done with a screwdriver. In this case, it is important not to damage the microcircuit, since it is located quite close and is very vulnerable to mechanical contacts. Specialists replace the controller only with the participation of fleece. In this case, the lower part of the element must be thoroughly wiped. Ethyl alcohol is not recommended in this situation.
Cooler service
Do-it-yourself repair of computer power supplies for the cooler is quite simple. To do this, first of all, remove the side cover from the personal computer. Then the uninterruptible power supply unit is disconnected directly . Coolers in it are currently installed the most diverse. However, they are mounted, as a rule, all on the side wall. In order to remove the device, you must use a screwdriver. However, there are usually four nuts on it.
After that, you can directly disconnect the cooler from the unit. However, it is important to ensure that its power cable does not interfere. It is best in this situation to immediately disconnect it. You can do this simply by lifting the port, which is located near the chip. After that, the cooler can be conveniently placed on the table for further work. First of all, it is important to remove the sticker, which is its additional protection. A small rubber gasket may be located underneath. Depending on the design of the fan, it can cover the connecting rod or rolling bearing.
In order to remove the sleeve, it is necessary to remove the protective ring that holds it. After that, the sleeve protrudes. At this stage it is necessary to watch that the washer does not fall on the floor. Then the cooler is cleaned with machine oil, and it must be assembled in the reverse order. After turning on the power supply, it is necessary to check the operation of the fan and make sure that it is working. If after all of the above actions he makes any sounds, then the device was not assembled correctly.
Power Choke Replacement
Repairing the PC power supply in terms of replacing the inductor can only be done using a blowtorch. In order to get to the specified part, the unit must be disassembled completely. Additionally, disconnect the inverter. The converter is removed from the chip last. The throttle for the block should be selected for a certain series. In this case, much depends on the power of the device. The contacts begin to solder precisely from the side of the microcircuit, and then the inductor is connected to the transformer. Subsequently, if the wiring is incorrectly soldered, the contacts can be reconnected.
Microchip inspection
Before you make a repair of the PC power supply, the chip is inspected without fail. In general, this part is rather complicated in its design. Given this, it is necessary to relate to the chip with special thrift. First of all, experts advise inspecting the resistors that are located next to the controller. In some cases, their contacts overheat. In general, you can check the performance of the chip simply by connecting a normal model.
Radiator Repair
The radiator in the unit breaks down quite rarely, however, such cases do occur. In this situation, it must be disconnected from the transformer. Only then can a person examine it. At this stage, only the base of the part is checked. In particular, it is necessary to inspect its platform for any defects. After that, the part is inspected from the top. If dark spots are visible on it, then the radiator has become unusable. To replace it, you must purchase a similar product in the store. It is attached to the transformer, as a rule, by a screw method. However, much in this case depends on the manufacturer.
How to check pulse transformer?
It is possible to repair the unit in terms of inspection of the transformer only if the cooler is disconnected in advance, since it will interfere in the future. After that, the transformer is inspected on the sides. If its contacts are dirty, then they must be cleaned. A regular eraser is ideal for these purposes. However, alcohol-based wipes can also be used. If this procedure does not help in the operation of the unit, then the transformer must be changed.
Transformer Controller Replacement
Replacing the controller at home is very quick. Of the tools for this procedure, you only need a Phillips screwdriver. The controller is mounted on the transformer with only one clamp. It is removed from the fuse quite simply, and great physical effort is not required. Next, it is important to clean the metal part and wipe it with a dry cloth. After that, it is possible to connect a new controller model. When you turn on the unit, the device should work quietly. If any noise appears, then the installed element is not suitable for the unit in its parameters.
Rectifier damage
The unit is being repaired as regards faults with rectifiers only in special workshops. At the same time, replacing it at home is also not possible. Given all of the above, you do not need to try to remove the rectifier from the chip. All this in some cases ends simply with a breakdown of the block. Specialists using a soldering iron and tweezers are able to remove this device without damaging the board.
After examining the rectifier, it will be possible to decide its fate in the future. As a rule, it is easiest to simply replace it with a new one. However, in this situation, the cause of its breakdown is taken into account. The rectifier itself does not break, and in parallel in the block they also go down the converter with a transformer. All this is a consequence of a sharp increase in the maximum voltage in the network.
Problems with Aerocool Blocks
The models of this company today are actively sold out. There is an average power supply unit (market price) in the region of 3 thousand rubles. The power of the usual model is at around 500 W, and the maximum load the device is capable of holding is 23 A. A common problem for these elements is considered to be the failure of the modulator. However, overvoltage transformers also often fail. In this case, the fans are installed, as a rule, reliable.
Blocks of the Zalman company
Zalman companies power supplies reviews are good. Many models of this brand with the maximum power are capable of boasting at a level of 550 V. At the same time, the maximum transformer load can hold at around 25 A. There is a powerful power supply from Zalman about 3200 rubles. Rectifiers in this case are installed broadband. In turn, coolers can most often be found without rolling bearings.
Their lubrication disappears quite quickly, and ultimately the uninterruptible power supply unit starts to work loudly. In such a situation, it is more advisable to disassemble the cooler and replace worn parts if necessary. The burnout of the converter is also considered a common problem with the blocks of this company. This is due to the banal increase in voltage in the wiring of the house. As a result, the transformer inside the unit may burn out additionally.