Category: Power Supply PC

Learn Basic Knowledge to Repair Power Supply PC

pc power supply repair fixing

Repair Power Supply PC 101

Do you want to learn about repair power supply pc? Passionate computer geeks and even regular users rarely think about their systems’ power supplies, because, for most of the time, if things go smoothly and the computers boot and power up, nobody really cares about those boxes in the units.

There is often confusion as to the importance of these power supplies, since, most of the times they don’t influence the way the computers behave as other sub-ensembles, like the motherboard, the graphics cards, the hard drive and so on.

But the fact is that when the power supply is a powerful one, exceeding 600 watts, with a level of power efficiency above the 80, 85% range, buying a new one can be a real hassle.

The supply repairs are thus vital for keeping one’s budget down, especially of the unit is a quality one, one that delivers power to a serious enthusiast or above system.

In terms of issues that can occur with the supply, a few are more common: the cables can rupture, or have their sleeves cut or shorted.

Better power supplies offer protection against electric surges, over voltages and other calamities, but these too can suffer when an actual larger than usual discharge happens.

power supply pc problems and repair

Most of the times however, the power repairs are demanded when suddenly the PC won’t start and the other components are not at fault.

In these cases the power supplies can have a condenser blown or some wiring ruptured and much more.

Modern and quality power supplies are very intricate electric and electronic devices, often times containing chips which guarantee a clean current delivery to many of the components on need of being powered.

But generally, the most demanding components are the high end graphic adapters as well as the motherboard.

In an effort to protect a computer or other electric installations from closing unexpectedly or to protect them from electrical surges, the UPS (uninterruptible power supply) is used as an electrical buffer to this end.

The UPS repairs are oftentimes tasked either with actual repairs of these units but also with maintenance tasks such as replacing exhausted battery packs inside them, changing fuses or other components.

fixing pc power supply

Knowing the separate components of your laptops power supply as well as what each does will ultimately save you a lot of heartache and money in the long run.

Many people take their power supply for granted until their computer starts powering off at odd times for seemingly no reason at all.

Arm yourself with the basic knowledge about each piece and it can help you diagnose simple problems that may arise.

The first thing that you need to consider when you are looking at your power supply is the power strip that you plug into the wall.

This will help regulate the amount of power that goes into your computer and prevent potentially fatal power spikes.

Many people think that they can skip this component of their laptops power supply, but once they lose a valuable electronic device due to a power surge, they often never go without.

The next thing in line is the AC power adapter. This is another point that helps regulate the amount of power going into your computer.

It will also convert the alternating current from your wall socket and turn it into direct current that your computer will use to power the laptop as well as to charge the battery.

Once the power enters your laptop through the female adapter, the point at which your power cord ends and your laptop begins, the power is routed to the computer power board.

This piece of hardware serves two functions: one to send power to the mother board; and two to send power to your battery for charging.

female adapter power supply pc

Another often overlooked piece of hardware that is part of your laptops power supply is the computer cooling fan. The cooling fan makes sure that your computer doesn’t overheat.

Overheating problems will cause your computer to power off at odd times. The processor for your computer is usually the element that will generate the most heat in your computer so if you ever decide to get a stronger processor.

It is very important that you check and make sure that the computer cooling fan you have installed in your laptop is strong enough to properly cool your laptop.

Other issues that people commonly encounter with the fan is that the intake gets clogged with hair and dirt or the intake gets covered up to the point the fan is rendered ineffective.

This can actually cause a couple of different situations that may cause your computer to suddenly shut down.

Learn to Diagnose Power Supply PC Problems

The Power Supply convert’s your regular household current into low DC voltage used by the computer. When this component fails,there is simply no activity going on with your computer.

Remember to do the easy troubleshooting first.Inspect the Power Supply for any damage.Double-Check all connections.

Learning how to check your power supply and how to replace it when needed can be a life saver if you’re a computer buff or in business with the trusted PC.

Don’t take for granted the simple pleasure of turning on your PC and everything works just fine.

how to repair power supply pc

We turned on one of our computers recently and in about one hour,it just re-booted itself. And it continued doing so about 10 times a day until we found out the power supply was the culprit.

Things to look for when your power supply is going bad or just dies on you are the following.


Here you must first check the wall outlet for power by connecting another device such as a radio or lamp to be sure power is present.

If the computer is connected through a surge protector, check it as well.

If the wall out has power, check the power cable going to the PC to see if AC voltage is making its way to the system unit.

Do this with the use of a multimeter.

If there is power,you will have to open the PC and check for power from the power supply to the motherboard.

When using a multimeter to check voltage,be sure you have a good ground for the black lead of the multimeter.


One main problem you may face with an ailing Power Supply is that it may re-boot the computer without any warning.

All information is lost and it seems as though this happens at the worst possible time.

Booting errors when the computer first start’s up is another indicator of this component going on the blink.


When the power supply begins to fail,you may receive power at one device and not another. For example,the Hard Drive may receive power but the CDROM Drive has nothing at all.

Another headache with would cause re-booting is the intermittent power going to the drives or the motherboard itself.

Follow the steps below to check your power supply should you experience some of the above problems.


If the wall outlet,and the power cord are good,make sure the connection at the motherboard is secure.

Then you may have to face the fact that the power supply itself is bad.If you have a Multimeter you can test the power supply output before purchasing a new one.Simply follow these steps.

Turn off the PC, but do not unplug it,open the system unit. Set the multimeter to read DC volts in the next range higher than 12 volts.

Locate a power connector similair to the hard drive,or cdrom drive connector that is unused and turn on the PC.

You can also unplug a drive connector and use it as well.Turn on the PC and insert the BLACK probe into the power connector on one of the BLACK wires.

Touch the RED probe to the YELLOW wire on the power connector.

The multimeter reading should be +12 volts Now touch the RED probe to the RED wire and the reading should be +5 volts.

If no readings or different readings occurred, you’ll have to replace the power supply.If the readings were correct,you should check the P8 or P9 connectors at the motherboard.

These connectors may also be named P4 and P5.To check these connectors,perform the following…

Insert the BLACK probe into P8 at one of the BLACK wires. Insert the RED probe into the P8 connector at the RED wire. The reading on the multimeter should be +5 volts

Check the power going to the Motherboard connections by inserting the RED probe into P8 at the YELLOW wire and you should get +12 volts.

Leave the BLACK wire touching the black wire at the P8 connector.Check the BLUE wire and the reading should be a -12 volts.

Now move the BLACK probe to the BLACK wire on the P9 connector.Test the WHITE wire by inserting the RED probe and the reading should be -5 volts.

Check the RED wires on the P9 connector and you should get +5 volts on each red wire.You won’t get exactly 5 or 12 volts but the readings will be very close, such as 5.02 volts.

If the Power Supply is a couple of volts off, in either direction,such as when the RED wire should be reading -5 volts but it reads -8 volts,or if there are no readings, replace the power supply.

DO NOT remove the power supply from the system unit case when performing these tests.

DO NOT perform these tests if you do not feel comfortable.Be sure to remove any and all electrical static build-up from your clothes and body BEFORE touching any parts inside the system unit.

NEVER open the power supply case for any reason,since high voltage may be present.

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Choosing The Right Types of Computer Power Supply

pc power supply types

Types of Computer Power Supply

The important use of Power Supply is often forgotten by PC users, sometimes users only use the default power supply casing, even though the average default power supply casing does not have pure power, good components and etc which are not good for PCs. That’s why choosing the right types of computer power supply is important.

Power supply is a hardware task to channel electricity directly to computer hardware that requires electrical voltage such as a motherboard, hard drive, dvd room, etc. Why this component needs to be underlined in the use of PC is because there are many types of computer power supply.

The function of the power supply is to convert alternating electric current (AC) from electricity company into direct current (DC) and then it is channeled to components that need electricity supply. Another function possessed by the power supply is as a stabilizer or stabilizer of electric current.

As we mentioned earlier, the work of Power Supply is to convert large electricity to small electricity which is later received by VRM in the component. If the electricity that is changed is bad, then the electricity flowed will become unstable.

Choosing the bad types of computer power supply can cause an “overvoltage” symptom, “over current”, contains a lot of noise until the most dangerous sparks come out such as burning, smoke coming out etc. which can endangers us.

power supply pc 350 watts

The damage does not only occur on us but bad types of computer power supply is also ultimately will have an impact on the components such as following because the VRM of each PC component has different strengths and not all have extra protection.

For example is for the Hard drive. The VRM on this hard drive is mini-sized, generally not resistant to bad power supply, resulting in a damaged hard drive motor performance, bad sectors etc. the worst is the hard disk is broken.

There are many users who have been affected by the problem of bad types of computer power supply. As the result Hard drive suddenly dies and important data is lost. This kind of accident is absolutely must be avoided by them who save important files.

The other component affected by the bad types of computer power supply is the graphic card. Many people have tried using a “cheap” Power Supply with a power rating of only 450W for high-end graphics cards. Even though the high-end graphics card has become more economical, the user doesn’t care about power supply.

To maintain the performance of your computer for long period, we have to understand types of computer power supply. There are 4 types of functions, related to the stability of the electric current on the computer, namely Over Voltage Protection / OVP that has the function of protecting the PSU from excessive voltage.

ocp pc power supply

This Over Current Protection / OCP in many types of computer power supply has the function of preventing damage due to the entry of high electric current with other component with specific functions such as Over Temperature Protection / OTP and Short Circuit Protection / SSP. The PSU also has an important role to play in controlling the size of the voltage entering the computer.

Unfortunately, there are still a few users who know how vital this PSU is. As a result, the average age of personal computers (PCs / PCs) are relatively short or short simply because they chose the wrong PSU or do not know the right types of computer power supply.

Judging from the understanding and convenience, it is not wrong if this device is called the heart of the computer. So do not choose the wrong types of computer power supply especially if you are PC builders.

What is Types of Computer Power Supply?

A. AT Computer Power Supply

AT stands for Advanced Technology. This types of computer power supply is classified as an old school type and is hardly or rarely used today. Having a 12 pin connector is called an AT power connector. PSU AT is used on Pentium I, Pentium MMX, Pentium II and Pentium III computers.

Characteristics of PSU AT:
The power cable for the motherboard consists of 8 – 12 pins.
The ON / OFF button is manual.The average power is below 250 watts.
When shutdown, the PC does not automatically turn off but still has to press the button to turn on the case.

B. ATX Computer Power Supply

ATX stands for Advanced Technology eXtended. This types of computer power supply Is equipped with a 20 pin connector, called an ATX power connector. The ATX PSU is used on computers with Pentium III, Pentium IV and AMD CPUs.

Characteristics of ATX PSU:
The power cable for the motherboard consists of 20 pins.
When shutdown the PC will automatically shut down.
Has greater power.

C. BTX Computer Power Supply

BTX stands for eXtended Balanced Technology. This types of computer power supply has 24 pin connectors, called BTX power connectors. It is also equipped with SATA 15 pin power connector. ATX is used on computers Dual core, core 2 duo, Quad core, i3, i5, i7 CPU and the latest AMD models.

Right now, BTX is the most widely used types of computer power supply today. What distinguishes it from the AT PSU is how to install the cable power to the motherboard that is easier and more practical. No need to worry about being reversed, because the type of connector on the cable has been adjusted to the type of slot that is on the motherboard.

Characteristics of BTX PSU:
The power cable for the motherboard consists of 24 pins.
When shutdown the PC will automatically shut down.
There are additional power SATA.
Greater power.
Better efficiency.

Those are some types of computer power supply that you need to know. So don’t buy wrong PSU, adjust your type and PC.

Understanding better about PC power supply for gaming


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Understanding Power Supply Definition and Function

power supply pc definition

What is a power supply Definition exactly?

Understanding Power Supply definition as one of the hardware in a computer device that has a role in providing the supply of power. Usually this power supply component can be found on a computer case and is square.

what is power supply pc definition

In the power supply definition, basically, it requires an electricity source which is then converted into energy that drives electronic devices. The system works quite simply by changing the power of 120V into the form of flow with power according to the needs of these components.

The power supply definition accordance with the understanding of the power supply on a computer, the main function is to convert AC current into DC current which is then converted into power or energy needed by components on a computer such as a motherboard, Room CD, Hard drive, and other components.

Power Supply Function on the Computer

In Indonesian, Power Supply definition means Catu Daya. The function of the power supply is to provide electrical current power to various components or hardware contained in the computer case.

PC power supply function

The source of electrical energy originating from outside is still in the form of alternating current (AC). When electrical energy enters the power supply, the electricity will be converted into direct current (DC). DC power is then channeled to all components inside the computer case to work.

One the side of the power supply there is a fan that is useful for removing hot air from inside the computer case. In addition, in the power supply there is also a male port type IEC 60320 C14 which functions as a connector between the electrical energy source and the power supply.

Components of Power Supply

Referring to the notion of power supply definition and function, this hardware functions to convert AC current into DC current and distribute it to various computer components inside the chassis. To form a voltage, several components are needed, while the power supply components are as follows:

1. Transformer
This is a component inside the Power Supply that is used to move electricity between two electrical circuits or more through electromagnetic induction.

2. Diodes
This is a combination of two electrode words, namely the anode and cathode. The nature of the diode is to deliver current to the forward voltage and inhibit the current at the reverse voltage flow.

3. Capacitors
Capacitor serves as a complement to the delivery of AC voltage to DC voltage.

4. Resistor
Resistor is a device that helps the Power Supply to reduce voltage, divide the voltage, and limit the incoming electric current, so it will be able to control the hardware on the motherboard.

5. Regulatory ICs
IC Regulator serves to regulate the voltage in the electronic circuit always remains stable.

6. LED
Power Supply LEDs are semiconductor diode-like components that have special features

Power supply definition can be classified into two types, namely:

a. Internal Power Supply
This type of power supply is made integrated with the motherboard or main circuit board. Example; skill, television, DVD Player; the power supply is integrated with the motherboard in the case of the device.

internal pc power supply

b. External Power Supply
This type of power supply is made separately from the motherboard of an electronic device. For example a Laptop charger and an HP charger.

Types of Power Supply

Based on its function, there are two types of power supply definition that are commonly used on computers and both have significant differences.

The types of power supply are as follows:

a. AT Power Supply
You could say this is the type of power supply that was first used on types of computers in the past such as the types of Pentium II and Pentium III in the year ’97. So that for now the use of AT Power Supply has not been found in the latest types of computer equipment.

at power supply definition

This type of power supply definition has some characteristics:
Has 8-12 output terminals connected to the computer motherboard
Generally it has power below 250 watts
Because the power button On and Off is connected to the computer case, then it must be done manually when shutting down the computer.

b. ATX Power Supply

ATX Power Supply is an update of AT Power Supply types. This power supply definition has a more complex design with a more efficient source of electrical energy supply.

atx power supply pc

ATX Power Supply now is found on the latest generation of computers where the operation can be controlled with software that is installed on the computer. So that it can be set in several modes such as sleep mode, standby mode and mode when the computer is turned off.

Characteristics of ATX Power Supply:

Has 20 to 24 output terminals connected to the motherboard
Use more power
When the PC is shut down, the power supply will completely shut down automatically

How Power Supply Works

According to Power Supply definition and function, when the user turns on the power on the computer, the power supply will carry out checks and tests before running the computer system. If the test goes well, the power supply will send a signal (power good) to the mainboard as a sign that the computer system is ready to operate.

Furthermore, according to the power supply definition and its function, power supply will divide the power according to the capacity required by each computer component. In addition to delivering electrical power to computer components, the power supply also maintains the stability of electric current in various components.

From the explanation of power supply pc definition and its functions above, this component is as important as the CPU on a computer that is often considered a computer brain. If there is interference with the power supply, it will cause interference with the flow of power on computer components.

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5 Best Options For PC Power Supply Gaming

pc power supply for gaming

PC Power Supply Gaming Recommendation

The power supply unit, better known as the PSU, is one of the most important components in computer especially for gaming as a power supply distributor directly to all hardware components installed on the PC.

In addition, the PSU also has a vital role to play in determining the amount of electricity that goes into the computer.

Because of it, choosing the best PC power supply gaming must be accurate in order to get the best performance for PC gaming.

The role of the PSU certainly must be considered, because the PSU does not only determine whether your computer can turn on or not, but the PSU can also be an indicator of how long the components of your computer are.

Here are some recommended PC power supply gaming you can choose to build your PC’s performance.

What are they? Here are 5 Best PC Power Supply Gaming

PC Power Supply SuperNOVA EVGA NEX1500

EVGA is a company that avoids common designs since most of their products are uniquely designed in order to bring large smiles to the faces of enthusiast users all over the world.

Some of the most interesting characteristics of the NEX1500 include the 1500 W capacity, which increases to 1650 W with 230VAC power input, Gold efficiency, the ability to switch between single or multiple +12V rails, a fully modular design that uses individually sleeved cables of extra high quality, a huge number of PCIe connectors (16!), a SANYO DENKI ball-bearings fan, and the SuperNOVA software through which you can monitor all vital aspects of the PSU.

SuperNOVA also gives you the option to change the fan profile and adjust the voltage of the +12V rail. As you can see, this PSU is indeed special and has many aces up its sleeve.

The new NEX1500 is made for you if you own a suitable mainboard (e.g. an EVGA Classified SR-X) and three to four ultra high-end VGAs.

This PSU is the strongest of its kind on the market today and comes with enough power to support not only four, but eight VGAs (for future mainboards). It surely has a high price-tag but is still priced lower than a high-end graphics card, and you will keep the PSU for much much longer

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