Power supply troubleshooting and repair: Keep your computer running safely

Power failure is a common computer problem that can lead to data loss, hardware damage, or even more serious consequences. PHP editor Banana brings you a power supply fault diagnosis and repair guide, which will guide you to identify and solve different types of power supply faults. This guide covers troubleshooting steps, repair tips, and precautions to keep your computer running safely. By carefully reading the following, you will acquire the knowledge and skills you need to respond to power failures and ensure that your computer operates safely and reliably.

1. Power supply fault diagnosis and repair: protect the safe operation of your computer

Power supply is one of the indispensable and important components of the computer system. It is responsible for providing stable and reliable power supply to the entire computer system and is the basis for the normal operation of the computer. However, power failure is one of the common reasons why the computer cannot start or has various abnormalities. As a professional website editor, I will introduce you to the common types of power failures, diagnostic methods and repair techniques in detail to help you better protect the safe operation of your computer.

Common types of power failure

1. Power switch failure The power switch is a key component that controls the turning on and off of the power supply. If the power switch fails, the computer will not start normally. This fault usually manifests as the computer not responding after pressing the power button, or the power indicator light not lighting up.

2. Power supply output failure Power supply output failure means that the power supply cannot provide sufficient power to various components of the computer. This may be due to insufficient output power of the power supply itself, or due to aging or damage to the internal components of the power supply. This kind of failure usually manifests itself as the computer being unable to start, or suddenly shutting down during operation.

3. Power supply protection failure The power supply has various built-in protection circuits, such as overvoltage protection, overcurrent protection, etc., to protect the computer from power failure. However, if these protection circuits themselves fail, the power supply will not work properly. This fault usually manifests itself as a flashing power indicator light or an automatic power shutdown.

Diagnosis method of power failure

To accurately diagnose a power failure, you can take the following steps:

Check the power indicator light: If the power indicator light does not light up, the power switch or the power supply itself may be faulty. Check the power supply output: You can use a multimeter to measure the voltage at each output terminal of the power supply to see if it meets the standards. Check the power supply protection circuit: You can check whether the protection circuit is working properly through short circuit or overload testing. Replace the power supply: If no problem is found in the above checks, you can try to replace the power supply with a new one to troubleshoot the problem.

Repair tips for power failure

For some simple power failures, users can also try to repair them themselves. The specific steps are as follows:

Check the power cord and interface: Make sure the power cord and computer power interface are firmly connected and not loose or damaged. Clean the inside of the power supply: Use compressed air to clean the dust inside the power supply to prevent short circuit or overheating. Replace the power fuse: If the power indicator light does not light up, the fuse may be burned out and a new fuse needs to be replaced. Replace the power supply capacitor: If the power supply output is unstable, the capacitor may be aging and needs to be replaced with a new capacitor. Replace the power supply motherboard: If none of the above methods solve the problem, you may need to replace the entire power supply motherboard.

It should be noted that if you don’t know much about power supply repair, it is best to leave it to professional maintenance personnel to avoid further damage.

Summary

Power failure is one of the common problems that affects the normal operation of the computer. By understanding the types of power failure and mastering the corresponding diagnosis and repair skills, users can better protect the safe operation of their computers. I hope this article is helpful to you, thank you for reading!

2. Development of computer power supply

Development of computer power supply

With the continuous development of technology, computer power supply is also constantly improving. As one of the core components of computers, the development process of computer power supply is also a history of technological development. This article will take you to review the development history of computer power supplies, discuss its technical characteristics and application scenarios, and future development trends. 1. Early development of computer power supply The development of early computer power supply can be traced back to the 1950s. At that time, computer power supplies were relatively simple to design and manufacture, usually consisting of transformers, capacitors and rectifiers. With the development of electronic technology, computer power supplies have gradually become more complex, using more electronic components and technologies. Early computer power supplies were mainly used for computer hosts and peripheral devices, such as printers, scanners, etc. 2. Characteristics and application scenarios of modern computer power supplies The characteristics of modern computer power supplies are mainly reflected in aspects such as high efficiency, safety, stability and environmental protection. With the development of semiconductor technology, the power conversion efficiency of computer power supplies is getting higher and higher, making better use of energy and reducing energy waste. At the same time, computer power supplies also pay more attention to safety and stability, and adopt more protective measures and detection technologies to ensure the normal operation of computers and the safety of users. In addition, the design of computer power supplies also pays more attention to environmental protection, using more environmentally friendly materials and manufacturing processes to reduce the impact on the environment. Modern computer power supplies have a wide range of application scenarios, including personal computers, servers, supercomputers, mobile devices and Internet of Things devices. The advancement of computer power supplies not only improves the performance and reliability of equipment, but also promotes the development of related industries. 3. Future development trends of computer power supplies In the future, computer power supplies will continue to develop in the direction of high efficiency, safety, environmental protection and intelligence. With the development of green energy technology, computer power supplies will increasingly use renewable energy sources such as solar energy and wind energy, reducing reliance on traditional energy sources. At the same time, the intelligence of computer power supplies will also become a future development trend, achieving more intelligent management and control through artificial intelligence and big data technology. In addition, with the development of cloud computing and edge computing, computer power supplies will be increasingly used in cloud and edge computing platforms to achieve more flexible and efficient management and deployment. To sum up, the development process of computer power supply is a history of technological development. In modern society, computer power supply has become one of the indispensable technologies. In the future, computer power supplies will continue to develop in the direction of high efficiency, safety, environmental protection and intelligence, making greater contributions to the development of human society.

3. Computer power supply analysis

Computer power supply analysis

Computer power supply is an important part of the computer, and its performance directly affects the overall performance and stability of the computer. This article will conduct a detailed analysis of computer power supplies to help users better understand the performance and characteristics of computer power supplies, so as to choose power supply products suitable for their computers.

Types and characteristics of computer power supplies

Computer power supplies can be divided into different levels according to power size, such as 300W, 400W, 500W, etc. Different levels of power supply have different prices and performances. Users need to choose the appropriate power level according to their computer configuration. In addition, some advanced power supply products also have multiple protection functions, such as over-current protection, over-voltage protection, over-power protection, etc., which can better protect computer hardware from damage.

How to choose a suitable computer power supply

When choosing a suitable computer power supply, users need to consider the following factors:

Power supply: Choose the appropriate power supply power according to the computer configuration to avoid too high or too low power that will affect computer performance dropped or hardware damage. Brand and reputation: Choosing well-known brands and power supply products with good reputation can better ensure the quality and stability of the product. Heat dissipation and silent performance: For some high-performance computer configurations, it is very important to choose a power supply product with good heat dissipation and silent performance, which can ensure the stable operation of the computer and reduce noise interference. Interfaces and expansion capabilities: For some computer configurations that require additional expansion, it is very important to choose power supply products with rich interfaces and expansion capabilities.

Summary

As an important part of the computer, the performance and characteristics of the computer power supply are directly related to the overall performance and stability of the computer. When choosing a suitable computer power supply, users need to comprehensively consider factors such as power supply power, brand, heat dissipation and silent performance, interface and expansion performance. At the same time, for some advanced power supply products, their multiple protection functions can better protect computer hardware from damage. Therefore, choosing a suitable computer power supply is crucial to ensure the performance and stability of your computer.

4. Original components of computer power supply - understand the key components in computer power supply

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Introduction

Power supply is a vital component of computer hardware. It provides stable power to the computer and ensures that various hardware components can operate normally. To understand how a computer power supply works, we need to first understand some of its core components.

Capacitor

Capacitor is one of the important components in computer power supply. It is mainly responsible for storing electrical energy and releasing it to other electronic components when needed. The quality and capacitance of the capacitor determine the stability of the power supply. Common capacitors include solid electrolytic capacitors and aluminum electrolytic capacitors.

Rectifier bridge

The rectifier bridge of computer power supply is a component that converts alternating current into direct current. It consists of four diodes that convert the bidirectional flow of alternating current into unidirectional flow. The normal operation of the rectifier bridge ensures that the power supply can provide stable DC power to the computer.

Transformer

The transformer in the computer power supply is mainly responsible for converting electrical energy from alternating current to direct current of different voltages. It consists of a winding and an iron core, and the voltage is changed by the ratio of the turns of the winding. The stability and efficiency of the transformer have an important impact on the safety and performance of the computer.

Voltage stabilizing circuit

The voltage stabilizing circuit is one of the key components in the computer power supply. It is responsible for converting the unstable DC power from the transformer into a stable supply voltage. The voltage stabilizing circuit adjusts the size and stability of the output voltage by controlling the switching status of transistors, diodes and other components in the circuit.

Protection circuit

In computer power supply, the protection circuit is mainly responsible for monitoring and protecting the entire power system. It can detect abnormal conditions such as current overload, short circuit, and overvoltage, and take appropriate measures to protect the computer and power supply. The protection circuit is the safety guarantee in the power supply and provides guarantee for the stable operation of the computer.

Conclusion

Computer power supply is an important part of the computer, and its original components work together to ensure stable power supply and protect computer safety. By understanding key components such as capacitors, rectifier bridges, transformers, voltage stabilizing circuits and protection circuits, we can better understand the working principle of computer power supplies and how to choose a computer power supply that suits our needs.

Thank you for reading this article about original computer power supplies, I hope it will be helpful to you!

5. Computer power supply problem?

Thanks for the invitation

There is probably something wrong with your power supply. It may be an internal short circuit. It is recommended that you replace the power supply.

If the case you are talking about is static electricity, it’s not a big problem; if it’s not static electricity... then it’s leakage, which is a serious problem.

6. IBM computer power supply: How to choose the IBM computer power supply that suits you

The importance of IBM computer power supply

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For users of IBM computers, it is crucial to choose the power supply that suits their computers. As an important part of the computer, the power supply directly affects the stability and performance of the entire machine. Therefore, it is important to understand how to choose an IBM computer power supply.

Types of IBM computer power supplies

IBM computer power supplies usually come in two types: desktop power supply and laptop power supply. Desktop power supplies are usually ATX power supplies, while laptop power supplies have their own specifications and interfaces depending on the model.

How to choose an IBM computer power supply that suits you

1. Power: First, choose the appropriate power according to your IBM computer configuration to ensure that the power supply can provide stable power supply.

2. Interfaces and specifications: For desktop power supplies, pay attention to the interface specifications of the motherboard and graphics card; for laptop power supplies, pay attention to the size and shape of the plug.

3. Brand and quality: Choose a well-known brand and reliable quality IBM computer power supply to ensure stable operation of the computer.

4. Cooling system: The cooling system of the power supply also needs to be considered, especially when using high-performance IBM computers.

IBM computer power supply care and maintenance

Once you select a suitable IBM computer power supply, correct maintenance and upkeep is equally important. Clean the fan and heat sink of the power supply regularly to ensure that the vents are clear. Avoiding the accumulation of dust and debris can extend the life of the power supply.

Conclusion

Choose a power supply suitable for your IBM computer and perform correct use and maintenance, which can effectively ensure the stability and reliability of the computer, and also protect your hardware investment.

Thank you for reading this article. I hope the above content can help you better understand and choose IBM computer power supplies.

7. How to use the car fault diagnosis computer?

The operation method of the car computer tester is similar, and it is very easy to use. Connect the test computer and the car diagnostic interface. The method is: turn on the computer - select the car series to be tested - select the car model to be tested - select the system to be tested - —Read fault codes, data flow, component testing, matching. . . . In addition, if you still don't understand something, it is recommended to read the "operation guide" first, that is, the instruction manual! Comments to watch

8. Complete collection of computer motherboard fault diagnosis card codes?

Complete computer motherboard test card codes:

Generally speaking codes:

FF, 00, C0, D0, CF, F1 or nothing means the CPU failed

C1, C6, C3, D3, D4, D6, D8, B0, A7, E1 means that the memory is not enough

24, 25, 26, 01, 0A, 0B, 2A, 2B, 31 means that the graphics card is not enough

C1, C6, C3, 01, 02, this combination jumps in a loop Most of them are I/0 broken or BIOS refreshed

Extended information

Motherboard fault diagnosis card: It uses the detection results of the BIOS internal self-test program in the motherboard to display them one by one through the codes. Combined with the code meaning quick lookup table, it can be easily Quickly identify computer problems. Especially when the PC cannot boot the operating system, the screen is black, and the speaker does not beep, using this card can further reflect its convenience, allowing you to get twice the result with half the effort.

BIOS performs self-test on the system's circuit, memory, keyboard, video part, hard disk, floppy drive and other components every time it is turned on, analyzes the hard disk system configuration, and initializes the configured basic I/O settings. Everything is normal. Then boot the operating system. Its distinctive feature is that the critical components are tested first based on whether the monitor can display.

The failure of a key component forces the machine to shut down. If there is no cursor on the display, the screen will not respond. Then, test the non-critical components, continue to run the faulty machine, and insert the card into the expansion slot when the monitor has no display. According to the code displayed on the card, refer to which BIOS your machine belongs to, and then find out the cause and location of the fault represented by the code, you can clearly know where the fault is.

9. Computer power supply selection?

Depending on the hardware configuration of your computer, a brand power supply rated at 400W will definitely be enough. It's just Delta's NX450 power supply, which uses dual 12V output power supplies. Although its rated power is 450W, its +12V1 output current is only 20A (a reminder, for this kind of power supply with dual +12V output, its +12V1 is used to power the graphics card), so it is paired with GTX1060 For this kind of mid-to-high-end graphics card, there is absolutely no guarantee that it can work stably for a long time. I suggest you take a look at Huntkey JUMPER 450B, Gaming Blade 50 AK450, Cooler Master GX-450W, and FSP Classic PLUS 450W. They all have good performance and can definitely meet the power supply needs of your computer. .

This is the information on the label of the Delta NX450 power supply, you can take a look. In short, this power supply definitely cannot meet the power supply needs of the i5 8500+GTX1060 platform.

Let me show you the nameplate information of several different brands of rated 450W power supplies.

Huntjia JUMPER 450B

FSP Classic PLUS 450

Nowadays, even the brand power supplies rated at 400W have adopted a single 12V output. For this kind of single-output power supply, its +12 output terminal is used to power the CPU and graphics card at the same time. Therefore, when purchasing a power supply, you must combine the actual power consumption of the CPU and graphics card, so that it can Buy a suitable power supply.

The following is the approximate power consumption of the i5 8400+GTX1060 platform when it is fully loaded, you can refer to it. A little reminder, the actual power consumption of different brands of GTX1060 graphics cards is slightly different.

10. How to choose a computer power supply?

Calculate the size of the power supply using special power calculation software, and then multiply the excess by 115%. For example, if the multiplication is 425w, buy a 450w one. If you use AMD graphics card or CPU, it is recommended to add 10%.

As for the brand of power supply, I currently use Haiyun, but Zhenhua is also acceptable. Taiwan’s power supplies are more conscientious and have no love for the mainland.

It is best to have energy consumption certification (80plus), which is divided into white, bronze, silver, gold and platinum.

Load 20% 50% 80%

Conversion rate Conversion rate Conversion rate

White card 80% 80% 80%

Bronze medal 82% 85% 82%

Silver medal 85% 88% 85%

Gold medal 87% 90% 87%

Platinum 90% 94% 91%

I think it’s good for ordinary users to have a white or bronze power supply. For those who are a little more luxurious, they can get a gold power supply. Platinum enthusiasts prefer it.

But don’t be superstitious about the 80plus certification of the power supply. Some manufacturers are very serious about the power supply they send for certification. After obtaining the certification, the mass production is reduced.

So the market price is the ultimate criterion for measuring a power supply. Of course it cannot be the price when being ripped off by JS.

In short, a power supply of 1w/0.8 yuan or more is more reliable, 80plus is more reliable than nothing, and Taiwan’s big brands are more reliable. Also, I am the little tail of Chen Socks upstairs. Because I follow her, I pick a few of the questions she answers that I know how to answer. (๑• . •๑)

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