Power Supply - DIY Diagnosis And Actions by Robert Thatcher
Power supply is found on every personal computer. It is device where power is received from the alternating current and converted to direct current that is useable by the computer. It is located inside the CPU distinguished by cooling fan and the power-cord receptacle. ... It is cheaper to buy power supply than to replace the motherboard so you should be thankful your motherboard does not accept the power supply. ... One most common symptoms of power supply failure is the inability of power to come on.

Computer Power Supply: How Much is Enough? by Michael Quarles
You may be wanting to build a new PC, or upgrade the unit you have now. Since computers require more wattage than ever before, concerns about your power supply are sure to surface. The question "How much is enough?" has to be answered. Fortunately, simple math, and the numbers I'll supply with... If, for instance, you planned on salvaging an older case with a 250 watt power supply, and wanted to base your unit on a Pentium 4, you better think again. ... Not having enough power can mean a fried computer.

Taking the Guess Work Out of Computers With Hardware Issues by Cory Mioc
Today many computer technicians are frustrated with the unpredictability of various computer problems due to the environment that computers operate in today. Because 90% of all computer users in the United States use it to surf the internet, many computers get infected with malicious programs... The power supply tester can inform you in 5 seconds if the power supply is in fact functioning properly. ... The first step is using our ATX power supply tester to determine if the power supply is bad. ... The power supply could be bad and not supplying adequate power to the motherboard or other...

Buying A Desktop Computer-What I Need To Know? by Vickie Scanlon
If you are working on the Internet or even if your job entails being in front of a computer on a daily basis, then you know that your desktop is an important asset to the way you make your living. With that being said --what exactly are some of things to consider when buying a computer? ... Power Supply I know it may seem strange for many to hear someone advise you about, of all things, your computer's power supply, but your power supply is important. ... Thus, if the power supply is not adequate, and your computer is running at peak capacity all the time, it can cause data corruption,...

Computer Memory Problems by Michael Russell
In this article we're going to concentrate on why and how memory goes bad and what causes memory problems. If you've ever worked on a PC and all of a sudden in the middle of blasting the heck out of some space invader your PC goes black and then suddenly reboots look no further than some kind of... If you have a defective power supply, or one that is just plain cheap, what happens is your power supply may fail to filter out the noise that can mess up your computer system. ... One of the main reasons for memory failure is the power supply of the computer.

Cheap PCs - Bargain Today, Heartache Tomorrow? by Michael Quarles
Maybe you saw an ad in the local paper. A big electronics store was selling a certain model of PC at rock bottom prices. Now’s the time to get one, you figure. Why put it off any longer, particularly when they’re so cheap? To save you some heartache later, let’s take a close look at that cheap... Answer me this: do you know how much wattage the power supply in your current machine produces? ... Like the power supply. ... This is a real problem if you want to do an upgrade later, but your power supply can’t handle the additional draw.

Learn How To Diagnose Power Supply Problems by Otis F Cooper
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 wih your computer.Remember to do the easy troubleshooting first.Inspect the Power Supply for any damage.Double-Check all connections. ... CHECKING THE POWER SUPPLY 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...

ATX Power Supply Repair And Troubleshooting by Jestine Yong
Customer ATX power supply came in with the complaint of intermittent no power. When testing it with power on, I could see that the fan is not rotating. Not only that, some filter capacitors also became bulge because of the heat accumulated inside the power supply. ... If you switch off a working power supply and power removed, touch the power transformer, you could feel it is quite warm. ... After replacing the capacitors, removed the decayed glue and service the fan, the Atx power supply again given a new life to faithfully serve the computer.

What's a USB Hub? by Iggy Quazi
Since the mid 90's we have seen the birth and growth of a connective technology called Universal Serial Bus (USB). Originally designed to connect computers and telecoms equipment, it has slowly become the primary means of connecting a whole host of other devices and has made significant... The only difference is that the Powered Hub comes with a separate power supply that must be plugged into the mains socket, supplying the power to all the USB ports on the hub allowing ANY type of USB devices to function properly.

Understanding TOP223P And PQ05RD11 IC In Thompson DVD Power Supply by Jestine Yong
The TOP223P pulse width modulation ic is designed to work in switch mode power supply (smps). It is mainly used in the audio/video electronic equipment. Computer monitor rarely use this type of ic. In this article, I would like to share with you that not all switch mode power transformer must... Conclusion-Troubleshooting power supply that used the TOP223P ic or other family type is very easy if you understand how power supply work and if you have the schematic diagram of a particular equipment.