Power Supply
Power Supply
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Fool Proof Ways To Maintain Your Computer Power Supply!
Maintain Your Computer Power Supply!
What is a computer power supply? Also known as a PSU, it is the unit responsible for providing power to the computer and it's peripherals, by converting alternate current(AC), to direct current (DC). In other words, furnishing power to your computer, from the wall outlet.
Many people experience various computer problems, that may seem to be caused by viruses, driver issues, software incompatibilities and other "culprits", when a bad power supply is the actual cause!
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Let's discuss different signs of a bad, or failing – computer power supply:
- You hear "strange" sounds coming from the back of the computer, at the power plug.
- Your computer crashes (BSOD) randomly, for no apparent reason; and crashes more frequently when gaming, watching movies, editing pictures etc.
- Your computer turns on, then shuts off shortly after without booting successfully.
- Your computer restarts often, for no apparent reason.
- Your computer powers on, but sometimes fails to boot successfully. This can include constant "Bad Checksum" errors after booting.
- You smell "burnt" smells coming from your computer. (which could spell burnt or burning PSU circuitry)
- Your computer screen has strange "artifacts" such as pixelation, lines, colors, or any other visual effect not belonging on the screen. (i.e. video card power issue)
- You press the Power button, and nothing happens. Your computer doesn't power on, no lights, no fans spin…nothing.
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The above symptoms, are not the only signs of a bad computer power supply. Many times it is difficult to pinpoint the culprits of a "random" computer problem. Usually the best way to narrow an issue down to a power supply, is to swap hardware components, until the problem is solved. For most average computer users, swapping components isn't an option, so there has to be a better way!! Or is there?
YES THERE IS!
Choosing the correct computer power supply in the beginning – will prevent many headaches in the future, and we will show you how to do that in a different blog post. Taking proper care of your computer involves taking care of your power supply as well, since a computer power supply has a limited life span. We recommend doing the following:
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1.) ALWAYS use a surge protector.
Lighting, power outages, power spikes etc, can cause your power supply to fail prematurely, if a surge protector is not used at all times.
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2.) Keep your power supply clean.
It helps to keep a can of compressed air and blow air through the back of your PSU fan(see the picture on the right ). This will prevent dust, lint and other particles from collecting in your power supply, that prevent cooling and create more heat; which will contribute to power supply failure.
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3.) Make sure your computer case is properly ventilated.
A major cause of computer hardware failure is HEAT! Heat is responsible for a great deal of computer power supply failure, and should be kept at a minimum. Ensure all fans are running on the computer, and that no dust is collecting within the fins – disrupting air flow. Sometimes it helps to have a professional inspect your computer, to confirm proper airflow and "safe" case temperatures.
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4.) Never buy "cheap" computer power supplies!
A low cost power supply is usually NEVER worth the cost.
Many people that purchase a PSU after having theirs' fail, decide to buy a low cost unit to replace the failed unit. Computer power supplies that are "cheap" will actually cause other hardware components in your computer, to fail prematurely.
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**Specifications such as: Efficiency, 12V rail amperage, Wattage, Peak Output, Fan Size, are all very important factors when purchasing the correct computer power supply for your system. **
We will explain how to choose the correct power supply in a later issue.
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5.) Depending on the AGE of your computer…
It may be time to purchase a new power supply. Power supplies have a certain amount of "life-hours", and eventually fail. WHEN will your PSU fail, is the question. Better, more expensive power supplies have longer life spans, and could actually outlive your computer(s). Generic or "cheap" power supplies are many times unpredictable, and can fail anytime between the day that they are created and sold, up to several years later.
If you experience any of the above listed PSU problem symptoms, have your computer checked out by a professional. Many mediocre power supplies fail and destroy motherboards, CPUs, and other hardware simultaneously.
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Hopefully you are now armed with the knowledge to maintain your computer power supply, allowing your computer more "up-time", instead of preventable "downtime." Until next time, Happy Computing!
About the Author
Jarvis Edwards is a Senior Technician at TekTime, a mobile computer consulting and repair company, located in the Inland Empire area of Southern California. He has 12 years of computer and technology experience including computer repair, network setup/troubleshooting and more.
What power supply unit do you recommend with this computer?
I have a Pentium D dual core 3.0 ghz, An XFX 8600 GT 512 mb, 2 hard drives both western digital one is a 80 gb while the other is a 500 gb and running 1.5 gb ram... I currently have a 250 Watt power supply but it keeps getting spiked and burns out after 3/4 months of usage.
So what powersupply do you recommand with this computer?
Let's see what your max theoretical power draw is by heading over to my fave psu calc http://www.extreme.outervision.com/psucalculatorlite.jsp and putting in your components:
PD930 (3ghz) / 2 x ddr2 / 2 x hdd / 1 x dvdrw / 4 x fans / 8600gt
I get about 242W so you are definitely pushing that unit pretty hard.
I would get a unit that can handle at least that much on the +12v combined power such as one of these:
FSP Group SAGA+ 400R 400W http://www.newegg.com/Product/Product.aspx?Item=N82E16817104953
$37 w/ free shipping
This is a good budget choice, FSP is well known for reliability and can handle +12v@276w combined max http://c1.neweggimages.com/NeweggImage/productimage/17-104-953-18.jpg
If you can afford a nicer one this is an excellent choice
CORSAIR CMPSU-400CX 400W http://www.newegg.com/Product/Product.aspx?Item=N82E16817139008
$60 w/ $10 MIR & free shipping
it can handle +12@30A / 360W http://c1.neweggimages.com/NeweggImage/productimage/17-139-008-08.jpg and corsair needs no defending the quality of it's product.
If you didn't know already, the +12v is the most important since both the CPU and GPU get the power from the +12v - your old 250w is probably +12v@14A / 168W max, and your system is currently straining trying to keep up. Putting your total system draw as a guideline for the +12v max is a method that ensures your system will operate within the rated power for the power supply without getting a unit that is overkill, and will last for years to come. If you anticipate any upgrades, plug them into the PSU calc and reevaluate your power requirements then lather, rinse, repeat. Since not all power supplies are created equal, stick with brands (or at least OEM brands) that have a good reputation, and try not to be sold on the total wattage and focus on the +12v power handling.
cheers
Converted Computer ATX Power Supply to Lab Power Supply Unit