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How you can Recognize And Fix Power Supply Problems

by terhunetech on April 10, 2011

The Power Provide convert’s your normal household current into low DC voltage used through the computer. When this element fails,there’s simply no activity going on wih your computer.Keep in mind to complete the simple troubleshooting first.Inspect the Energy Supply for just about any harm.Double-Check all connections.

Studying how to check your power provide and how to replace it when required may be a life saver if you are a computer buff or in business using the trusted Computer.Don’t take for granted the easy pleasure of turning in your Pc and every thing works just fine.

We turned on one of our computer systems recently and in about 1 hour,it just re-booted by itself.And it continued doing so about 10 occasions each day till we discovered out the power supply was the culprit.Issues to look for when your energy supply is heading bad or simply dies on you’re the subsequent.

NO Energy Towards the Pc

Here you need to initial verify the wall outlet for power by connecting another gadget like a radio or lamp to be sure energy is present.In the event the pc is linked via a surge protector,check it as well.

If the wall out has power,check the energy cable going to the Pc to determine if AC voltage is generating its method to the system unit.Do that with the use of a multimeter.

If there is power,you’ll have to open the Computer and verify for energy from the power provide towards the motherboard.

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


1 primary issue you may encounter with the ailing Power Supply is that it might re-boot the computer without any warning.All info is misplaced and it seems as though this happens at the worst feasible time.

Booting errors once the computer initial start’s up is another indicator of this element going on the blink.

Energy DISTRIBUTION Problems

When the power provide begins to fail,you might obtain energy at 1 gadget and never another.For example,the Hard Generate may receive energy but the CDROM Generate has nothing whatsoever.

Another headache with would trigger re-booting is the intermittent power heading to the drives or the motherboard itself.Adhere to the actions below to verify your power provide ought to you experience some of the over problems.

CHECKING THE Energy Provide

If the wall outlet,and also the power cord are great,make sure the connection at the motherboard is safe.Then you may have to encounter the reality the power supply by itself is bad.If you have a Multimeter you are able to check the power supply output before buying a new 1.Merely adhere to these steps.

Turn off the Computer,but don’t unplug it,open the system unit. Set the multimeter to read DC volts in the next range greater than twelve volts.Locate a energy connector similair towards the hard generate,or cdrom generate connector that is unused and flip around the Pc.

You are able to also unplug a drive connector and utilize it as well.Flip 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 around the energy connector.

The multimeter studying ought to be 12 volts Now touch the RED probe to the RED wire and also the studying should be 5 volts.If no readings or various readings occured,you will have to replace the power provide.If the readings were right,you need to verify the P8 or P9 connectors at the motherboard. These connectors might also be named P4 and P5.To verify these connectors,carry out the subsequent…

Insert the BLACK probe into P8 at one of the BLACK wires. Insert the RED probe in to the P8 connector at the RED wire. The studying on the multimeter ought to be 5 volts

Verify the energy heading towards 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 in the P8 connector.Verify the BLUE wire and the studying should be a -12 volts.

Now move the BLACK probe to the BLACK wire around the P9 connector.Check the WHITE wire by inserting the RED probe and the studying ought to be -5 volts.Check the RED wires around the P9 connector and you need to get 5 volts on every red wire.You will not get exactly 5 or twelve volts however the readings will be very close, like 5.02 volts.

If the Power Supply is a couple of volts off,in both direction,such as once the RED wire should be studying -5 volts however it reads -8 volts,or if you will find no readings,replace the power supply.

Do not remove the power provide from the system unit case when executing these tests.Do not perform these tests if you do not feel comfortable.Be sure to eliminate any and all electrical static build-up out of your clothes and body Before touching any parts within the system unit.And By no means open the power provide case for just about any cause,since high voltage might be existing.

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