Question about Okia / 450-Watt / ATX / 80mm Fan / 20/24-Pin / Power Supply (OKIA450ATX) Power Supply

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How do I replace atx power supply?

The older atx power supply has more conectors that the new.

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  • dio dcs May 11, 2010

    The new ATX-E power supply has 24 pin connector and the ATX power supply has 20 pin connector (your older PS) . You can leave out the 4 pins by detaching it from the newer 24 pin ATX-E connector and plug the remaining 20 pins . The connector in any case is polarised that is wouldn't plug in the wrong way

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Yo dawg just do like buy a new connector and stuff you know what i mean dawg

Posted on May 09, 2008

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Atx 300w p4


Is it worth it? a new PSU shouldn't cost you more than 20 euro/ $ whatever part of the world you are in. Unless it has the old 3.3V conectors as well (which would be surprising) in which case find an old 2nd hand one.
If it is making a lot of noise it is probably failing due to dust and/or overheating and the rest of the PSU can't be in great condition either. Sometimes the non-eviromentally friendly option is the best one if you leave the old PSU for recycling , more so.
Good luck.

May 31, 2013 | Sparkle Power SPI Power Supply FSP300-60PN...

1 Answer

Name of wire based on color coding wire


Special (only on the ATX conector)
-Green is PSon(put a wire between green and black to turn the power on)
-Gray is PWRGOOD
-White is -5V(optional)
-Blue is -12V
-Purple is 5VSB(Always on when the PSU is plugged on)
Power
-Orange is 3.3V
-Red is 5V
-Yellow is 12V
-Black is Ground (0V)

Dec 20, 2012 | Lite On LiteOn 204Watt PA-4022-6B Power...

2 Answers

How to open atx power supply


Don't open it. Buy a new one if it's not working. If you touch the wrong thing in there you will die. I'm not kidding.

Jul 27, 2012 | HP ATX-300-12Z, ATX-300-12Z Rev. CDR, HP...

1 Answer

How do you disconnect HP ATX-300 power unit & replace with new


Here is a tutorial on how to replace power supplies.

http://www.hardwaresecrets.com/article/362

Apr 04, 2012 | HP ATX-300-12Z (ATX30012ZBD) 300-Watt...

1 Answer

I have presently a atx 350w power supply would yours solve my supply problem


If your ATX switch mode power supply is faulty then I suggest you replace it with a new one that is 350 watt or higher wattage.
Fixing faulty ATX power supplies is not a DIY project, there are dangerous voltages in these power supplies and can cause death or serious injuries.

Jan 30, 2011 | AMD Codegen 350W ATX P4 Recommended...

1 Answer

5VSB IS MISSINIG FROM MOTHERBOARD CONECTOR . COMPUTER WILL NOT BOOT WHEN POWER SWITCH ON FRONT PANEL IDEPRESSED . NEED A SCHEMATIC AND COMPONENT DIAGRAM FOR THIS UNIT .


specs are here
http://www.antec.com/specs/SP500_spe.html
This includes 5VSB
There is more info here
http://www.newegg.com/Product/Product.aspx?Item=N82E16817103937
the ATX spec and 20+4 connector pinout (wich locates 5VSB got you) can be found in the Wikipedia article (section 3 in http://en.wikipedia.org/wiki/ATX#ATX_power_supply_revisions has pin out details for ATX rev 2.1).
If your psu is missing 5VSB it is defective and should be returned to manufacturer or retailer if within warranty period. See testing psu articles also.

Jan 19, 2011 | Antec SmartPower SP-500 (ASKU37152)...

1 Answer

New replacement power supply makes continuous high-pitch sound


If the computer turns and works (other than the noise) then the wiring is correct. The ATX plug should be keyed so it is almost impossible to hook up incorrectly, and the wiring is for the most part standardized. However, there could be a problem if it is an older computer and your replacement power supply is from a Dell. Dell ATX power supplies, mostly from the PII to PIII era were not wired to the standard ATX pinouts. So, if you put a non-Dell power supply in an older Dell, or if you put an older Dell power supply in a non-Dell PC of any age, your wiring will not be correct. Usually incorrect wiring means either it fries or just doesn't start at all.

Specialized PC's or high end servers may also use non standard power connectors.

If you paid less than $40.00 for the power supply, the problem is most likely just a bad / poorly made power supply. Most of the budget power supplies are extremely cheaply made. They will sometimes have a lot of noise/whine/hum, and often fail quickly. In a lot of cases you will be able to tell the quality of the power supply just by the weight. The cheap ones are usually as light as can be. A good power supply will have some heft to it, as it will have large heatsinks and heavy duty components. If you have a Radio Shack nearby you could pick up a Thermaltake 300 to 450 watt power supply and try it and see if the problem goes away. They have a pretty flexible return policy. If you have a high quality power supply, it could be that you just got a bad one. Try another to confirm. If you try a Thermaltake and it still whines (and never made noise before this problem came up) then it could be that other components in the PC are near failure--possible as a result of your previously failing power supply. My experience though has been that unless the power supply popped (as in literally blew out) the motherboard and other internals aren't usually affected.
I am assuming here that the computer is starting up. If not, make sure that that all the necessary power leads are hooked up. Newer motherboards may have have a 20 or 24 pin main ATX power connector. They may also have a secondary 4-pin 12v connector to power the CPU. If you are mixing a really old or new revision power supply with an opposite age motherboard there may be a problem of not having the appropriate connections available.

Finally, if you are under-powered, you could also experience problems. What is the wattage of your new power supply and what type of computer/CPU? If you are running a 200 watt power supply to power a modern motherboard/CPU you may not be able to supply the power needed. This could result in a stressed power supply, which may make noise, or just power offs or system instability.

I very much recommend spending the extra dollars for a well made power supply. I have replaced many of the $20.00 units. Even if they say they are 350 or 450+ watts, they don't hold up. Often the computer will start random power offs and then the supply will fail completely. A good supply will usually come with a 5 year warranty and will be generally problem free.

Here is a link to a wiring diagram for the ATX plug--just to be complete.
http://pinouts.ru/Power/atxpower_pinout.shtml

Oct 03, 2009 | System Power Supplies

1 Answer

Bestec atx-250-12z rev d hp model 5187-1098 pc will not start up when pushing button on front of machine green led on back of p/s flashes with power cord plugged in. does this indicate a p/s failure?


I have already replaced mant Bestec ATX-250-12E power supplies because they have an internal failure. Consider yourself lucky if the thing doesn't power up your computer because it has a problem of imposing the +12 volt line onto the +5 Volt line then blowing out the mother board. Sometimes you aren't so lucky because once the damage is done then it is to late to just simply replace that piece of junk. I was lucky with my daughters E-Machine because if she tried pressing the start switch on the front of her computer it would sometimes come on and sometimes not. She just mentioned this to me and I immediately replaced that Bostec ATX-250-12E before it could do any damage to her computer. If anyone has an older E-Machine or an older Gateway machine then it would be a good idea to see if it uses that Bostec-ATX-250- 12E. If it does then go order another power supply, anything but a Bostec, and instead of a 250 watt order a 300 watt or better. I hope that this has helped those that might have this problem before it destroyes *********** boards. Marty

Mar 23, 2009 | Gateway Emachine Bestec ATX-250-12E PS...

1 Answer

Dell Optiplex G110 power supply unit replacement


Yes you can replace the old defective power supply with the new atx but the problem is the size. It the size it fit to your computer nothing to worry because power supply now is almost the same output only the wattages changes.

Apr 11, 2008 | Dell NPS-110AB (NPS110AB) 110-Watt Power...

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