Question about Dell (EP071298) 320-Watt Power Supply

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Pinout for dell power supply with model number Ep071298

Hi:

I bought this Dell server atx power supply from a surplus store but am unable to figure out how to make it work without a PC.

All it has is a 36pin connector at the back. It is hoot swappable.
anyone know its pinouts?? or how to make this PS work?

Thanks !

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There are no wires, it's a big hot-swap plug.

Posted on Mar 14, 2012

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gripfitter
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SOURCE: Can you supply pinout for Dell AA23300 Power Supply ?

On the main plug there is a single green wire. Jumper the green wire to any black groung wire in the plug and the fan will start and you will have output.

Posted on Dec 20, 2009

6ya6ya
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Pin out for a dell PS-5201-8D2 power supply


Use caution, some older Dell machines used a non standard, proprietary pin-out on the 20 pin connector ALso the 6 pin is suspect. If you connect a regular ATX PSU, you will fry the MoBo. Look here
DELL ATX motherboard Power Supply pinout

Jan 23, 2013 | Dell (PS-5201-8D2) (PS52018D2) 200-Watt...

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Will a NVIDIA GeForce gt 610 graphics processor work on a Dell Dimension 2400 PC Desktop


YES, Zian it will work....BUT,....................

1) It is a PCI graphics card, and uses a PCI expansion slot.

http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=2898922&CatId=319

The Dell Dimension 2400 Desktop PC's motherboard, has three long white PCI slots,

http://support.dell.com/support/edocs/systems/dim2400/en/sm_en/techov.htm#1105465

http://www.ebay.com/itm/Dell-Dimension-2400-Desktop-Motherboard-System-Main-Board-F5949-K5148-G1548-/190750417467?pt=Motherboards&hash=item2c699c623b

http://en.wikipedia.org/wiki/Conventional_PCI

If one of those long white PCI slots is open, you can use a PCI graphics card.

Concerned that the graphics card uses DDR3 graphics memory, and your computer only uses DDR Sdram ram memory?

Don't be.

The graphics card has it's own processor (Graphics Processing Unit), and graphics memory.
It runs independent of the system resources; the Processor and Ram Memory.

http://en.wikipedia.org/wiki/GPU

The concern is the Power Supply.
Original power supply's maximum rated Wattage is either 200 Watts, or 250 Watts.

The above graphics card requires a minimum system requirement/power supply requirement; of 300 Watts.

I would recommend replacing the Power Supply.
(Especially with it's age, if it is still the same one)

http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=1389575&CatId=1078

ONE thing though..............
Watch the 20-pin ATX main power cable connector, and the wires in it. Be sure they are in the standard place setup.

Check the pinout, and color code of the wires,

1) Dell Dimension 2400 desktop computer, 20-pin ATX main power cable connector pinout,

http://support.dell.com/support/edocs/systems/dim2400/en/sm_en/techov.htm#1105612

2) STANDARD 20-pin ATX main cable connector pinout, and color code of wires; as set by JEDEC,

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain20

[Be aware that the ATX main power cable, and connector, you get with a new power supply; such as the above, will have a 20 =4-pin ATX main power cable connector,

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain20plus4

Use the 20-pin connector, tie the 4-pin power cable up out of the way]

For a time period Dell was making the motherboard's main power cable connector - Proprietary.
Meaning they has that motherboard connector wire pinout changed.
Colors of wires were in a different place, than the standard setup by JEDEC.

Orange wires are 3.3 Volts (DC)
Red wires are 5 Volts (DC)
Yellow wires are 12 Volts (DC)
Black wires are Ground wires.

Guess what happens if a 12 Volt Yellow wire, is plugged into where a Black Ground wire is supposed to be?

ZZZZZZzzzzt! Motherboard fries, processor fries, ram memory fries, and graphics card. (If used)

Check the color code of the wires, in the 20-pin ATX main power cable's CONNECTOR, for the Dimension 2400's power supply.

For additional questions please post in a Comment.
Regards,
joecoolvette

Nov 14, 2012 | Dell Dimension 2400 PC Desktop

1 Answer

Turn on my dell green light comes on and begins to open windows xp before it compltety opens it shuts down and the yellow light starts flashing , I turn off the computer and and let it set for a few...


Power Supply is bad Ron.

Electrolytic Capacitors inside the Power Supply are breaking down.

To wit;

Since you didn't state the model number, I'll just choose one for an example, and the Troubleshooting Tools and Utilities information;

http://support.dell.com/support/edocs/systems/opgx620/en/ug/A02/tindex.htm


http://support.dell.com/support/edocs/systems/opgx620/en/ug/A02/tools00.htm#wp1105370

http://support.dell.com/support/edocs/systems/opgx620/en/ug/A02/tools00.htm#wp1114432

Took you the 'Long way' to show you the steps in finding troubleshooting information. May help you in the future.

"Blinking Yellow - A power supply or system board failure has occurred"

Now about Electrolytic Capacitors;

The Electrolytic Capacitors used on your motherboard, (Unless some are solid Polymer capacitors), are Radial Aluminum Electrolytic Capacitors.

A basic example,

http://www.amazon.com/Gino-Radial-Aluminum-Electrolytic-Capacitors/dp/B006228QMY


Basic construction of a Radial Aluminum Electrolytic Capacitor:

A) The case is a thin aluminum cylindrical shape. Looks like an aluminum 'Coca-Cola' can with no top, or bottom.

Wrapped with a plastic sleeve.

B) The top is a flat thin aluminum round disk, and has a shape etched partway into it. Usually a lK or X.
This is the Vent Cover.

C) The bottom is a flat synthetic rubber disk, and is called the Bung.
The two leads of the capacitor come through the Bung.

D) Inside the case of the capacitor are three strips;
1) One strip is thin aluminum metal, and is called the Conducting Strip. It has the Positive ( + ) lead attached to it. (Lead - think wire)

2) The second strip is also thin aluminum metal, but has a non-conducting medium applied to it.
It is the Non-Conducting Strip, and has the Negative lead attached to it.

3) The last strip is a paper-like strip, and is soaked with Electrolytic Paste.

The paper soaked strip is laid in-between the two metal strips, and all three are rolled up tightly.
(In reality there are many layers of these strips)

When an Electrolytic Capacitor starts to fail, the Electrolytic Paste develops a gas inside the capacitor. Hydrogen Gas.
The gas expands, and starts pushing Electrolytic Paste out of the capacitor.

Either the lK or X of the Vent Cover will pop open, and paste will ooze out,
And/Or,

Paste will ooze out of the seal area, around the outside edge of the Vent Cover,
And/Or,

One side of the Bung at the bottom of the capacitor will be pushed out, and paste will ooze out.

So much paste loss, and the capacitor operates at a weakened state.
TOO much paste loss, and the capacitor fails.

A capacitor is designed to slowly build up a charge, then release it all at once.
Older camera designs use capacitors for their flash unit.

Another way of explaining, although crude, is a large swimming pool is slowly filled with water by a garden hose, then one wall of the pool is taken down all at once.

This is why a Power Supply can start to work, then fail.
Some of the capacitors inside are failing.

Just thought it would be better than stating, "Replace your Power Supply"

Do I recommend trying to repair the Power Supply?
NO
Dangerous (As in could KILL you), voltages are inside, even with the Power Supply unplugged from power, and for weeks, months, and over a year, after being unplugged from power.

Also clean the inside of the computer out with a can, or two of compressed air for computers. Computer unplugged from power, AND Anti-Static Precautions -> FOLLOWED.

The Power Supply in your computer is an SMPS.
Switched-Mode Power Supply
The two cooling components for the SMPS are Heatsinks, and a small internal Fan,

http://en.wikipedia.org/wiki/File:ATX_power_supply_interior-1000px_transparent.png

The Heatsink/s are shown in-between the letters B and C, and
C and D.
Finned aluminum 'blocks' connected together in a vertical line.
(Vertical line in the photo)

A Heatsink absorbs heat from whatever object it is placed against, and the fins of the Heatsink radiate the heat away.
The small internal fan helps carry heat away from the fins.

When in-between the fins, and around the fins of the Heatsink, are clogged with 'Gunk', and the Fan's blades, center hub, and surrounding cage (Shroud), are clogged with 'Gunk', the cooling capacity drops tremendously.

Just takes a light coat of 'Gunk'.
('Gunk' = Dirt, dust, hair, lint, etc)

Heat = Wasted Energy
The Power Supply tries to keep up with the call for power, but eventually cannot, and components inside start to fail.

For additional questions please post in a Comment.

Regards,
joecoolvette

[One more thing. Dell used to be a proprietary computer manufacturer. This means they wanted THEIR parts used in THEIR computers.

One design change they had made, was to change the standard pinout of the ATX main power cable, coming from the Power Supply.

Had the Power Supply manufacturer design, and make Power Supply's to their (Dell) ATX main power cable designation.

They also had the motherboard manufacturer, change the ATX main power cable connector pinout, on the motherboard.

Examples of both types of ATX main power cables that are used,

1) 20-pin ATX main power cable,

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain20

2) 24-pin ATX main power cable,

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain24

1) Orange wires are 3.3 Volts. (DC)
2) Red wires are 5 Volts. (DC)
3) Yellow wires are 12 Volts. (DC)
ALL Black wires are Ground wires.

You can see the Standard pinouts for the wires above in the links.

USING the Lock on the side of the ATX main power cable's connector, use it to orient the connector, and follow the pinout of those wires.

Are they the same as the ones in the links?

People with these older types of Dell computers in the past, were replacing the Power Supply, BUT not buying from Dell.
This means they bought aftermarket Power Supply's.

Wiring pinout for ATX main power cable did Not match.
MANY people burned out their computers.
'Smoked' the motherboard, Processor, Ram Memory, Harddrive, and a graphics card IF used.

Yes. People were SO happy! (?)
Dell changed pretty quickly.
Check your ATX main power cable.

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1) Dell power supply is unique , you can never replace with another regular ATX power supply
2) Please get 2nd handed Dell power supply from the same model. try ebay

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so long as it fits and the cables connect fine you should be able to use the new power supply

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Dell uses proprietary psu's. You will need to contact them for replacement psu or find a supplier that makes psu's that can be used as a Dell replacement. Hope this helps.

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Hi there.
Rocket Fish RF-550wps PSU is standard ATX power supply.
Dell tend to use their own power supplies which differ slightly from standard power supplies.
I suggest you take or send the Rocket Fish RF-550wps PSU back as it won't fit and order one from Dell themselves, at least then you will have a guaranteed fit.
Once you have your new power supply from Dell (or a Dell ATX power supply) it should be easy to fit in.
Post back if you need any more help.

Good luck and thanks for using FixYa!!

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A standard ATX power supply should resolve (It is the 1st item I'd replace, both because it is the 1st point of failure and the cheapest to replace)

Here is one ATX power supply:

http://www.newegg.com/Product/Product.aspx?Item=N82E16817182030

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