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Dell to ATX Power Supply Converter

Has anybode got a wiring diagram or can you make it for me for the above mentioned object I found on http://www.endpcnoise.com/cgi-bin/e/std/sim_search=dell%20power%20supply.html
I tried to order that thing but the site says that there was a mistake by calculating the shipping costs.

I'm living in the Netherlands so it is not an option to go tot Canada and buy it there.

Please help.

MDries

Posted by on

  • MDries Mar 10, 2008

    Thank you for your answer.



    My PSU is still working, but I want to put a standard ATX PSU in my Dell computer that has got +- 300 Watt. It is a Dell Dimension XPS T500 with a 200 Watt PSU. A standard ATX PSU does not fit because the wiring is completely different. That is why I asked if anybode had the wiring diagram for the connector that is shown on the site I put in my earlier mail.

    How many Watt is your PSU and are the 2 connectors for the motherboard present? If it is less then 300 Watt I don't need it.



    Greetings

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Disconnect the both the power supply wires from the mb ,
then short out the yellow and purple wires with tweezers or paper clip and watch the fan does it turn for a few seconds , if so the power supply is **t shutting down and is very likely ok.

If you need a supply with those conectors I have one for 5.00 and shipping ,I take paypal.
send me a tech buddy request on this forum for email.
I''v seen the pi**uts somewhere but that was many years ago and **body uses that supply much anymore.
I have ** idea what it cost to send a suppy to you.
those adapters came out late in the product life.

Posted on Mar 09, 2008

  • Karl Whisenand
    Karl Whisenand Mar 10, 2008

    I found it weird that so far 2 of my posts had the **'s in it.
    it makes it hard to read, I really did type it correctly.
    The one I have is the old version shipped with the computers something around 200 watts.
    as I was trying to say I have seen the wiring diagram posted before on the internet but that was a very long time ago.
    you might try google searching dell atx pinout.
    I found some that might answer your issue.

    http://pinouts.ru/Power/dell_atxaux_pino...
    http://pinouts.ru/Power/dell_atxpower_pi...

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How to make a pc power unit work without a motherboard?


There are two pins on the atx connector you need to bridge. You can wire a switch to the pins too if you want so you can toggle on and off. Otherwise, there is a guy on eBay (seller id: antronst) that sells a connector with the pins already bridged with a on/off switch and a resistor wired in to provide some stability for five or six dollars.
Here is a diagram. Make sure it is a standard atx power supply. Some old Dells had goofy wiring.
http://www.techpowerup.com/articles/other/22

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1 Answer

My dell dccy will not power on. It was working fine and was powered off but will not power back on. I have checked the power cord. I have opened the case and reseated all connectors. Pushing the power on...


Yes, it's called bypassing the Power On switch. Has nothing to do with the switch itself, or it's wires.

You use a jumper wire on the 20 or 24-pin ATX main power cable's connector.
Touch the jumper wire from the Green wire (Soft Power On) to ANY Black wire. (Ground)
(Soft Power On is abbreviated as PS_ON)

If the Power Supply comes on, the problem is the Power On switch.
If the Power Supply does Not come on, the problem is the Power Supply.

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

Look at the photos of the ATX main power cable plugged into the motherboard.
Where the wires go down into the connector is the Back of the connector.

This is where the jumper wire goes down into.

The jumper wire goes down into the socket hole, in the Back of the connector, RIGHT NEXT to the wire IN the socket hole.
The jumper wire has to go pretty far down in the socket hole.

[ATX power cable plugged into the motherboard, Power Supply plugged into power ]

At the end of every wire in the ATX main power cable's connector, is a metal terminal.

A Female Molex Crimp Terminal connector,

http://www.alibaba.com/product-gs/336134982/molex_female_crimp_terminal_connector/showimage.html

[You can click on the Zoom In icon { + } at the top to enlarge the view]

The jumper wire Must touch that metal terminal.
The jumper wire is made from a straightened out paper clip, bent into a U shape.
The middle of the U is wrapped a few times with Black plastic electrical tape.
This where your fingers hold onto the jumper wire.

(One wrap of Black plastic electrical tape is good for 600 Volts DC)

One 'leg' of the U shaped jumper wire goes down into the socket hole with a Green wire.
The other 'leg' of the U shaped jumper wire goes down into ANY socket hole with a Black wire.
(ALL Black wires are Ground wires)

The contact period made is no longer than 2 seconds.

The Voltage is 5 Volts DC.
Two flashlight batteries produce 3 Volts DC.

This is one generic ATX power on switch that I have found fits many computers,

http://www.directron.com/atxswitch.html

NOTE*

WATCH IT when buying an aftermarket Power Supply for your computer, if it needs one.
For a time period Dell was strictly a Proprietary computer manufacturer.
Dell wanted THEIR parts used in THEIR computers only.

They had the motherboard manufacturer switch the pins around in the ATX main power cable connector, on the motherboard.
They also had the Power Supply manufacturer switch the power cables around in the Power Supply.

This means if you plug an ATX main power cable, from an aftermarket Power Supply, into one of these proprietary Dell motherboards, you WILL fry out the motherboard!

Can also fry out the Processor, Ram Memory, and Harddrive. (Plus a graphics card if you have one installed)

CHECK the color code of the aftermarket Power Supply's ATX main power cable, to the color code of the Dell power supply.

See that the color code of the wires matches the socket holes in the connector.

Have further questions regarding this, post in a Comment.

Regards,
joecoolvette

Nov 29, 2010 | Dell Computers & Internet

1 Answer

Dell ATX(12v) power supply


The fact that it is made by Dell is irrelivent.

ATX is a standard and so are 20 and 24 pin motheroboard connectors.

You should find what you need by searching for: power supply unit on Wikipedia and Google.

Good luck!

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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

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1 Answer

Want to upgrade power supply on Dell Dimension 4700. Bought Rocket Fish RF-550wps 550 watt powersupply to install . Unable to proceede no schematics ror placing wireing


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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Hi guys
Thanks for your willingness.
I have found a cct diagram of a similar atx power supply which solves my problem.
Be Blessed
Andre

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