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PSU I have a dell dimension 4550 and recently I tried to up grade the power supply by buying a Turbolink ATX 2.03 500W PSU. When I intstalled it, the computer would not turn on. I made sure all the connections were right and that when I connected the power I had the case open to make sure the motherboard light came on and it did, but the computer fan did not turn on and no boot up processes were started. Is there anything I can do to make this power supply work?

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You can try to rearrange from ATX form to dell form.
Here is ATX arangement
http://en.wikipedia.org/wiki/Computer_power_supply#Wiring_diagrams
and here is dells arangement
http://www.jdresearch.com/icon/shark20pin.jpg

Posted on Jan 31, 2008

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Computer shouts down in 15 to 20 seconds after starting


The specs say the PSU is ATX compatible. Whether that is for the connector only or for the whole power supply is something you will have to determine.

If you have an ATX power supply handy (like in an old computer) give it a try. This one is only 300 Watts so it won't likely be expensive to replace.

Have a look at: http://www.techspot.com/community/topics/dell-dimension-1100-shuts-down-after-20-seconds.135987/

Aug 28, 2012 | Dell POWER SUPPLY Power Supply

1 Answer

My dell dimension b110 quit working one day and just flashed an amber colored light. I was told I need to replace the power supply. Is any 400W 20+4-pin ATX PSU w/SATA compatible?


Yes, just make sure it's ATX (not ATX mini etc but you'd see from the connector anyway) has the right motherboard connector and all other connectors. Also I'd go for a 450W as if your 400w died it may have been from a power surge that a 450W or higher would handle better.

Oct 29, 2010 | Dell Dimension™ B110 PC Desktop

1 Answer

I am looking at a Dell Dimension 4550 PC for a friend and it won't boot up...i push the power button on and there is an almost orange/greenish light on the power button... no beeps no diagnostic lights are...


Bad Power Supply. Weak voltage power rail.

[There are three main voltages produced by the Dimension 4550's Power Supply.
1) 3.3 Volts
2) 5 Volts
3) 12 Volts ]

The Power On button LED functions as a diagnostic light also.

Dell Support > Dimension 4550 > Service Manual,

http://support.dell.com/support/edocs/systems/dim4550/

Left-click on Solving Problems, then click on Power Problems

The Power Supply is just an ATX form factor version. The common Power Supply form factor used in MANY desktop computers.
(ATX form factor for a Power Supply refers to the size, and shape of the Power Supply's case.
Approximately 6 inches Wide, 5.5 inches Long, and 3-1/2 inches Tall)

HOWEVER, (Not shouting), there is an area of concern, should you try a Power Supply you may have available for a test, or purchase one.

It involves the wiring of the 20-pin ATX main power cable. More specifically the power cable's connector.

To explain view the standard wiring, set for a 20-pin ATX main power cable's connector,

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

Looking at the photo to the far right, observe the color code of the wires, going down into the socket holes of the connector.

Look at the Lock tab on the side of the connector. This will help you orient the color code of the wires, and their placement in the socket holes, to the chart below the photos.

The connector on the end of the 20-pin ATX main power cable, is a Male connector.
Where the wires go into the connector, is the Back of the connector.
In the middle photo you can see the Front of the connector.

The wires going down into the ATX main power cable's connector, end in a female metal terminal.
The connector on the motherboard, (Shown in the photo to the Left), has Pins.
The metal female terminals go over the Pins.

The pins are numbered. The color code of the wires match up to the pins.
This is shown in the chart.

Now look at Dell Support > Dimension 4550 > Technical Overview > DC Power Connectors >
DC Power Connector P1

http://support.dell.com/support/edocs/systems/dim4550/techov.htm#1101897

The illustration may not be accurate. You'll have to compare since you have the computer, and Power Supply in front of you.

For a time period Dell was a Proprietary manufacturer.
Meaning they wanted THEIR parts used on THEIR computers, and ONLY THEIR parts.
They had the motherboard manufacturers make motherboards according to their specs.

One of the specifications was that the pins would be CHANGED around, in the motherboard connector for the ATX main power cable.

They also had Power Supply manufacturers make the ATX power cable to their specifications.

This means if a user bought an aftermarket Power Supply, the color code of the wires in the ATX main power cable would Not match.

Many users did buy an aftermarket Power Supply, and installed it.
Burnt motherboards, fried Processors, and graphics cards, resulted.

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

Guess what happens when you plug a 12 Volt wire into where a 3.3 Volt, or 5 Volt, or Ground wire is supposed to Be?
POOF!

My suggestion would be to look for a Power Supply that is an ATX form factor, is KNOWN to be good, and is compatible, for a test unit.
You, or someone you know may have upgraded to a better computer, and you may be able to borrow the Power Supply for a test unit.

Compatible:
Has the Correct power cables.
1) 20-pin ATX main power cable, OR a 20/24-pin ATX main power cable.
(20-pin connector that has an additional connector with 4 pins. Just use the 20-pin)

2) 4-pin ATX +12 Volt power cable. (Also referred to as P4 MB, and P4 ATX 12V)

http://www.playtool.com/pages/psuconnectors/connectors.html#atx12v4

(Power for the Processor)

3) Enough standard 4-pin Peripheral power cables.
(Misnomered as Molex)

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

(Power for the IDE Harddrive, and Optical drive/s)

Also:
You can change the power wires around in the ATX main power cable's connector.
Change them around, in an aftermarket Power Supply's ATX main power cable's connector.

Want to know how post in a Comment.

Oct 09, 2010 | Dell Dimension 4550 PC Desktop

1 Answer

What is the 6 pin


You can replace the power supply in this Dell with a normal ATX power supply. Make sure the total wattage is equal to or greater than the old power supply.

Oct 02, 2009 | Dell - NPS-200PB-73M (NPS200PB73M) Power...

1 Answer

Dimension 4550 CN 02U819 power supply works but


many dells take proprietary power supplies. if you are using an aftermarket power supply, then you may have burned out your mobo. irregardless, your mobo may be dead, and that mey be the very problem.

Jun 08, 2009 | Dell (E210882) Motherboard

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!!

Mar 24, 2009 | Dell POWER SUPPLY Power Supply

4 Answers

Power supply fan is loud!


Essentially any Standard ATX power supply with a rating of 250 Watts or higher will work

http://www.discountelectronics.com/index.php?l=product_detail&p=1849

Feb 04, 2009 | Dell Dimension 1100 PC Desktop

1 Answer

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you need to replace your motherboard. contact vendor

Dec 15, 2008 | Dell Dimension 4550 PC Desktop

1 Answer

Dell 5100 Dimension - No Power


there are fuses inside psu`s some are solderd and some pop out it i would suggest that u throw the psu away and buy new chances are that it will only cause continues and may even result in 
complete mobo failure problems heres a link to a cheap psu   http://www.microdirect.co.uk/(3649)400W-P4AMD-quiet-PSU-with-PFC-20-pin-24-pin.aspx or a more upmarket more powerfull http://www.microdirect.co.uk/(11879)ThermalTake-TR2-500W-Black-Silent-ATX-12V.aspx the choice is yours.

Nov 18, 2007 | Dell Dimension 5100 (D51L1) PC Desktop

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