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Replace power supply: dell 4300S

Are there any schematics or "how-to" pictorials showing how to replace a power supply for my 4300S?

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  • asmeltzer Mar 07, 2009

    I cant get the powersupply out when pushing the button to release it. What on earth am I doing wrong? My thumb is killing me trying to slide the powersupply out with the green button. I need to replace it. A tech told me it would cost $300 new and I found one on ebay for $25.00 I just cant get the darn thing out! Help!

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Replacing a power supply is pretty generic for most PC's. Basically, one just unplugs the computer, removes the side cover, takes note where all the connections go and unscrews it from the back. Installation is the reverse of removal. Be _careful_ to touch the case of the computer before touching any parts inside the computer to discharge any static electricity as it is easy to zap electronic parts unknowingly with static electricity, or wear a grounding strap. If you don't know how to access the inside of the computer, go to the manufacturer's website and download the manual for your model. Dell usually has good documentation.
Probably the hardest part of replacing a power supply is making sure that you have a replacement with the correct connectors. Take the old one to the store with you.

For more detail, try here:
http://www.hardwaresecrets.com/article/362

Or here:
http://tech.blorge.com/Structure:%20/2009/01/03/how-to-replace-a-desktop-pc-power-supply-unit-psu-tutorial-with-pictures/

Also see You tube for a video.

Posted on Feb 07, 2009

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This doesn't specifically address how to remove the power supply, but it does give drawings and instructions for opening the case and removing the various components.

http://support.dell.com/support/edocs/systems/dim4300s/replace.htm#1101667

Posted on Feb 07, 2009

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2 Answers

Can you replace a dell t3500 power supply?


Service manual shows how: http://downloads.dell.com/Manuals/all-products/esuprt_desktop/esuprt_dell_precision_workstation/precision-t3500_Service%20Manual_en-us.pdf?c=us&l=en&cs=&s=gen

The part model is listed in this entry at the dell community forum: http://en.community.dell.com/support-forums/desktop/f/3514/p/19420506/20243342.aspx#20243342

Dec 03, 2012 | Computers & Internet

1 Answer

Burnt connector inside dell inspiron, first connector at motherboard (after power box) Can I fix it?? If so, can u help??


LOVE your user name!

I'll try to guide you the best that I can.
Sorry, first connector after Power Supply does me no good.

Let's look at a basic schematic of the motherboard for a Dell Inspiron 530s Desktop PC,

Dell Support > Inspiron 530s Desktop PC > Dell Inspiron 530s Series Owners Manual,

http://support.dell.com/support/edocs/systems/insp530s/en/OM/HTML/index.htm

I would like you to click on - Removing and Installing Parts
In the left column click on - System Board Components
{System Board = Motherboard }

This is a basic view of the motherboard with No hardware components installed.
It is also how the motherboard sits in your computer.

This is a pictorial view of the motherboard,

http://www.amazon.com/Dell-Motherboard-Inspiron-Systems-Compatible/dp/B003CO0WQS

Now, compare the Dell Support motherboard illustration, to the pictorial.
Looking to the far right in the illustration, the first connector is marked with the number 8.

On the pictorial it is the rectangular Black connector at the bottom/middle. (Next to the rectangular White connector)

This connector is for a Floppy Drive.
Is this the connector in question?

Is it the white rectangular connector next to it?
This connector is for the main power cable coming from the Power Supply.
In the illustration is is marked by the number 7.

This is a basic example, of the power cable coming from the Power Supply (power box), that connects to the white connector,

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

{Note* Color of the main power cable's connector does not matter. It can be any color }

IF this connector on the motherboard is burnt, you may wish to stop.
Electricity has more than likely fried the entire motherboard. May also include the Processor, Ram Memory, Harddrive, and a graphics card, if installed.

I know. I'm a 'ray of sunshine'.

How could this connector be burnt?
Four ways I know of;

1) Lightning storm, or power outage. Also could have happened if the power utility company was doing some changes in the power lines, utility pole transformer, etc.
(No. The utility company cannot be held responsible. I don't agree with that)

2) Power cable was not plugged in tightly. Lock on side was not locked into place.
Air gap created in-between the connecting contacts in the power cable connector, and the motherboard connector, created resistance.

Resistance creates heat. Burnt connector/s will result, and perhaps worse.
{Could also create a small power surge }

3) At one time Dell was a Proprietary computer manufacturer.
This means Dell wanted THEIR replacement parts used on THEIR computers.

If an aftermarket computer component is installed, Dell cannot warranty their computer.
Using THEIR parts in THEIR computers, Dell could.
However Dell computer users did not wish to pay the price of the Dell replacement parts.
The aftermarket parts were cheaper, of good quality, and readily available.

If we use a Power Supply for an example;

Dell had the motherboard manufacturer switch the socket holes around, in the Motherboard connector, for the main power cable.

They also had the Power Supply manufacturer switch the pins around, in the 24-pin ATX main power cable's connector, to match.

The aftermarket power supply manufacturer built the power cables, and connectors, to follow industry standards. Dell did not.

This means if you plug an aftermarket power supply's main power cable, into a Dell motherboard that was built proprietary, the motherboard usually fried. The only sign may be a burnt connector on the motherboard.

Could also have fried the Processor, Ram Memory, Harddrive, optical drive/s, and a graphics card, IF installed.

[ Looking at the Playtool link again, look at the photo to the far right.
See the different colored wires?
The color coding indicates what the wire carries as far as Voltage, or if it is a Ground wire.

1) Orange insulated wires = 3.3 Volts
2) Red wires = 5 Volts
3) Yellow wires = 12 Volts
(All are DC. In comparison two D cell flashlight batteries produce 3 Volts DC)

4) The Black wires are Ground wires

(The Green wire is the Soft Power On wire. Abbreviated as PS_ON)

The Orange, Red, and Yellow wires are power wires.
The Black wires are Ground wires.
Guess what happens if a 12 Volt wire is connected to a Ground?
(Instead of going to a 12 Volt connection)

Things start frying.

{To state connections in the main power cable connector, and it's respective connector on the motherboard, correctly;

Looking at the middle photo you see the connection end of the main power cable.
Plastic connector with individual plastic rectangular shapes, that have metal 'tubes' inside each of them.

The motherboard connector has socket holes to match the individual plastic rectangular shapes.
Inside the socket holes are metal pins. Contact pins.
The contact pins go inside the metal 'tubes'.

The metal 'tube' is a Molex Socket Terminal,

http://www.mouser.com/ProductDetail/Molex/36664-0002/?qs=sGAEpiMZZMvz8LftK4jerhl0r50z%252bUNRzFCdHbJqUTU%3d


4) IF the Power Supply, ( looking at it from the Back of the computer), has a rocker switch, or slide switch, to set the incoming AC power to 110 Volts, or 220 Volts;
And the power supply switch was set to 110, and plugged into 220 Volts,
the motherboard connector would fry.

Plus the Power Supply. May also of course include Processor, Ram Memory, Motherboard, Harddrive, optical drive/s, and graphics card IF installed.


Replace the connector? No
Could be;
A) Replace the Power Supply. Still no?
B) Replace the Motherboard. Still no?
C) Replace the Ram Memory. Still no?
D) Replace the Processor. Computer operates but no graphics?
E) Graphics card installed? Replace graphics card

Unless you can test each individual component, and the cost is not much less, or equal to a new computer, the obvious choice would be to purchase a new, or good used computer.

Nov 01, 2011 | Dell Inspiron 530s Desktop Computer

1 Answer

Computer won't start. PSU good. Amber light on mobo. What gives?


It is probabley the power supply is bad the amber light should be green Get yourself another power supply and see if that don't fix your problem

Sep 01, 2011 | Dell Dimension 4300S (Refurbished)...

1 Answer

Dell 4300S new hard drive , lost original windows cd. now what do i do to get up and running again?


Borrow one from a friend and install it by using your key. Later you will have to install all the drivers.

Nov 23, 2010 | Dell Dimension 4300S (Refurbished)...

1 Answer

Dell dimension 4300s want to move hard drive to a new machine


You can move it but you have to remember that its going to have different hardware then your dell 4300 so it might require you to install drivers for the hardware that windows XP pro can't recognize. Keep that in mind so as long as you know where to go to get drivers for the hardware in that other machine, it won't be a problem.


Mar 02, 2009 | Dell Dimension 4300S Convertible...

1 Answer

What does my hard drive look like


Hi jman,

just look at the front of the pc a green light will come on if the hdd is getting juice. The harddrive looks like an old 8-track tape, I'm showing my age, ugh.

anaanymous


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Oct 18, 2008 | Dell Dimension 4300S (Refurbished)...

2 Answers

Autio driver


The audio drivers should be here: http://support.euro.dell.com/support/downloads/driverslist.aspx?c=uk&l=en&s=gen&ServiceTag=&SystemID=DIM_PNT_P4_4300S&os=WW1&osl=en&catid=&impid=

Sep 21, 2007 | Dell Dimension 4300S (Refurbished)...

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