Question about Dynex 400-Watt ATX CPU Power Supply

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My dynex atx 400 has a 20 pin connector buy my HP Pavilion has a 24 pin connector. Do I center the 20 pin leaving a pair on either end or do I left or right justify the 20 pin connector

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NO. You can purchase an adapter to go from 20 pin to 24 pin here.

http://www.newegg.com/Product/Product.aspx?Item=N82E16812201001

Posted on Aug 07, 2010

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Need wiring diagram for a hp m7680n


The good thing about the power connectors is they only fit where are supposed to fit. Either they do or the don't. There may be only three that are special. A 24 pin motherboard, a 4 (2x2) or 8 pin supplementary, and a flat 4 pin for a floppy drive. The rest are for SATA drives and the numbers really don't matter. Plus spares for possible expansion.

This is the manual.
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00748726&tmp_task=prodinfoCategory&cc=us&dlc=en&lc=en&product=3230688#N326

Oct 13, 2012 | HP Pavilion Media Center TV m7680n PC PC...

1 Answer

The power supply light is flashing and my computer won't start up. No fan, nothing. I disconnected the power to the mother board and the light burned solid when plugged in. I have switched the watts...


Bad Power Supply.
Weak voltage power rail, or rails.
{There are three voltage power rails.
1) The 3.3 Volt power rail
2) The 5 Volt power rail
3) The 12 Volt power rail}

The flashing Green LED light is one direct indication of this for HP computers.
Usually there is at least enough power to light LED lights, and spin fans, but your Power Supply doesn't even have that much power.

1) All of the LED lights on at once use less than 1 Watt of power
2) EACH fan uses 2 to 3 Watts of power
3) A typical Processor can use 51 to 125 Watts of power.
Depends on what Processor it is.

The HP Pavilion A847C desktop computer has an ATX power supply, with a maximum rated wattage of 250 Watts.

The ATX form factor for a Power Supply refers to it's case size, for one.
5-1/2 inches Long, 3-1/2 inches Tall, and 6 inches Wide
The common type of Power Supply used in over 80 percent of PC computers out there, and readily available all over.


HP Support > Pavilion a847c desktop computer > Main support page,

http://h10025.www1.hp.com/ewfrf/wc/product?product=448706&lc=en&cc=us&dlc=en&submit.y=7&submit.x=5&lang=en&cc=us

Click on Product information in the list
Now click on Product specifications

Finally click on > Motherboard Specifications, PTGD1-LA (Goldfish )

Scroll the page down to view the motherboard illustration and photo.


The replacement Power Supply has to have,

A) A 24-pin ATX main power cable.
In the motherboard photo, view the Ram Memory slots. The long Blue, and Black slots.

To the right of the bottom corner of the Black ram slot (Slot 4) is a whitish connector.
Two columns of 12 socket holes.
This is where the 24-pin ATX main power cable plugs into.
(ATX Power Connector in the motherboard illustration)

Typical 24-pin ATX main power cable,

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

NOTE the Lock Clip on the side of the connector.


B) 4-pin ATX +12 Volt power cable.
At the bottom Left corner of the Processor socket is a whitish square connector.
4 socket holes.
This is where the 4-pin ATX +12 Volt power cable plugs into.
(ATX12V in the motherboard illustration)

Typical 4-pin ATX +12 Volt power cable,

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

NOTE the Lock Clip on the side of the connector.

{The top of the Lock Clip is squeezed in to release it, and is held while the power cable is removed.
Same for the 24-pin ATX main power cable's connector}


C) SATA power cable.
Used for the SATA harddrive

The SATA power cable has 15 pins, and is the longer connector.
The SATA data cable has 7 pins, and is the shorter connector.

IF, the SATA harddrive has provisions for plugging in a SATA power cable, AND a 4-pin standard Peripheral power cable, ONLY USE the SATA power cable.
Otherwise you will burn up the SATA harddrive.

The SATA power cable plugs into the SATA harddrive.
One end of the SATA data cable plugs into the motherboard, and the other end plugs into the SATA harddrive.

Below the ram slots in the bottom Right corner are the SATA headers on the motherboard, that the SATA harddrive plugs into.
The Blue, Orange, Black and White connectors.

Of course the SATA harddrive only plugs into one of them.
Looking at the motherboard illustration you will see they are numbered.
SATA 1, SATA 2, SATA 3, and SATA 4.

IT DOESN'T MATTER which one you plug your harddrive into. (Or any SATA device)
That's the beauty of SATA.
BIOS will find the harddrive.
But for you, it will be easier to keep track of where the SATA harddrive is plugged in, if you just use SATA 1.

Typical SATA power cable,

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


D) 4-pin standard Peripheral power cable.
Commonly referred to as Molex. (Misnomer)

Used for optical drives, Fans, and other associated hardware.

Typical 4-pin standard Peripheral power cable,

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


E) 4-pin Small Peripheral power cable.
Used to be commonly used for a Floppy Drive.
For your computer it provides power to the Memory Card Reader.

Typical 4-pin Small Peripheral power cable,

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

Watch disconnecting, and connecting this connector. You can bend the pins very easily.
SAFETY
WATCH your fingers as the pins are QUITE SHARP!

All of the power cables listed above are standard for today's Power Supply's.

About the Wattage.
A computer ONLY uses the power it needs, and NO more.

If you put a 10,000 Watt power supply in, and the computer only needed 100 watts for what it is doing, it will ONLY use 100 watts.
To wit, if you install a Power Supply with more Wattage than 250 Watts, it will NOT hurt your computer.

If you need guidance in replacing your Power Supply, or recommendations for a Power Supply, please state in a Comment.

Regards,
joecoolvette

(Apologize for being so lengthy)

Nov 24, 2010 | HP PAVILION A847C Intel Pentium 540 HT...

2 Answers

I've got a new Gigabyte Ga-M68Mt-D3 mobo paired with a cooler master 460 watt power supple. Cpu is Amd phenom II 3.2 ghz with 4 gig of DDR3 ram. I powered up the supply attached to my ATX power supply...


Most motherboards now have a 24-pin power supply connector. If you haven't already found a diagram showing the pinouts of the 20- and 24-pin power plugs, here's one borrowed from a handy site:

pgh_pa_guy_1.jpg

The two plugs are essentially the same, but the 24-pin version duplicates some voltages on the extra pins. The extra pins in the larger connector were meant to provide extra current paths for voltages that see heavy loads from newer processors and motherboard circuitry. Depending on how a motherboard is designed, it might work with a 20-pin plug connected (leaving pins 11, 12, 23 and 24 empty). But typically if the board has a 24-pin connector it needs the 24-pin power supply plug.

Most power supplies have a 20-pin plug with a separate 4-pin section that fastens to it for connection to a 24-pin mobo connector. It typically has one side designed to slide onto the end of the 20-pin plug, essentially turning it into the 24-pin version. This added plug does not have a retaining clamp on its side, so you can tell it from the the 4-pin CPU power plug. The wire colors are also different. For reference, here is the processor power plug, from the same website:

pgh_pa_guy_2.jpg
New motherboard specs call for the separate processor power connector for the same reason the extra pins were added to the power supply connector: to handle the high currents needed by increasingly faster CPUs.

When the motherboard has these connectors, you need to use them all to get everything working. Hope this helps. Thanks to smspowersupply.com for the diagrams, and thank you for using Fixya.

moz-screenshot-1.png

Nov 19, 2010 | Computers & Internet

1 Answer

My computer just stoped working. It wont power on and when I hold the power button there is just a blue flashing light


Bad Power Supply.
Weak Voltage power rail.

The Pavilion a6000n desktop computer uses an ATX style of power supply, and is rated at 300 Watts.
(Probably made by Delta Electronics)

The ATX style of Power Supply is used in over 85 percent of PC's. Very common unit.

[Case size is approximately 6 inches Long, 6 inches Wide, and 3-1/2 inches Tall ]

What you are looking for is an ATX power supply with at Least 300 Watts, and the correct power cables.

Note that a computer only uses the power it needs, and No more.

Wouldn't matter if you had a 10,000 Watt Power Supply, (Exaggeration), and the computer only needed 100 Watts, it will only use 100 Watts.

(Surfing the internet typically uses 100 Watts.
Computer. Monitor uses it's own power, and is separate from this figure)

This is HP Support > Pavilion a6000n desktop computer > Specifications,

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00873231&tmp_task=prodinfoCategory&lc=en&dlc=en&cc=us&product=3377269&lang=en

This is HP Support > Pavilion a6000 desktop computer > Motherboard Specifications,

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00906129&tmp_task=prodinfoCategory&lc=en&dlc=en&cc=us&product=3377269&lang=en

1) Scrolling down the page, and looking at the photo of the motherboard, you can tell the Power Supply must have a 24-pin ATX main power cable.

To the right of the Blue, and Black ram memory slots is the 24-pin ATX main power cable connector, on the motherboard.

It is White in color, and consists of 2 rows of 12 socket holes.
24 total.

On the illustration it is marked as - ATXPOWER.

This is a closer look at a typical 24-pin ATX main power cable, and it's respective connector,

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

Note the Lock on the side of the connector. The Lock is hinged in the middle, (Plastic), and operates like a see-saw on a playground.

Squeeze the top of the Lock in to remove the 24-pin ATX main power cable.
ONLY gently pull up on the connector, and NOT the wires.

[This action brings the hooked end of the Lock away from a 'Bump', or protrusion, that is present on the female connector, on the motherboard ]

2) The Power Supply must also have a 4-pin ATX +12 Volt power cable.

On the illustration where it states Socket AM2 is the Processor socket.

To the left, and down a little of the Processor socket, is a blank square.
The writing under it is illegible.

This is where the 4-pin ATX +12 Volt power cable plugs in.

On the motherboard photo it is to the left of the white Processor socket, and is square in shape, with four socket holes.

This is a better look at a 4-pin ATX +12 Volt power cable, and it's respective connector,

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

Color of the plastic used in the connectors, does not matter.

3) Looking at the Specifications page, you will see that the Power Supply must have at least 1 SATA power cable.
It's used for the 250GB SATA harddrive.

Closer look at a SATA power cable, and it's respective connector,

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

NOTE*
If the SATA harddrive in your computer has a place for a SATA power cable, and a 4-pin Peripheral power cable, ONLY use the SATA power cable.
DO NOT use both.

4) Again looking at the Specifications page, the Power Supply must have at least two, 4-pin Peripheral power cables.
Used for the optical drives.
(DVD drives)

A closer look at a 4-pin Peripheral power cable, and it's respective connector,

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

There may be more 4-pin Peripheral power cables needed, to run any computer case fans.

[The Processor fan plugs into the motherboard ]

An example of an ATX power supply that is 500 Watt rated, and has the correct amount of power cables, plus the correct type of power cables,

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3255392&sku=ULT-LS500



Jun 21, 2010 | HP Pavilion a6000n (882780985018) PC...

1 Answer

When i try to start system it will no boot up. amber hd light stays on. i opened up hd and replaced board. mother board fairly new. replaced it with rebuilt one. what should i try next?


1) Why was the motherboard replaced?

2) If this is in reference to an HP Pavilion Media Center M1070n, it uses an Intel Pentium 4 Model 520 (2.8GHz) processor.

Did you make sure you plugged the 4-pin ATX +12 Volt power cable, into the motherboard?
This is power for a Pentium 4 processor, and on up.

This is HP Support, and the Motherboard Specifications page, for the HP Pavilion Media Center M1070N,

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00208497&tmp_task=prodinfoCategory&lc=en&dlc=en&cc=us&lang=en&product=426501

Scrolling down the page is an illustration, and a photo of the motherboard.

Below the Processor socket is the Northbridge chip.
(The Northbridge chip, and the Southbridge chip are the motherboard chipset)

Intel i915P MCH

In the motherboard photo, and installed in your computer, the Northbridge chip has an aluminum heatsink sitting on top of it. (Has fins on top of the heatsink)

Going across to the Left, from the top left corner of the heatsink, is a square connector with 4 socket holes.
The female connector on the motherboard, for the 4-pin ATX +12 Volt power cable.

4-pin ATX +12 Volt power cable,

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

Two Yellow 12 Volt wires, two Black Ground wires.
Let's start with this, and go from there.

May 27, 2010 | HP Pavilion Media Center M1070n...

2 Answers

System won't turn on but when i pushg down on one side of the power suply connectore the fan starts running but computer stioll won't turn on it used to boot up then opne day stopped


It sounds like you have a faulty connector - I would return the item under warranty. Otherwise, if it is out of warranty, you will have to source a new motherboard.

Nov 23, 2009 | ASUS COMPUTER INTL P5SD2-VM MBD MATX LGA...

1 Answer

Hp compaq dc 7100 psu 24 pin SLIM LINE


why wont you buy a new power supply or a plug that converts from a 20 pin to a 24 pin

Mar 31, 2009 | HP Compaq dc7100 PC Desktop

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