Question about EPoX EP-8KHA+ Motherboard

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Connecting to -5V

I had to change the ATX 20-pin contact on my EP-8KHA motherboard, but I'm afraid I managed to damage one of the connecting points. As far as I can tell, the -5V is not connected to the circuits on the board any longer. Could someone please guide me to another point that is electrically the same as where the -5V pin of the 20-pin contact should be connected? (Then I can connect the -5V pin to that point using a cable.)

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  • MickeP Mar 19, 2008

    The help I need has to be from someone who knows the specific board.

    The solution suggested is not viable since it's a multi-layer circuit board, and the connection to that specific pin is not visible.

    So, once again:

    Does anyone know (and like to share it with me) of any other point on the motherboard EP-8KHA that is equivalent to the point where the -5V pin should be connected?

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  • 807 Answers

You will just have to follow the track from pin 18 on the connector to the next solderable point on the board.

Posted on Mar 19, 2008

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1 Answer

Standby 5V overvoltage (8-9 volts instead of 5): what's probably damaged?


  • Check the voltage on the Power supply. (5V STB is on pin no. 9).
  • Check the voltage (on pin no. 9) from the back of the motherboard on ATX socket.
  • Check the voltages on the Front Panel connector for 3.3v, 5v and ground.
  • Check for shorting by placing one probe of multimeter on the ground and the other one by one in pin no. 1,2, 4, 6, 8,9,10,11,12,14,19,20 also on the CPU connector. If there is shorting the problem is with some component on the motherboard.
I think probably the Power Supply (SMPS) is faulty.

Hope that helps.

Oct 23, 2013 | Intel D925XECV2 Motherboard

1 Answer

What power supply connector will work with the ms8137c motherboard (aka, 20 + 4 pin)


Ahem, you just posted 20 + 4-pin.

That means it can be a 20-pin ATX main power cable, OR a 24-pin ATX main power cable.

Most power supply's now have a 20 + 4-pin power cable.

Use the 20-pin connector, or add the additional 4-pin connector, to make a 24-pin ATX main power cable.

Example.

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

In direct answer to your question, however, it uses a 20-pin ATX main power cable.

For additional questions post in a Comment.
Regards,
joecoolvette

Jun 17, 2012 | Matsonic MS8137C Motherboard

1 Answer

Epox ep-8npa sli user manual barcode label says 5a 000901821. d33221 is also stamped on board


I don't have access to a motherboard manual, (User Manual), for the Epox EP-8NPA SLI motherboard, Wayne. Sorry.
The only info I have is the basic info on the Specifications,

http://www.newegg.com/product/product.aspx?Item=N82E16813123257

If this problem is in direct relation to the Front Panel header on the motherboard, it shouldn't be too hard for you to find the Power On switch connections.

(Plastic front of computer is the Front Panel.
Area of pins on the motherboard, that the wires from the Front Panel connect to, is the Front Panel header. { FP_1 )

Processor to the top, Ram Memory to the right, and the long white PCI slots to the bottom; the Front Panel header is the long black rectangular block of pins, at the very bottom right.

Pins go across the Top row, and across the Bottom row, of this rectangular block of pins.
Connections made will be from a pin on the top row, to a pin on the bottom row.

It only takes two contact pins for the Power On switch.
(The Power On switch is an ATX power on switch. It is located inside the plastic Power On button assembly.
Here is a basic example of an ATX power on switch,

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

Touch two pins (One top row, one bottom row), with an LED light.
Take the two wires of the LED light, and use them to touch the two contact pins.

Contact made is no longer than 2 seconds.

If you find the right two contact pins, the Power Supply should turn on.
If not, no harm, no foul.

For example, you have touched the two pins for the HarDDrive activity LED light.
Or pins for the Power On LED light.
You won't hurt anything using a small LED light for a jumper.

Once you find which contact pins turn the Power Supply on, therefore turning the computer on, you can experiment, and see what the other pins are for.

A) Power On LED light
B) HarDDrive activity LED light. and so on.

{ IF, the Power Supply does Not turn on, you have a bad Power Supply}

If this is not the problem simply state so in a Comment. We'll go on to see if we can find the solution.

Regards,
joecoolvette

Nov 23, 2011 | Motherboards

1 Answer

Can i use 20pin atx powersupply instead of 24pin, is it compatible to ep-5ela-3i


The 20pin PSU is for use with normal AMD (Athlon XP, Duron, and athlon64) or Intel (p3 and P4) based Motherboards, but the 24 pin ones are specifically for the Intel Xeon chips (used in servers).

Therefore a 20pin PSU connector will NOT work in the 24 pin connection slot.


I suggest you buy a adapter.

You can buy it from:
http://www.amazon.com/StarTech-com-6-Inch-Motherboard-Adapter-ATX2024MF/dp/B0002GRTZQ/ref=sr_1_1?s=electronics&ie=UTF8&qid=1308495882&sr=1-1


Please rate my solution !

Jun 19, 2011 | EPoX EP-5ELA3I Motherboard

2 Answers

I have tried running 2 different M4A79 deluxe motherboards with a corsair 650W power supply, phenom I X4 processor, and an nVidia 9800GT video card but neither of them will so much as turn on with...


It sounds like the ATX power supply is not getting turned on by the motherboard.
In order for this to happen, pin 14 (PS_ON*) of the 20-pin ATX power plug from the power supply must be pulled to ground. You can test this by plugging the power supply in to AC power without it plugged in to the motherboard.

Using a paper clip, short pin 14 (PS_ON*) to pin 15 (ground) and the power supply should turn ON.

Looking at the front of the 20-pin plug, with the latch on the top, pin 14 is the 4th from the left
__
_________________' '________________
' 11 ' 12 ' 13 ' 14 ' 15 ' 16 ' 17 ' 18 ' 19 ' 20 '
'--------------------------------------------------------------'
' 1 ' 2 ' 3 ' 4 ' 5 ' 6 ' 7 ' 8 ' 9 ' 10 '
---------------------------------------------------------------
Front of 20-pin ATX Power Connector

If you can turn on the power supply by shorting pin 14 to ground, but it doesn't happen when plugged into the motherboard, there is most likely a jumper setting on the motherboard which has not been configured correctly.

I hope this helps!

Mar 13, 2011 | ASUS M4A79 Deluxe Motherboard

1 Answer

I change the power supply but i have a little problem. The new one on the ATX power connector have only 19 pin then 20 old one plus extra 4 pin for something else. The new power supply in Rosewill...


The extra 4 pins on the power supply's atx connector is for new motherboards that require 24pin power supplies. If your motherboard has a 20pin port, then only connect the 20pin portion of your power supply connector.

If your power supply has a 24pin fixed connector that can't be split into a 20+4pin configuration, and your motherboard doesn't have space to let the extra 4pins on the side, then you might want to consider returning the power supply and change it for one that can be used as a 20 or 24pin. Otherwise you will need to cut the extra 4pins apart.

Jan 05, 2009 | ASUS P4B533 Motherboard

2 Answers

Need pinouts


I have an old pc chips M575 motherboard that also uses the J3 ATX Form card. I can only assume the pinouts are the same so here they are from the manual.

Pins 1-4 and 10- 13 are USB connectors
USB USB
Pin Description Pin Description
1 +5v 10 +5v
2 data- 11 data-
3 data+ 12 data+
4 ground 13 ground

Pins 5-6 and 15-16 are PS/2 Mouse Connector
Pin description
5 +5v
6 Mouse CLK
15 Mouse Data
16 ground

Pins 7-9 and 17-18 are Infrared connector
Pin description
7 Ground
8 Reserved
9 +5v
17 IR in
18 IR out

hope that helps

Nov 18, 2008 | Pc Ware M748LMRT Motherboard

1 Answer

Front panel usb


Step 1: Decide weither you have one or two USB cables joined together, it should look like a 4 PIN header.

Step 2: Get your manual from ECS: http://www.ecs.com.tw/ECSWorldWide/Index.aspx?MenuID=0&LanID=9

Step 3: Install the 4 PIN header the right way +5V, - DATA, + DATA, GND on the motherboard, refer to the manual if you get stuck.

Oct 26, 2008 | EliteGroup ECS P4M800-M Socket...

1 Answer

Motherboard not functioning


If the power supply had a problem then it is likely that the motherboard and/or the CPU got damage from that. I would check the 12V and the 3.3V lines from the PSU.

Without more information I cannot say specifically what the problem is. You can try disconnecting everything from the motherboard except video card, CPU, and RAM to see if it would work that way. If it does then you can start connecting devices until it does not work any more then you have found the problem. If that does not work at all then unplug the video card and RAM see if anything changes (you should get a beep code without the video or RAM). If nothing changes then either the CPU or motherboard is bad and the only way that I know of to find out which one is to either try the CPU in another motherboard or try a different CPU in that motherboard.

Nov 12, 2007 | Intel Motherboard

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