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Wiring up a motherboard

During a respray of my computer, i unplugged all the wires to the motherboard from the front panel, to make it easier to work with. However in the past the wiring has always come with a plug which all the wiring fits into. so it was easy to refit.

However, and i should have known better, this particular model, sorry can't say which as I sprayed over the name and model, has wires which have individual plugs on the ends so I'm stumped as to which plug goes onto which pin. The plugs have names on them but not the pins.

The wiring is from the front panel which has USB ports, Status lights and the main on off switch coming off it. The motherboard is an M825 model.

Can you help please.

Tony


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  • Anonymous Jul 29, 2008

    EPoX EP-4G4M+ Motherboard wiring diagram

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Hi Tony,
My search came up with PCChips M825 motherboard.
Try this link.
http://www.pcchips.com.tw/PCCWebSite/SearchResult.aspx?q=M825&f=Downloads&MenuID=104&LanID=2

Good luck Tony!

Mike

Posted on Jul 13, 2008

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My acer aspire zc 606 desktop will not turn on. I have tried unplugging power cord holding power button down for 45 secs. Is there anything else I can do?


First, you should remove the power cord from the PC before opening the side panel. Second, you should avoid static electricity by touching a bare metal part of the case before touching anything else in the computer. It's possible that the power on/off switch on the front panel of your PC is faulty. Inside the case on the motherboard you will find several wires coming from the front panel which connect to pins on the board. one wire is labeled PWR. Unplugging this wire reveals the pins which are very close together. Using a screwdriver to touch both pins at once will power the computer on. Of course, the power cord must be reattached in order for this trick to work so be extremely careful! If the PC is still under warranty then attempting to replace the on/off switch yourself may void the warranty.
The other possibility is that the power supply, or the cpu, or the motherboard itself is faulty. In this case, take it to a computer repair shop.

Jan 31, 2015 | Acer Computers & Internet

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Motherboard


The front of your computer is the Front Panel

The area of contact pins on the motherboard, that the Main wires from the Front Panel go to; is the Front Panel header.

What you are asking for is a Front Panel header pinout.

I do not have the exact Front Panel header pinout, for your motherboard.
Tell you what I do have though..........

Looking at the Front Panel header on the Ebay link, for the Winfast 760m02-GX-6LRS; the Front Panel header looks to be below the CMOS battery, and close to the Bottom edge of the motherboard.

(Motherboard installed in computer case)

Black rectangular strip of plastic, with contact pins sticking up.
Also looks to be a GENERAL set-up for all Winfast motherboards.
(COULD be wrong here)

This is what I am referencing off of,

http://www.devhardware.com/c/a/Motherboards/Foxconn-Winfast-NF4SK8AA8EKRS-Motherboard-Review/3/

Go to the third photo down. Here you see the Front Panel wires, connected to the Front Panel header; on the motherboard.
(Below round CMOS battery)

Note that the contact pin on the Bottom row, and all the way to the Right; is NOT being used.
(I'm using a 26 inch HDTV as my primary monitor, so it may be easier for me to see)

Now look at this Front Panel header pinout, for another Winfast motherboard,

http://www.techsupportforum.com/forums/f15/winfast-mobo-front-panel-connection-558456.html

(Scroll down a little)

PWRLED is for the Power On LED (Light)
PWRSW stands for Power On switch
HD-LED stands for the HarDDrive activity LED (Light)
RESET stands for a Reset switch, IF USED.

Note where it has a Positive ( + ) sign, next to the pin for the PWRLED.
This is the pin the + wire from the Power On LED connects to.
It is the SAME for every LED that connects to the Front Panel header.

Let's number the contact pins, to make the explanation easier;
Starting at the Left side, Top row; going towards the Right;
Pins 2, 4, 6 and 8. There is NO Pin 10.

Starting on the Left side, Bottom row; going towards the Right;
Pins 1, 3, 5, 7, and 9.

Pin 2 is for the Positive wire.
Pin 1 is for the Positive wire
If the LED's are dim, (PWRLED, and HDD LED), OR; the LED's do not light up, switch the wires around.

(Pin 9 is N/C.........Not Connected. This is probably a 5 Volt test point, that was used by the factory)

There is a method you can use though, and find out what the individual contact pins are, in the Front Panel header;

Use an LED with two wires

Computer (Power Supply) plugged into power, go along the top row, and touch two pins at a time, with the two wires of the LED.

Example; Pins 2 and 4, as shown in the pinout.
Did the Power Supply come on?
No?

Go to the next two pins. Try again.
When the Power Supply comes on, you naturally know that is the two contact pins; for the Power On switch.
DO NOT touch them again. In fact connect the Power On switch wires.

Power Supply on, computer running;
Now go back along again;
1) LED light blinks?
You have the HarDDrive activity LED, contact pins.
2) LED light stays on?
You have the Power On LED, contact pins.
3) Computer restarts?
Those are the Reset switch, contact pins.

4) Nothing happens?
May be contact pins for a speaker, or contact pins that are not used.
(Speaker is for hearing BIOS Beep Codes.
You have a Piezo buzzer, to the Left of the CMOS battery; for that)

Post back in a Comment, as to the results.

If possible, I would like to ask upon you; to post the Front Panel header pinout; when you find what it is.

That way when a person in the future also has this same problem; the solution will be posted on the internet, for them to find.

For additional questions please post in a Comment.
Regards,
joecoolvette

Apr 30, 2013 | Leadtek Winfast 760m02-gx-6lrs Socket 754...

1 Answer

Gateway DX4822-01 power switch problems


The front of your computer is the Front Panel.

The area of contact pins on the motherboard, that the Main wires from the Front Panel go to, is the Front Panel header.

Main wires such as Power On LED, Power On switch, HarDDrive activity LED, and Reset switch; IF used.

Suggest KEEP track of where those wires go!

Make a drawing, and notes. I even use a magic marker, (Sharpee?), and make a notation of the Front Panel header pinout, on the floor of the computer case.

In this particular case it isn't known if the Power On switch is the problem, or the Power Supply.

Power On switch;
Power UNPLUGGED to computer, Anti-Static Precautions FOLLOWED; (Don't know? Post back in a Comment),

Remove the twisted pair of W/B and W/G wires, to the Power On switch pins, in the Front Panel header.

Plug power back into computer.
Use a small flat tipped screwdriver, and touch the two Power On switch pins. (Jewelers screwdriver works well for this application)

Power Supply comes on? Bad Power On switch.
Allow Windows to fully load, run for a few minutes; then turn the computer off normally.

Jump the two Power On switch pins again.
Power Supply comes on? You DEFINITELY have a bad Power On switch.

Power Supply does NOT come on?
We will go to a further diagnostic test then.
Awaiting results for first test, then we will go on.

Post back in a Comment.

Regards,
joecoolvette

[Also; is the computer dirty inside? ]

Feb 19, 2013 | Acer Computers & Internet

1 Answer

Dell dimension e510 flashing amber light USB front panel


If you are comfortable around computers, you could try the following to test the power supply. Unplug the cord from the power supply, hold the power button in for about 15/20 seconds, open the case, unplug the 24-pin power connector from the motherboard and jump the Green wire to one of the Black wires, reconnect the power cord and power the system on and if power supply fan and hard drive run, then the PSU should be good. Note: Do not remove any wires from the plug, use a small piece of wire or a paper clip as a jumper. Power supply checks out and the system still does not work, again remove the power cord, hold power button in for several seconds to discharge the residue power, reconnect the 24-pin connector to the motherboard. Remove all the PCI cards, the video card [if applicable], memory, all peripherals, disconnect the data and power cables to all the drives, check that the front panel cable is connected to motherboard, with nothing else connected to the system, reconnect the power cable and power the system on. If you do not get any beep codes or diagnostic lights on the front panel, then it would appear that motherboard has died.

Aug 07, 2012 | Computers & Internet

1 Answer

I am looking for MCP61PM-HM (Nettle) 9 pin front panel power header diagram


This motherboard Adam?

http://h10025.www1.hp.com/ewfrf/wc/document?lc=en&dlc=en&cc=us&docname=c00906137

Can't help you.









OH, I'm just KIDDING!

The front of your computer is the Front Panel.
The area of pins on the motherboard, that the main wires from the Front Panel go to, is the Front Panel header.

On the motherboard the Front Panel header is marked as PANEL1.
Scroll the page down, until you come to Motherboard layout.
Click on the + sign to the left of it.

Shows an illustration of the motherboard.
Bottom/Right corner is PANEL1. The black rectangle that is sitting vertically, in the motherboard photo.

Motherboard installed in computer case, the Front Panel header is two columns of contact pins.
FOUR on the Right side, FIVE on the Left side.

I don't know the actual numbering of the pins, so I'm going to number them myself;

Starting on the Left side at the Top, going down,
Pins 1, 3, 5, 7, and 9.

Starting on the Right side at the Top, going down,
Pins 2, 4, 6, and 8. There is NO Pin 10.

A) Pins 1 and 3 are for the HarDDrive activity LED (Light)
Pin 1 is for the Positive ( + ) wire.
If the HDD LED is dim when the harddrive is active, switch the wires around.

B) Pins 5 and 7 are for a Reset switch, IF a Reset switch is used. If not, do not connect to them.

C) Pin 9 is N/C. Not Connected. It was a +5 Volt power for the factory.

D) Pins 2 and 4 are for the Power On LED (Light)
Pin 2 is for the Positive ( + ) wire.
If the Power On LED is dim when the computer is on, switch the wires around.

E) Pins 6 and 8 are for the Power On switch.

F) NO pin 10, just a blank spot.

How to find out what wires are what, in that Front Panel harness connector?

Follow the wires from the connector, up to the Front Panel.

Front Panel removed it is easier to see where the wires go.
You can follow the color code of the wires, and see which twisted pair go up to the Power On switch.

You can also see which ones go to the Power On LED.
(Light Emitting Diode, so it is a light)

Reset switch, (IF there is one), same thing.

The only pair of wires that will be left is the HDD LED wires.
HarDDrive activity LED.

The 9-pin plug will have to be CAREFULLY cut apart. Separate the wires, AND their metal terminals. (WATCH your fingers!)

For additional questions please post in a Comment.
Regards,
joecoolvette

Jul 04, 2012 | Gateway MCP61PM-GM (4006254R) Motherboard

1 Answer

Hello i need to know how to reconnect the computer case wires to a sr1703wm compaq motherboard


Hello.

The Compaq Presario SR1703WM desktop computer, uses an Asus A9AE-LE motherboard.
HP/Compaq's name is AmberineM - GL6E

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00496280&tmp_task=prodinfoCategory&lc=en&dlc=en&cc=us&lang=en&product=1815742

1) I would like to start with the Front Panel wires.
The Front panel, is the plastic front on your computer tower, where the Power On button, Power On LED, and so on is located.

The Front Panel header is the connector on the motherboard, where the cables, (Wires), from the Front Panel connect to.

Looking at the HP Support link above, I would like you to scroll down the page to the illustration of the motherboard, and the photo of the motherboard under the illustration.

Looking at the illustration observe the bottom Right corner.
F_PANEL1 indicates the Front Panel header.

Note there are 4 pins going across the Top, and 5 pins going across the Bottom.

Looking inside your computer, the motherboard will be located in a different position, compared to the illustration.

The Front Panel header will be located Vertically, (Up, and down)

Note that there is a twisted pair of Black, and Red wires.
These wires form the Power On cable.
They come directly from the Power on switch.

There is a twisted pair of Yellow, and Black wires.
These wires form the Harddrive Activity LED light cable.
(HDD)
When the harddrive is active, this LED flashes.

There is a twisted pair of Green, and Black wires.
These wires form the Power On LED light cable.

The wires, (Cables), should be in one Black connector.

Looking at the Front Panel header in your computer, align the Black plastic connector's socket holes, with the pins sticking up out of the Front Panel header, on the motherboard.

Note that the Front Panel header is rectangular in shape. There is 1 pin missing.
The Black connector coming from the Front Panel of the computer, has one socket hole blocked off, to match.

Align the four socket holes in the Black connector, to match the 4 pins sticking up out of the Front Panel header, on the motherboard.

The other 5 socket holes in the Black connector, will match up to the 5 pins sticking up, automatically.

Use care, and you may need a bright light to assist.
These pins can be bent quite easily.
(Also watch your fingers, as the ends of the pins are S-H-A-R-P!)

2) Where it states CLRTC (CLPWD under it), is the Clear CMOS jumper.
Suggest you leave it alone.

3) Where it states F_ USB1, and F_USB2, is where the USB cables from the front of the computer connect to.

(The USB ports on the front of the computer's Front Panel.
F_USB1, and F_USB2 headers on the motherboard, are shown on the illustration to the Left, of the Front Panel header. F_PANEL1)

The plastic connector on a USB cable coming from the Front Panel, has an orientation just like the Front Panel header cable does.

There is 1 pin missing on the USB header on the motherboard.
There is a blocked socket hole in the USB cable's connector.
Align the connector to match the pins.

Doesn't matter which USB cable from the Front Panel, that you connect to the USB headers on the motherboard.
BIOS will find them, and assign an IRQ to each, once you turn the computer on.

All you will see at a first glance is a series of thick Gray insulated cables, coming from the Front Panel of your computer.

If you follow the cables by eye, you can see where the USB cables are connected to the back of the USB ports, on the Front Panel.

You may, or may not, have to remove the Front Panel to see more clearly.

Computer case open, look inside towards the Front Panel.
There is a Green plastic tab towards the Top.

This locking tab is depressed Towards the Inside of the computer, to START to unlock the Front Panel.

Towards the bottom in the same plane, is a Black locking tab. This tab is pulled Towards the Outside of the computer.
There is another Black plastic tab on the opposite side.

At the Bottom are two more Black plastic locking tabs. These are depressed down, towards the Bottom of the computer case.
One on one side, one on the opposite side.

Start by depressing the plastic Green tab, and gently easing the Top of the Front Panel, slightly out.
Then go to the two Black plastic locking tabs located towards the Middle, and depress them.

Ease the top of the Front Panel out a little more.
Finally go to the two Black plastic locking tabs located at the Bottom, and depress them.
Ease the Front Panel off.

(NOTE*
Your computer's Front Panel may not have locking tabs located at the bottom.
Just locking tabs located up from the bottom, more towards the middle)

It's no picnic for your first time, but once you have done it, it becomes easy. (Ummm, Easier!)

4) The Firewire (a1394) cable on the Front Panel, connects to the F_1394 header on the motherboard.
In the motherboard illustration the F_1394 header is located to the Left, of PCI2

Need any further cable connections, post in a Comment.



Aug 14, 2010 | Compaq Presario SR1703WM PC Desktop

2 Answers

Where can I get a hp pavilion a520n power button switch?


ebay.com ;)
or you can try compusa.com
if that doesnt work just call 1-800-711-2884 HP tech support number and ask them ;)

Apr 23, 2010 | HP Pavilion A520n (DW233A#ABA) PC Desktop

1 Answer

Wires from switch came unplugged (white and black) where do they


Power On switch (Button)? Restart switch? Speakers?Wires came loose from the motherboard?
Should like you to see if you can trace the wires back to the front panel, (Where the Power On button is located
Granted, this may be a little tough in some instances. If you can, ease the front panel loose, and you'll get a better view.

There are usually four to six tabs, coming from the front panel. Two or three on each side. Usually one at the top, one in the middle, and one at the bottom. (On the three tabs per side model) These plastic tabs are eased towards the inside direction of the computer. You will observe that they have a 'tang' on them. You just ease the tab to the inside, until this tang clears the hole, then ease the front panel forward a little. Once you get one tab started, then go to the next tab up, or down. Depends on if you start at the top, or bottom.

This way you can see if this Black and White wire goes to the Power On switch, the Reset switch, (IF used), one of the speaker wires, or one of the LED lamps in the front panel. (Power On, or Harddrive activity lamp)

I also need the model name and model number.
Example: T1090

I have to find an illustration of the motherboard (Try), and be able to tell you, what pins on the motherboard those wires go to.

Now, up front, finding the motherboard specifications for an eMachine computer, is a little tough. Also, there were three different motherboard manufacturers. Makes it a lot of fun.(?)

However, not to despair. I'm pretty decent at finding this info. I have worked on a lot of eMachines, and have a few around my shop right now. Maybe I (we'll) get lucky.

Mar 22, 2009 | E-Machines eMachines Desktop PC

1 Answer

Front panel wiring


Hi, Maybe we can wing it if you can send an image of the motherboard closeup on the F_PANEL connections and the wires from the front panel itself, or get the specific motherboard model during POST so we can try getting URL of manual. In some instances, the front panel wires are: Green wire, power on green light +, white wire is power on green light -; Red & Black, speaker; Red & white - HDD red activity light indicator where red is HDD + & white is HDD -; Orange & white - Reset Black & White - power on Post back so we can figure things out. Good luck and kind regards.

Aug 23, 2007 | Micro Electronics PowerSpec 8250 PC...

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