Question about E-Machines eMachines Refurbished EMA SYSTEM BOARD MODEL T2984 eMachines (102257) PC Desktop

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E-Machine will not power up after being moved

Is the front panel wiring for the HDD led, power light, and on switch the same on the T3830 as on the T2990 you posted?

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System board model t2984 emachines pc does not power on. how much for replacement board.

Posted on Oct 22, 2008

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How to re-wire a Compaq Presario SR2150NX Case power Switch


The plastic front of your desktop computer is the Front Panel.

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

F_PANEL_1

The Front Panel header contains connections for the Power On switch, Power On LED light, HarDDrive activity LED light, and so on.

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00864922&tmp_task=prodinfoCategory&cc=us&dlc=en&lang=en&lc=en&product=3339274

(Look at the motherboard photo. The Front Panel header is at the bottom right. Scroll down for the motherboard illustration )

There are 9 contact pins.
4 across the Top row, and 5 across the Bottom row.

The four pins across the Top row are numbered EVEN.

From the Left side going towards the Right side;
Pins 2, 4, 6, and 8. There is NO pin 10, just a blank spot.

The five pins across the Bottom row are numbered ODD.
Pins 1, 3, 5, 7, and 9.

A) Pins 2 and 4 are for the Power On switch

B) Pins 6 and 8 are for the Power On LED

(LED is dim when the computer is on? Switch the wires around )

C) Pins 1 and 3 are for the HarDDrive activity LED

(LED is dim when the harddrive is operating? Switch the wires around)

D) Pins 5 and 7 are for a Reset switch, IF a Reset switch is used.

How to know which wires are for the Power On switch, Power On LED, and HDD LED?

Follow the wires into the Front Panel. Remove the Front Panel, and follow them.
(Need guidance removing the Front Panel post in a Comment )

For additional questions please post in a Comment.

Regards,
joecoolvette

May 02, 2012 | HP Compaq Presario SR2150NX PC Desktop

1 Answer

How to hook up the face plate of a emachine w3400 Wich includes 3 wires 1 power butten and 2 led lights


Look at the pinout of the Front Panel header, of the eMachine W3400's motherboard.

The plastic front of the computer is the Front Panel.
The area of pins on the motherboard, that the cables (Wires) from the Front Panel connect to,
is the Front Panel header.

The motherboard for an eMachines W3400 desktop computer is an MSI ms-7145
(Micro Star International)

Orient the motherboard in your view so that we are both looking at it the same way.
Processor to the Top, Ram Memory slots to the Right, white PCI slots (3) to the Bottom.

JFP1 is the Front Panel header.
(Junction Front Panel 1)

JFP1 is on the Bottom Right corner. There are two columns of pins arranged vertically.
(The JFP1 header runs parallel to the Right side of the motherboard)

The Left side column of the JFP1 header is numbered Odd.
Starting at the Top and going Down, the pins are numbered;
1, 3, 5, 7, and 9

The Right side column is numbered Even.
Starting at the Top and going Down, the pins are numbered:
2, 4, 6, and 8.
There is NO Pin 10

A) Pins 1 and 3 are for the HarDDrive Activity LED light. (HDD)
If the LED light is dim will operating switch the wires around

B) Pins 5 and 7 are for the Reset switch. (Reset button)
> IF Used

C) Pin 9 is Not used. (NC. No Connection)

D) Pins 2 and 4 are for the Power On LED light (If dim switch the wires around)

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

Trace the wires back to the Power On switch. Even if it means temporarily removing part of the Front Panel to see.

Same with the LED lights.
See which wires go to the Power On LED, and HDD Activity LED. (Harddrive Activity LED)

Follow the 3 wires, and tell me where they go to on the Front Panel.
USB port?
Memory Card Reader?
Firewire port? (a1394)

Nov 27, 2010 | AMD eMachines Desktop System w/ 17'' CRT...

1 Answer

I have purchased a Thermaltake V3 black case and am trying to install my M2N68-LA motherboard. The motherboard has a combined 9 pin header for power switch, power l.e.d. and hdd l.e.d. which was one plug...


1) The 9-pin header you are referring to, is the Front Panel header.

(Processor to the top, Ram Memory slots to the right, the Front Panel header is at the bottom right corner on the motherboard)

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00906129&lc=en&cc=de&dlc=&product=3397528

The plastic piece on the front of your computer is the Front Panel.
(Sometimes referred to as a Bezel)

Make a drawing, and notes as to where the individual wires go from that Front Panel header plug, (One-piece plug), to the Front Panel.

Follow the wires from the plug to the Front Panel.

Mark down where Each wire goes.

You may have to take components off of the Front Panel, in order to see exactly where Each wire goes.

For example:
You may have to remove the Power On button/switch assembly from the Front Panel.

It may have the Power On LED light, Power On button, (Switch), and perhaps the HarDDrive LED activity light, in this assembly.

The wires are color coded.

Generally, but not always, when two wires are used in conjunction with each other, (Example, Power On switch, or Power On LED light), the wires will be twisted together.

One wires insulation may be of a solid color, and the other wire may be white, with a stripe in the color of the solid wire.

Example: Wire with Red color, and wire twisted with it may be White, with a Red stripe.

See if these two wires go to the Power On switch.
End of example.

Follow each twisted pair of wires back down to the Front Panel header plug.
(One-piece plug)

See which socket holes the individual wires go to.
Mark it down in your drawing, and notes.

Mark where the individual socket holes plug onto each pin, in that Front Panel header. (9-pin header)

When you are finished, you will have a pinout for the Front Panel header on the Asus M2N68-LA motherboard, and will know where the individual wires go from your ThermalTake V3 computer case.

For the LED lights there is a Positive pin, ( + ), and a Ground pin. (Power On LED, and Harddrive activity LED, for example)

(Ground. Also referred to as the Negative pin. ( - )
This is DC Voltage)

If you have the polarity backwards, (Positive wire of the LED light is going to the Ground pin, Ground wire of the LED light is going to the Positive pin), the LED light will be dim.

(When operating)
Switch the wires around.

If you have questions, or need clarification of what I have stated above, simply state in a Comment.
(Believe upper right of your page)


Jul 01, 2010 | ASUS PC Desktops

2 Answers

Pulled off front cover. three sets of wires came off. need to know where to reconnect. white/red wire HDD LED, white/green wire POWER LED, white/black wire POWER SW


Hi. You may want to check your motherboard for this wires to connect to, First, check your motherboards manual and look where the FRONT PANEL is located, then on the front panel or in the manual itself it will tell you where are those wires should be connected to. If you dont have the manual for your motherboard search it on google and do the same, and if still you coudnt find it over the internet then just look closely on your motherboard and look for the words HDD LED, POWER LED and POWER SW, usually those words or the FRONT PANEL is located on the left side bottom part of your motherboard. Hope This Helps

Jun 09, 2010 | E-Machines T3302 PC Desktop

2 Answers

Had to replace power switch on emachine computer need to know where wires go


You must check cable(small) one the (left or right) one hard drive, CD Drive, floppy disk and for motherboard (the big one) .You check the manuals, is not hard just follow where the power lines.

Feb 21, 2010 | E-Machines eMachines T3830 PC Desktop

1 Answer

NO POWER TO THE MOTHER BOARD OF MY EMACHINE


The Wires goes on the motherboard, check your motherboard manual for reference

Mar 17, 2009 | E-Machines eMachines T3830 PC Desktop

2 Answers

NEED POWER SWITCH WIRING FOR A EMACHINE T-3095


check on the motherboard there should be a small prints on it near control panel.

Mar 05, 2009 | E-Machines eMachines T3830 PC Desktop

1 Answer

Emachines t3830 I need the schematic for MB I umployed the wire for the push bottom without looking at the way they were plug. Now I do not know the correct aligning of the push bottom wires.


If you look at the motherboard there is usually a diagram labeled "FRONT PANEL HDR" that will tell you which pins are for: HDD LED, PWR LED, RESET, PWR ON. etc.
The chart / diagram may be a few inches away from front panel header.
the following example is from my emachine T2893 that I had opened because it won't power up.

the motherboard at the header connector labels pin #2 and with that you can figure out the other
pin numbers

example of diagram on motherboard (Confirm the pin numbers on your motherboard)


J9G1 PINS
| HD LED | 1 - 3 |
| PWR LED | 2 - 4 |
| RESET | 5 - 7 |

| PWR ON | 6 - 8 |

Hope this helps you figure which pins to hook you switch up to.

Jan 18, 2009 | E-Machines eMachines T3830 PC Desktop

3 Answers

Wiring


give me your email. I will send a picture of Front panel connections. BTW are you a tech or feel comfortable to T/S further?

Nov 14, 2008 | E-Machines eMachines T3830 PC Desktop

2 Answers

The same like everyone but know answers like everyone pw, hhd, power led


have a look on the techguys tab at pcworld.co.uk, you will be able to download the maual from there

Nov 13, 2008 | E-Machines eMachines T3830 PC Desktop

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