Emachine t2542 i have an emachine t2542 and the wires from the front panel are out do you have a diagram of the motherboard to replace the power button, and the front blinking light wires back on to the motherboard thank you sue

Good luck on finding a wiring diagram. Usually those plugs represent the Power Button, the Hard Drive and the other sometimes represents a reset button. If you remove the cover and sit the computer on it's side, take a flashlight so you can see inside at the motherboard. If you look from where the wires come from on the front they usually stick into little prongs on the side of the motherboard. The motherboard will have little written identifiers such as hdd for the hard drive light, pwr for power or power reset, fan for fan, etc.

Also sometimes if you look on the little piece at the end of the red, white and black wires where it plugs into the motherboard prongs, sometimes it will have writing on it as to which one it is.

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)

micha219, the eMachines W2925 desktop computer uses an FIC motherboard.
First International Computer { Inc }
The Model Number of the FIC motherboard is VC37.
FIC VC37.

Disregard the following if you are aware:
The plastic front of your computer is the Front Panel.
The area on the Motherboard that the cables (Wires) from the Front Panel connect to, is the Front Panel header.

Processor to the Top, Ram Memory slots to the Right, the Front panel header is in the Bottom Right corner.

It is a rectangular shape with two columns of pins.
The length goes up, and down on the motherboard.

The pins on the Right side of the Front Panel header are numbered Odd.
The pins on the Left side of the Front Panel header are numbered Even.

There are 4 pins on the Left side.
There are 5 pins on the Right side.

Starting at the Bottom on the Right side going Up;
Pins 1, 3, 5, 7, and 9.

Starting at the Bottom on the Left side going Up;
Pins 2, 4, 6, and 8.

A) Pins 2 and 4 are for the Power On LED light.
(If after connecting the LED light is dim, reverse the wires)

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

C) Pins 1 and 3 are for the HarDDrive Activity LED light.

D) Pins 5 and 7 are for the Reset switch. (Reset button. IF used)

Pin 9 is NC. Not connected

I would suggest this generic Power On switch,

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

and the Red, and Black twisted pair of wires go to the Power On switch.

Your statement of ,"....don't know which of the colored pairs of wires go.....", leads me to believe you may have all of the Front Panel wires disconnected.

How about information as to where ALL the Front Panel wires go?
(Provided I have correctly interpreted your statement)

Back in the time that the eMachines T2542 was made, TriGem was the motherboard manufacturer.

The Model Name of the motherboard is Imperial, and the Model Number of the motherboard, could have been one of four variations offered.

Model Name: Imperial
Model numbers could be G, GL, GV, or GLVE
(Imperial G, Imperial GL, Imperial GV, or Imperial GLVE)

ALL four variations used the same Front Panel header.
(The connector on the motherboard the Front Panel wires connect to, is named the Front Panel header)

I would like you to view this page,

http://www.e4allupgraders.info/dir1/ecase/support/front_panel_header_support.shtml

Scroll down to the heading -
Trigem Imperial Front Panel Header Pinout.

A) Pins 1, 2, and 3 are for the Power On LED light.

B) Pins 5 and 6 are for the HarDDrive activity LED light.
(Pin 4 is not used. NC. No Connection)

C) Pins 7 and 8 are for the Power On switch

D) I wouldn't connect any wires to Pins 9 and 10, nor Pins 11 and 12

E) Pins 14 and 15 are for the Reset switch. (The button you press to restart your computer.
If the T2542 doesn't have a Reset switch, don't worry about it. There are many other ways to restart your computer)

F) Pins 17 18, and 20 are for an internal speaker.
This speaker is used for BIOS Beep Codes.

In the chart to the right, you will see GRD used many times.
GRD stands for Ground.
ANY Black wire in the twisted pair of wires, is a Ground wire.

Most of the eMachines I have worked on, use a Red, and Black pair of twisted wires for the Power On switch.
I could be mistaken on the T2542.

Best method, is to follow the color code of the wires that come from Pins 7 and 8, and be sure.

it should be printed on the motherboard itself. if not, go google emachine t6520 front panel connections.

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.

Hi birm,
I can tell you that most likely the white wire is the ground wire. The others are positive. The two manual found on eMachine's site does not provide enough of detail.
In this manual see;
Replacing the front I/O Panel (Pages 168, 170 see number 5).
http://downloads.emachines.com/userguides/8511279_eM_NG3_chassis_HW_ref_en.pdf

The information is not specific enough, my guess is the front panel connections is the cable to the far right. (Looking at the picture).
You can try by looking at the picture & hooking the cable as shown.
The white colored wire seems to face to the right. Than try the power on button. If system does not come on, turn the connector 180 & reconnect. Try the power on button on the case.

Listed at the bottom of the link below you can either chat with a tech or call tech. (Main site for the T6522)
http://www.emachines.com/support/product_support.html?cat=Desktops&subcat=T%20Series&model=T6522

User guide T6522;
http://downloads.emachines.com/userguides/Desktop_UG_Nexgen2_3_en.pdf

Good luck birm!

I wish I could be more specific.
Mike

Please tell me the model number then I will be able to help you.

oon mobo thers pins that go to front finsd ones says pw stick it in eash way try new switch also ove rthose 2 pins ok to get itto light up could be bad mobo

Did some research and found this site which will tell you which pins to test. It is possible also that its not powerful enough for the devices you have. I would try again only giving power to the motherboard pins, of coarse and the hard drive. If works then plug one device at a time.
Good luck

http://articles.techrepublic.com.com/5100-10878_11-1046822.html