Question about E-Machines T2742 PC Desktop

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My emachines T3828 will not power up. I changed the power supply, but that didn't help. my next suspect was the power switch. I found that the wires wer a little loose. Thinking that the power switch wires were one unit, I pulled them. Imagine my surprise when I saw that they wer actuall three seperate wires, One black and white, One blue and wdhite, and one red and white. I need to know how to reconnect them, and in which order. I also noticed that a green light comes on. I assume this is for the standby mode.

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  • kenwarner Jun 27, 2009

    I have two jacks on the motherboard that face each other like opposible thumbs. I really don't know which of them is the right one to plug the wires into. Also, do they plug in up and down, or sideways?

  • kenwarner Jun 29, 2009

    Both experts were helpful, but I ran out of options. This computer is just dead. Thanks anyway for trying, guys.

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Hello there,

The green light on the motherboard is there to indicate that you are in fact getting power to the board, which is good.

The wires you refer to are in fact the power switch, reset switch, and probably some type of light (power light on the front, or possibly the hard drive access light which is the one that blinks when you are doing something on the computer).

There is some good news and some bad news.

The bad news is that there isn't an easy way for me to know what order they go in since all motherboards are different.

The good news is that you can't hurt anything by plugging them in the wrong order. Usually the little wires will have a plastic end on them that has some sort of label (typically something like POW SW, RES SW, HD ACC, something like this). See if you can locate one that talks about POW or POWER. If they don't have any writing on them that's ok as well, just try one at a time. Plug them in one at a time, trying all three positions, each time you try hit the power button to see if you can get it to come on. You will know right away if there are any fans in the case, they will start spinning once power has been activated.

Obviously the most important one is that power switch, once you have that in place you can leave the other two off if you want, it won't hurt anything at all. To reset your computer just hold down the power switch for about 10 seconds, it will turn off, then turn it back on.

You can also plug in the other two trying both other positions until you see a light lit up on the front of the case (you can even do this while it's running as long as you are careful, those little plastic plugs don't have any electricity whatsoever so there is nothing you can damage, even while it's running, just be careful for moving parts! =) )

Alot of the times there will be writing on the motherboard as well, next to the pins that indicates which pin is which (again it will probably be abbreviated to something like POW SW).

If you are still unable to get it going check out my website at timgrayson.net and give me a call.

Thanks sir,

Tim

Posted on Jun 27, 2009

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Hello!

From left to right, top row:
[empty] [empty] [PowerSW White] [PowerSW Black] [no pin]

From left to right, second row:
[HDDLED Red] [HDDLED White] [empty] [empty] [empty]

From left to right, bottom row:
[PwrLED Green] [PwrLED White] [empty]

Hope this would help!
Ryan

Posted on Jun 27, 2009

  • Ryan Amontos
    Ryan Amontos Jun 27, 2009

    Hello,

    Plug the wires in upper left side of the row and make sure to follow the color combination that I previously posted. Checked also the pins on how to plug it in. It's easy.

    CHeers!
    Ryan


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1 Answer

Diagram and pen out power supply and power switch placement emachine t3828


The eMachines T3828 Desktop PC uses an Intel D845GVSR motherboard.

1) Socket 478 processor socket

2) Comes with an Intel Celeron D 335 processor that uses a Socket 478 processor socket.

http://en.wikipedia.org/wiki/List_of_Intel_Celeron_microprocessors#.22Prescott-256.22_.2890_nm.29

Celeron D 335 / part number RK80546RE072256

3) The motherboard chipset is an Intel 845GV
[The Northbridge chip is an Intel 82845GV, and the Southbridge chip is an Intel 82801DB { ICH4}
Intel 82845GV and Intel 82810DB are the part numbers on the chips]

http://en.wikipedia.org/wiki/List_of_intel_chipsets#Pentium_4_Chipsets


Here is the motherboard manual you requested,

http://downloadcenter.intel.com/Detail_Desc.aspx?lang=eng&DwnldID=15210

On this page click on the top file>
D845GVSR_ProductGuide_English.pdf
(Date 07/01/2003)
Go to the right and click on > Download

On the next page left-click on the empty circle to the left of>
I accept the terms in the license agreement

The file will automatically start downloading
Let the file download all the way before looking through it.

Connecting Internal Headers - Page 31 in the PDF file page number box at the top

You want C - Front Panel

The plastic front of your computer is the Front Panel
Cables (Wires) coming from the Front Panel go to the Front Panel header on the motherboard

Connecting the Front Panel is shown on Page 32

Processor to the Top, Ram Memory slots to the Right, the Front Panel header is at the Bottom Right. It is right along the bottom edge of the motherboard.

There are 4 pins across the Top
There are 5 pins across the Bottom
The Pins are numbered.

Starting on the Left side of the motherboard going towards the Right,
the Top row of pins are numbered 2, 4, 6, and 8

Starting on the Left side of the motherboard going towards the Right,
the Bottom row of pins are numbered 1, 3, 5, 7, and 9

A) Pins 1 and 3 are for the HarDDrive Activity LED light.
Pin 1 goes to the Positive ( + ) wire

Pin 2 goes to the Ground wire ( - )
If the LED is dim after installing switch the two wires around


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

C) Pin 9 is for the 5 Volts DC

D) Pins 2 and 4 are for the Power On LED light

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

Page 34 shows you where the power cables from the Power Supply go to the motherboard.
Connecting Hardware Control and Power Cables

D shows you where the 20-pin ATX main power cable goes.
Typical 20-pin ATX main power cable,

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain20

A shows you where the 4-pin +12 Volt power cable goes, (Power for the Processor),
Typical 4-pin +12 Volt power cable,

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

B is where a Chassis Fan connects to. (Computer case fan)

C is where the Processor Fan connects to

E is for another Chassis Fan

If you have further questions please post in a Comment.
Sorry it took so long to reply, I just saw this problem.
Regards,
joecoolvette

Nov 01, 2010 | E-Machines (T2958) PC Desktop

1 Answer

I need a motherboard manual for CPU4266CEL Motherboard. It is in a emachines T3828


Hi


You can view/download the manual for your emachine from this link---

eMachine T3828 user/hardware Manual

Daniel Scott

Jun 28, 2010 | Intel CELERON 2.66Ghz CPU AND MOTHER BOARD...

1 Answer

I NEED TO KNOW HOW TO CONNECT THE POWER SUPPLY FOR AN EMACHINES T1120 COMPUTER. CANNOT FIND A SCHEMATICS DIAGRAM ANYWHERE.


After reading an article about Emachines awhile back, I found out the reason you can't find the schematic- it isn't available, as some motherboards are made specifically for Emachines and therefore not distributed, as they might normally be, but again, others are, but you have to identify them and go through another source to get them- Emachines, appartantly, will not supply them. All is not lost, however...all motherboards have, basically, the same hookups and connectors for the power supplies, hard drives, etc.- they are standard. I found a web blog that explains the power switch, reset, and power led, which will help. Here it is: http://www.computing.net/answers/hardware/emachine-power-sitch-wiring/56545.html
This site will explain about the 24 pin connector from the power supply
http://www.tomshardware.com/forum/53750-7-installation-manual-rs480m-w3400-emachine-motherboard
If you google "motherboard wiring" you will find sites that have illustrations of the motherboard, and explain which connectors go to which sockets, and how to identify them.
With a little patience and determination, you should be able to hook everything up from the various blogs on the net. Hope this helps.

Apr 17, 2010 | E-Machines eMachines Desktop PC

1 Answer

EMachines T3828 won't turn on. Any way to determine whether problem is power supply? thx!


Had the same problem and ended up replacing the PSU. Try re-seating the memory and video card first but if your not getting any power on beep codes then it is likely that the PSU and possibly the motherboard have failed (google emachines power supply failure).
Try a new PSU, it worked for me and was a fairly cheap fix if nothing else works.

Sep 19, 2009 | E-Machines Emachine T5026 power supply **...

1 Answer

I have emachine w3400 not powering . plz help


I found this right on this website, hope it works!
As for the fans, make sure your connections are tight and in the proper sockets.

Jul 09, 2009 | AMD eMachines Desktop System w/ 17'' CRT...

1 Answer

I dont know where the wires go for the power switch, not labled on mother board.gateway emachine T3828


it should be labelled on the motherboard yes near the small pins, I think 2 pins, look closely the writing is very small, near the reset switch, should say power or something along them lines

Jun 23, 2009 | Computers & Internet

2 Answers

Emachine T3828 power switch connection to motherboard


The "Ultra Helpful Instructions" that Emachines provide (here: http://downloads.emachines.com/userguides/8511279_eM_NG3_chassis_HW_ref_en.pdf) state that when replacing the system board, "18. Attach all cables to new system board", but fails to say where that would be for each cable.

The site below says it's a genuine Intel board in there, so, congrats on that. http://www.e4allupgraders.info/dir1/motherboards/socket478/D845GVSR.shtml

And with that, the link to the manual:
ftp://download.intel.com/support/motherboards/desktop/D845GVSR/SR_English.pdf

You're looking for the info on page 32, I believe.

See if that fixes it up. If not, post back.

Jan 03, 2009 | Intel CELERON 2.66Ghz CPU AND MOTHER BOARD...

6 Answers

Intel emachine t3828


Geeze, after working on hardware for 27 years i love the short circut dummie. Anyway yes, it's the motherboard / yes the green light will still come on on that model and quite a few other models. Dont worry about repairing / i.e. removing components on the motherboard, it's a fruitless endevor but a great way to waste time. A motherboard for that model will cost about 100-150 bucks / easy replacement. It's actually rare for both the power supply and mother board to go out on a tower/mini tower type system. Older laptops had that type of prob. Those emachines were **** for the mostet part. On the other hand Gateway has really gone up in quality and i have been quite impressed with them in the last few years...

Jan 14, 2008 | Intel CELERON 2.66Ghz CPU AND MOTHER BOARD...

2 Answers

EMachine no power


Ok for a start the power switch is not green and white that is the power led, you need to look for a red and black wire normally marked on the connector and motherboard as pwrsw or pswitch.
if you believe it to be the switch unplug the connector and jump the connection on the motherboard using the reset switch or a jumper, or not recommended but have done this myself many times using a flat blade screw driver very carefully and touch the 2 pins to complete the circuit.
if it doesnt power on then its more than likely it is the power supply but the motherboard being faulty could also cause this to happen.
the problem i have found with emachines is that its difficult to get replacement power supplys

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