Question about E-Machines eMachines T3830 PC Desktop

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T2893 desktop did not power on when I hit the power button

Looks like I need a new motherboard? How can I ensure that I am getting a replacement that fits with the eMachine T2893 Case; present HardDrive; and CD? Will my OS still work at bootup?

Thank you,

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  • got2be_me Jan 26, 2009

    I Have the same problem too. It has been down a couple weeks.
    My Emachine T2893 desktop did not power on when I hit the power button.

    Is there anything else that it could be besides the motherboard?

    thanks for any help.
    got2be_me


  • Anonymous May 01, 2009

    Could there be some preprogrammed self-destruct mechanism inside these T2893s. My parents bought two of these at best buy 5 years ago. Their's wouldn't turn on so they bought a new e-machine. Mine stopped turning on last night. Will I be able to purchase a Mac, remove my hardrive, and then download my info to the Mac?

    How much do the power supplies cost?

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If you can find someone that has the same model, that is the best way to make sure it fits. Some other motherboards will fit, but you may have to do some work to get them to fit. The best way would be to try to do some research on your particular motherboard (mobo) on the internet. Sometimes it will have a manufacture’s name and model on it, try googling it and see what type it says it is (ATX, mini-ATX, AT, etc). One problem you may have is the power button connectors may not be compatible with your new motherboard if you get something besides an emachine mobo. If you are good at electronics it will not be much of a problem for you.

Unless you get an exact e-machines mobo, your OS will most likely not work at startup. Windows XP does not like wholesale changes like a mobo. When it sees that a major configuration change has happened it sometimes freaks out. Sometimes it will just ask you to re-activate windows other times it gets stuck in a reboot loop. Hard rive and CD rom should still work, provide you do not get too new of a mobo. Older HDD and CD drives were IDE connectors, newer ones have SATA connectors. Unless your mobo and power supply unit (PSU) have the correct connectors you will not be able to use them.

To the poster who asked if it could be anything else besides bad mobo. Yes it can occasionally be a bad power supply unit (PSU). A bad PSU does not necessarily mean no power, just not enough power to run the computer. You can try swapping it out with another one of equal or greater output watts. You can try removing the power connectors from the drives and then remove the memory and see if it changes the boot up procedure of your machine. More beeps, different beeps, no beeps, etc. Add one component back at a time to test. Make sure you get the same results and not just a one-time fluke start up. If a memory stick is bad, it usually is bad. A power supply or mobo can be flaky and fail some times and not others.

Posted on Apr 02, 2009

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Hello,
I recommend purchasing the OEM (Original Equipment Manufacturer) motherboard, this will ensure all of your other parts are compatible. Go to Google, type "eMachine T2893 motherboard".  Click on the link, "Shopping Results for eMachine T2893 motherboard".
Here you will have a choice of sellers and resellers for this motherboard.
If you need to read up about this topic, check out this link. 
http://www.emachines.com/support/product_support.html?cat=Desktops&subcat=T%20Series&model=T2893

I hope this helps. Please let me know if you have any questions.
Thank You, Raph30

Posted on Jan 25, 2009

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I dont the wireing code for the power supply

Posted on Mar 18, 2009

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1 Answer

Not turn on and lights a green light on motherboard


E-Machines were known to have Power Supplies that went bad for no apparent reason, the worst part was on some of the computers it also did killed the motherboard, you can pickup a power supply tester at most computer shops for less than $20.00, or you can choose to get a new power supply.
I have found Ebay to be a good source for a replacement

Mar 01, 2011 | E-Machines T2893 PC Desktop

1 Answer

I have a T2893 model that is probably 10 years old. The hard drive just quit on me and I cannot boot back up. It appears completely dead. I changed power plugs to ensure that it was not the power supply. I...


1) Install the harddrive as a slave drive in a known working computer.

2) Install the harddrive into an economical external harddrive enclosure, and plug the USB cable of the enclosure into a known working computer.
[IMHO the better of the two options]

The eMachines T2893 uses an IDE harddrive, (IDE is also referred to as PATA)
This is an example of an IDE external enclosure,

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1337265&CatId=2779

As for the T2893 it could be a bad power supply, and worst case scenario, a bad motherboard also.

Granted the power supply may seem to be working, (Bestec 250 Watt), but it may have a weak voltage power rail.

Enough power to light lights, and maybe spin fans, but not enough for the Processor.
1) ALL the lights use less than 1 Watt of power
2) EACH fan uses 2 to 3 Watts
3) A typical Processor can use 51 to a 125 Watts.

The T2893 comes with an Intel Celeron D 330.

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

The Celeron D 330 can use up to 84 Watts. (Under the heading TDP in the chart )

In essence the harddrive may not be bad.

When you press the Power On button, you are closing a circuit that feeds 5 Volts to the Power Supply. Soft Power On function.

[Brought in, to replace the old style of pressing the plastic Power On button, which in turn presses against a steel rod, which in turn presses against a Power On switch, attached directly to the Power Supply ]

Power goes to the motherboard. The first chipset to receive power, and to initialize is the BIOS chip.
[Chip and Chipset are slang terms to represent I.C. Integrated Circuit]

Bios looks to see what devices are installed, does a Ram Memory count, turns the Processor on, and hands the computer over to the Operating System.
[Windows XP is an example of an O/S]

The operating system is located on the harddrive.
You don't have enough power to turn the Processor on, so there is nothing to process information.
Nothing to find the operating system.

Two of the major faults reported for the T2893, are the Bestec 250 Watt PSU, (Power Supply Unit), and the motherboard.
The primary failure is the Power Supply. When the power supply fails, it has a nasty tendency to take the motherboard with it.

What actions to take, to possibly solve the problem with the T2893, provided the harddrive works?
Suggestions:

1) Test the Power Supply. See if the voltages are correct, and specifically the 12 Volt power.
There are three main voltages.
A) Yellow insulated wires are 12 Volts
B) Red wires are 5 volts
C) Orange wires are 3.3 Volts

ANY Black wire is a Ground wire.

Do you have a multimeter? An economical multimeter can be purchased for around $10 to $12.
(Many stores carry them. An auto parts store is one place)

There is also a power supply tester. Economical versions are around $20.
The 12 Volt power can be 11 to 13 Volts. Anything below 11 Volts, and it's time for a new power supply.

Power supply diagnoses to be good, check the motherboard. Visually look for bad Electrolytic Capacitors.
eMachines are known for using cheap quality Electrolytic Capacitors.
Saves the computer manufacturer money, which they use to sell budget priced computers. (All eMachines are budget computers)

http://www.capacitorlab.com/visible-failures/index.htm

If the motherboard is bad, I have seen replacements offered online.
One motherboard offered had the price of $90.

Now you could be looking at $30 to $50 for a decent replacement Power Supply, and another $90 for a motherboard.
Believe it would be best served to purchase another computer, IMHO.

Have any questions concerning this, please post in a Comment.

Apr 20, 2010 | E-Machines eMachines Desktop PC

1 Answer

Does the T2893 have to have an ATX power supply specifically for the emachine? I tried to upgrade to logisys 480w supply and the fans and a few lights come on, but the unit won't boot up.


there are TWO different power cables on the new machines. (not just two parts to the ATX)

one is the ATX like you are used to.

The other is a small four-prong plug (coming off of the power supply - look for yellow and black wires) find the matching receptacle on the motherboard.

good luck

Oct 20, 2009 | E-Machines T2893 PC Desktop

1 Answer

T2893 desktop did not power on when I hit the power button the green light is on the motherboard change power supply


E-Machines are notorious.....I had the same trouble with my T3624, replaced the MB and alls' well. The green light just shows the power is connected.

Oct 14, 2009 | E-Machines T2893 PC Desktop

2 Answers

No boot, New PS, Green light on MB lights, No Fans running


Bottom line: Either your power supply or (hopefully not) the mother board has gone bad.
Replace power supply (remove old one), take to local independent computer shop, ask them for new unit. Should be around $50.00. - no more. After reinstall, if still no fans, boot, etc. Replace motherboard or buy a new machine. MB's installed probably will run you around $250.00-ish.
Good luck.

gurutim

Mar 21, 2009 | E-Machines eMachines Desktop PC

1 Answer

Computer won't start


hi there


it seems like it cud be either ur motherboard or cpu that has gone.

do you have another machine that u can test the cpu in?

regards Rich


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2 Answers

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Since you are looking inside, try this. Trace the wires that come from the power switch back to the Motherboard. The wires from the switch will connect to two pins on the motherboard. Carefully jump those two pins with a screwdriver and the machine should turn on. I would suggest doing this with all drives and cards unplugged first.

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1 Answer

T2893 e machines wont turn on


It sould be as simple as the on/off switch being bad .. the power supply could be bad .. it is powering the 'led' enough but it is faulty and cannot power the machine.

Try disconnecting all the components .. cd, hard drives, floppy ,etc .. but leave the power plugs on the motherboard .. try ...see if the CPU fan or power supply fan spin up..

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2 Answers

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go to this link for the information you need http://www.intel.com/design/motherbd/sr/sr_con.htm#IC

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