Question about E-Machines EMA IMPERIAL GV (845GV) TG3 eMachines (145119) Motherboard

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Non response from tower

I have just tried to power up an old emachine but no luck... i checked the psu and found it to be dead so i changed it with a brand new one , when powering up this time the processor fan run very slowly and nothing else, no beeps or anything not even a flicker on the screen i would say the psu going the first time also took out the motherboard. I have checked all capacitors everything is fine and i can find no burn out on the motherboard itself....is it worth repairing or will it have taken the cpu and memory out as well

Posted by paul d on

  • paul d Oct 02, 2007

    Thnx for the reply the pc doesnt owe me anything and the psu i always keep a spare so i think retrieve the hard drive and as i have no way of checking the rest i think the bin is the only option..........Thnx again

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If you're hoping for a bargain out of it, it depends how much your time is worth. Given that the PSU was dead, and other components are showing problems, one or more of them were probably affected. Could be the fan is spinning slow due to damage, and the motherboard is refusing to fully init because of the fan... but I doubt it. The CPU may or may not be okay, but the value is likely to be low. The RAM is probably okay, but again, value is likely to be low. Your best bet would be if you had a second similar computer, to try interchanging parts and see which are damaged/working. In general, though, the system probably is of very low value when working. It looks like it may be model T3624; if so, a model recently went on eBay for $140 (including shipping), in working condition and with 512mb RAM. (item 190155139483) Personally, I would try to sell it as-is for $75, with the dead PSU, or the amount you paid for it (if applicable). Depending what the PSU cost you, you could also add that to the price and ask for that, with the working PSU. At the end of the day, the question becomes, how much would it cost to buy this computer (or a similar model) in known working condition? Is the value of your time, or replacement parts, going to exceed that?

Posted on Oct 02, 2007

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Even if those things power up doesn't mean your PSU is still good.
In particular the PSU in eMachines are known to be cheap/bad and one of the first things to go out.

If you have access to one try another ATX power supply.
You don't have to remove the old one just to test.

1) Unplug the existing PSU power cable from the back.
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It's probably ok if the test one is not touching, but I like to put the PC on the side with the test PSU setting on top where the original one is making sure it has good contact with the case to make sure it's grounded.
4) Now plug the AC into the test PSU and power it up.

If it still dosn't power up it's probably MB, or CPU.
You could also unplug it again (you always want to unplug the PSU when doing anything, the power is always on), and try removing any add on cards (like your wireless card), and try again.

If it does power up (you get a POST screen), unplug PSU again, now plug-in drives, then AC back and see if it will boot up.


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hi
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so it possibly just protecting its self

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