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Emachines C2825 problem

The power supply went up in smoke and evidently took out the motherboard too. I need to find a replacement as the company emachines referred me to ( no longer carries the part.

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Re: Emachines C2825 problem

I had to replace the mobo in my T2865 Emachine,because of the power supply was insuffient at 250 watt(Bestec). I found a 400 watt PS on Ebay for about 30.00 (New) and purchased a Winfast K7S741MG from a local computer shop for about 60.00 and it is working just fine, after 6 months.First thing,Unplug power from cpu ! Get rid of that Bestec 250watt and replace with a 350-400 watt power supply or you will just be burning up another mobo.
I would advise marking position of the cables before uninstalling the old mobo. Then, remove cables and remove the screws that secure the mobo.Reinstall the new Winfast mobo, hookup cables and run the software. Should work fine!
I,ve seen both mobo & power supply on Ebay for less than what I paid. I hope this helps a little

Posted on Jan 30, 2008

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Re: Emachines C2825 problem

If you know the motherboard is bad as well, you have two options. You can salvage the existing case and parts, and replace the motherboard and PSU. Plan on spending around $100-150 for both together. This assumes the CPU and RAM are undamaged. The second option is to buy a different "bare-bones" system, and transplant the parts into that one (CD/DVD drive and Hard Drive). Unless you have an exact replacement for the motherboard, you'll probably need to reinstall Windows. The easiest way around this is to install Windows onto a new hard drive, and attach your old hard drive as a "slave" or "secondary". These two options are centered around off-the-shelf parts, rather than buying a "brand X" computer. If you prefer "brand X", which includes an 800 # you can call, look at Dell. eMachines and Dell both produce low-cost low-quality systems, but Dell is better at it. For ideas on parts, look at an online retailer like NewEgg. For compatability, this is mostly a matter of using a tape measure and/or counting pins; they have low prices because they aren't there to hold your hand; if you would feel more comfortable with some hand-holding, which is fine, buy a new "brand X" computer. Lastly, keep in mind, the difference between a $500 computer and a $1500 computer is more than profit margin. If they don't say exactly what a part is, it's whatever was cheapest at the time. A $500 computer may be all you need, but it will have problems like this; whether that's best for you, is for you to decide.

Posted on Oct 01, 2007

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Asus N53JQ-SX252V smoke came out vent then later screen went blank no go. I presume another motherboard is required. Can you advise the Part Number of a motherboard and where available?

You need to identify the source of the short/smoke before you can assume the motherboard has failed.
It may only be the switch mode power supply that has failed.
If you cannot see any charred marks on the motherboard then try another switch mode power supply in your computer.
You maybe lucky if it boots up.

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Will not power up

This is a common problem with Emachine motherboards, the problem is the power supply is a best tech and allows voltage surges to the motherboard which fries it too. If available you usually have to replace both the power supply and motherboard. I do not know what exactly goes bad on the motherboard but I have replaced many emachine power supplies and motherboards. The motherboard kit which used to be available from Emachines included a power supply and no warranty if you didn't change the power supply. They knew they had a problem.

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I need to find a manual for my emachines motherboard. the computer is a 1300g emachines desktop. my power supply went out and i want to put the board in a new case.

motherboard mannuals can be downlaoded from the manufacturer's website.
Else you can google it by giving the MB specification

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Need picture of mother board for Emachine C2825

I've built a PC myself, each connector had text on it to say what it was and one arrow on it in relief, don't know wether that indicated plus or minus anymore.
Anyway, I recommend you just plug them in, and try to boot the PC. If it doesn't boot, switch the Power SW connector around, then it should boot. Do the same with the LED connectors, and it should work just fine!

Good luck,

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I have a emachines 820 and the power supply unit went so i get a new one and replaced it but now my pc will not turn on the info i have on the hard drivers is there any way of saving it or have i lost...

you have not lost everything, the first thing you want to do is to confirm that all is plugged in properly with new PWR supply, newer supplies have a yellow and black power cable coming from them that is part of powering your motherboard, if needed there will be a little plug near the CPU somewhere that it will go in, short of that being your problem, you will have to move HDD to another computer as a slave and retrieve your data that way

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Emachines 390 blinking led but no image

The problem could be many thing. Does it beep ? Can you see a white blinker on the upper left corner of the screen ? If you answer no for both questions, it coulb be the internal memory (ram) that is defect or even just dusty. But many other things could cause that. you can go to the link below and chat with a eMachine technicien.By the way when you try to turn off the computer, hold the power button until the computer shuts down.

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1 Answer

Cant get any picture through the moniter tryed agp vidieo card and pci vidieo card still nothing the motherboard is out of emachines c2280 L7VMM2

Sounds like you have a bad power supply or motherboard. The power supplies in eMachines are not known for reliability, so try testing the system with another one. If you still have no video, you should replace the motherboard.

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1 Answer

W2646 crapped out

Some eMachines computers (like many from Dell) use a non-standard pin out for their power supplies, so if you try a standard ATX power supply it may not function.

However, in my experience it IS likely to be the motherboard. Luckly I have been able to replace quite a few of the eMachines mobos with a standard mATX mobo, since you can probably remove the IO plate. You'd certainly want to replace the power supply when doing so.

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7 Answers

Motherboard taken out by eMachines Bestec power supply

I have not identified the specific components on the motherboard that blow, but I can tell you the defect in the Bestec supply. The +5 VSB, which is the voltage that is on at all times, loses regulation and climbs to 8-11 volts. I believe this "higher than the required" +5V takes out the components on the motherboard involved with the computer/power supply "turn-on" circuitry. The "on" button on the eMachines front panel no longer turns the motherboard on because the "kept alive when the main power is off circuits" - which allow the on/off button to do its job of turning on the machine - no longer work.
Test your Bestec power supply by plugging it in the wall socket and have it not connected to anything. Read the voltage between the purple wire and any black wire. If you see +5.0V, then this wasn't your problem. If, like it did on mine, is closer to between 8, and 11 V, this is what took out the motherboard.

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There are 4 major components that can die:

1. Power supply.
2. Motherboard.
3. Processor.
4. Memory

It is more likely that the motherboard died to. Thing is that as you buy the components to fix the problem you might get to a cost of a new computer all together.

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