Question about MGE 400W Power Supply (QG) Power Supply

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I need a new power supply

I have a MGE 400W power supply which recently failed. I'm trying to find out if there is a swap policy or warranty on this unit. I bought it used but I haven't been dumb enough to crack open the power supply. Please help.

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It's not more than 1yr and you would need to be the original purchaser with a receipt. MGE does not allow owernship transfers on warranties.

Posted on Nov 27, 2008


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Hello, please can you help me i have a lenovo thinkcentre m57p 9196 and i am wanting to upgrade my power supply to either 350w or 400w, does anyone know what type of supply would i need for this unit

The best way to get a new switch mode power supply is to remove the existing power supply and take it to the computer shop. You can see the various types of connectors on the existing power supply, just select a 350W or 400W power supply with the same type of power connectors as your existing power supply.

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Power light goes on and fan is on but the monitor says no signal. all connections have been checked and system rebooted, still says no signal. It also has a graphics card that recomends 400w power supply...

That's most likely your issue you definately don't want to run a recommended 400W on 250 you might get away with 300-400, but I doubt 250 is giving the card enough power to run and give you display. You, could unplug your Hdd, cd/dvd drive basically everything except motherboard,powersupply, ram, cpu, and video card to see if that lowers the power load enough to get an image, which would then mean its definately the lack of power and you need a new power supply.

May 12, 2011 | Computers & Internet

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I will buy new graphics card ati radeon 5670 that need 400 w.. on my power supply says max 305 w and peak 400w... i dont know whats right.. does it have 305 w or 400w?

Hi karban0
It means your power unit could deliver max 400W in extreme conditions but only for a very short while ( one or two seconds or even less ) .
So , you could encounter great difficulties to get your pc running smoothly under heavy conditions , especially if you are a fervent game fan .
It would be wise to replace your power unit by one of a larger wattage . This is very easy and relatively cheep operation .
Regards ,
fanaudi .

Mar 13, 2011 | ASUS Video Card ATI RADEON HD 5670, (1 GB)...

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Most computer testing facilities will test your current power supply for free. A replacement is very inexpensive to replace. Bestbuy, MicroCenter, small computer shops and buy replacemnent from, Just make sure you have the correct information for your replacement. The model number on the power supply would be your best bet in most cases. Good luck and have a great day. I buy power supplies as low as $15 dollars Generic

Jan 25, 2011 | HP ATX-400W, ATX-400W Rev. T1, HP P/N:...

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Why power supply did not work

You didn't include any additional details about your power supply so the reason that it's not working could be one of several.

I assume you're plugging this into your motherboard correctly. Make sure the main connection pins are lined up correctly. In truth, you shouldn't be able to do this incorrectly due to it only allowing it to be inserted in one direction. Another note, you can't just plug it into the wall and expect the fan to go when the circuits aren't complete (i.e testing it outside the computer).

In newer systems that is an additional 4 prong plug wire that needs to be attached to the motherboard, in addition to the 20 prong (the only BIG one) plug

Lastly, power supplies are very cheaply built, so it's also possible it has just died. You didn't mention that it was working originally either, so I don't know if it not working is a new thing.

I usually get a 'good' one (higher wattage, 600-750W or more) and reuse these from system to sytem. What's a good one? Well, that's up for discussion, but one that feels heavier, has detachable cables, and dual 12v rails. These are the features I like to see. The higher initial investment easily pays for itself over the longer lifetime.

Jul 27, 2010 | MGE 400W Power Supply (QG) Power Supply

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I damage the power suply, I need to buy.

SMPS for the ATX available at any nearby store.

Feb 14, 2010 | Dell OptiPlex 170L PC Desktop

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The power supply has failed, Check the power supply on another computer, if still the same you will have to purchase a new one. 400w to 550w should be sufficiant.

Feb 02, 2010 | ASUS P5PE-VM Motherboard

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Do you have a diagram that would show me step by step how to install the new power suply I bought for my computer.

Their is really no diagram to show you how to hook up your supply.
You only have a hand full of plugin connections.
Your 24 pin connection to the mother board, you may or may not have a 4 pin 12 volt video connector, which has to be connected if on the board., and your fan connections.
Everything else is controled thru the motherboard.

Nov 25, 2009 | MGE 400W Power Supply (QG) Power Supply

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What is a good replacement for the MGE 400W

all you have to do is swap it with another one with the same specs connectors and wattage, thats a good PSU, i'd replace it with 550 wats

Nov 27, 2008 | MGE 400W Power Supply (QG) Power Supply

1 Answer


Wouldn't like to try but the cables are the same and using the connectors in the correct formation you should be able to but risky.

Thanks J

Jan 30, 2008 | IBM Netfinity 400W H/S Redundant Power...

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