Dell Power Supply replacement

Here is a tutorial on how to replace power supplies.

http://www.hardwaresecrets.com/article/362

I think you're asking for trouble. The specs at the link you gave recommend at least a 300-watt supply. By the time you figure in the normal load of everything else in the system, there probably won't be enough power from the 250-watt supply to let the card work reliably, and may affect overall system operation. One of the problems with small form-factor computers is that they often use a proprietary power supply to fit the case, and you can't replace it with anything larger. This limits expansion capability. I'd suggest saving your money.

You dont have to replace it with the exact one...just shop around and find a 300 watt ATX power supply. You can find a few good deals around the internet. (tigerdirect.com...newegg.com....etc)

any atx power supply will work. Look on the old power supply to get the wattage rating and get one comparable. If it's 250 watt you can get a 250 or 300 watt, if it's 400 watt you can get a 400 or 500 watt so forth and so on, but I wouldn't get on of less wattage than the original. Go to newegg.com they have lots of choices and at good prices. Hope this helps.

Hello,

You can replace the pc with the same watt power supply or upgrade to around 420W and still be able to run your system within thermal threshold. The power supply should be a 20-pin ATX power supply.

Good Luck
C2Solutions

Hi,
You can find the same psu at ebay with free shipping.

http://itemlistings.ebay.com/sdcsrp?fl=360131455504&product=bestec+atx-250-12e&sconstraints=PriceMin.Value%3D23.00%26PriceMax.Value%3D45.59

A new power supplu can't hurt anything so long as it's right for your Dell. Some Dells with ATX power connectors are wired in a propiretary way. Make sure which way yours is wired before making the buy.

I have already replaced mant Bestec ATX-250-12E power supplies because they have an internal failure. Consider yourself lucky if the thing doesn't power up your computer because it has a problem of imposing the +12 volt line onto the +5 Volt line then blowing out the mother board. Sometimes you aren't so lucky because once the damage is done then it is to late to just simply replace that piece of junk. I was lucky with my daughters E-Machine because if she tried pressing the start switch on the front of her computer it would sometimes come on and sometimes not. She just mentioned this to me and I immediately replaced that Bostec ATX-250-12E before it could do any damage to her computer. If anyone has an older E-Machine or an older Gateway machine then it would be a good idea to see if it uses that Bostec-ATX-250- 12E. If it does then go order another power supply, anything but a Bostec, and instead of a 250 watt order a 300 watt or better. I hope that this has helped those that might have this problem before it destroyes *********** boards. Marty

Essentially any Standard ATX power supply with a rating of 250 Watts or higher will work

http://www.discountelectronics.com/index.php?l=product_detail&p=1849

Yes you can replace the old defective power supply with the new atx but the problem is the size. It the size it fit to your computer nothing to worry because power supply now is almost the same output only the wattages changes.