Help me replace a power supply

[rtcatfish]

I'm replacing a power supply in my mothers Emachine model# T1842. It has a ATX-250-12E. I'm needing to buy one in town and looked at Bestbuy, Officedepot and Officemax. How to I tell if it will work having the same plugs? I saw this one at Bestbuy: Dynex 350-Watt ATX CPU Power Supply Model: DX-PS350W. Can someone tell me it this will work? Or do I have to order one online. Thanks in advance for any help.

[classicsoftware]

As long as it fits in the case it should be fine. Please note the connectors as long as the part the plugs into the power supply matches, you should be good to go.

[preet]

Ya, if it fits in the casing will work fine, but see if you find one which are truepower series at a reasonable price. Think it would be better.

[rtcatfish]

Well I put the new power supply in and it still does nothing. The green power light comes on for a second then shuts off. The harddrive light is on. Any ideas?

[amysiko]

do you see any post screen or etc? any beep heard?? oh...do your cpu fan running??

[Paul Komski]

Why did you replace the PSU? The HDD shouldn't stay constantly on during boot up so perhaps it is the culprit. Try detaching its two cables and see if you can complete POST and get into the BIOS.

[George Hallam]

are the little fidly power conecters pluged in correctly and are all the cables Secure

[1966]

Is this a Pentium 4? If so is the power plug for the processor connected to the motherboard?

[rtcatfish]

There are no beeps. Now lights flash on then stay off. The fan on the power supply turns once then stops. The fan on the mother board never comes on. Then I can hear just a little humming sound from it.

[1966]

Have you changed anything? Added anything? Power problems, surges, interruptions, on off? Have you tried to remove all plug in cards to see if it will boot? Memory cards in place? Is the harddrive led reversed? Have you a spare hardrive to try to see if you get the same reaction? Have your checked the bios battery? Sounds like at this point that its something other than the ps.

[saphalline]

By chance, did this eMachine come with a Bestec PSU? And is the system 2-years-old or more? And did the PSU die? If so, there's about a 50% chance that the PSU died and took the mobo with it. I've seen too many dead eMachines from 2-4 years ago to have much hope at this point.