In changing memory module the "PWR S/W" (black and white wires) became disconnected from the board. The board is a Bestec ATX-250-12E in an eMachines T2893 tower. Can someone put me on a schematic for that board or just tell me where to reconnect the "PWR S/W connector
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Re: Bestec ATX-250
Junk the PSU. The worstec ATX-250-12E has flaws in it's 5vsb rail, which causes it to fail after a few years, dilevering way over 5 volts and frying the motherboard.I love putting bad caps and flat batteries in fire and watching them explode!!
No wonder it doesn't work! You installed the jumper wires backwards
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Re: Bestec ATX-250
Greetings, and welcome to the forum.
It sounds like you are describing the wires connecting the POWER switch on the case to the main printed circuit board inside the case. Is that correct? The Model number you gave, Bestec ATX-250 12E is the model number of the power supply, which is inside the metal box with that label on it.
That model power supply is very controversial. It has a serious design flaw, and with time is known to not only go bad, but also to burn out the main printed circuit board and other assessory components.
I do not have an emachines computer, but have worked on a number of Bestec power supplies. The Bestec ATX-250 12E cannot be trusted unless it has serious modification of the 5vsb circuit. I am sure some of the others can help you with the location where that Power switch wiring attaches to the main pc board.Old proverb say.........If you shoot at nothing, you will hit nothing (George Henry 10-14-11)Comment
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Re: Bestec ATX-250
Couldn't find much information on what your motherboard model is, but a few sites said it's an Intel D845GVSR (also under the name of SEABREEZE-T3). If you have the CD that came with your T2893, see if there's a motherboard manual in there. If not, here's the manual for the Intel D845GVSR (I suggest that you look at it closely in order to verify that you have the same motherboard).
Page 32 of the manual says pin 6 is the power switch, so I guess you'll want to connect the power switch on pins 6 and 8 (8 is ground).
Before you do anything, however, take everell's advice and replace the power supply. That particular Bestec is known to be problematic.Comment
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