Question about E-Machines eMachines Refurbished EMA SYSTEM BOARD MODEL T2984 eMachines (102257) PC Desktop

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No power on my emachine

I got a desktop emachine from my brother and it has no power .. i had the ps checked and it is getting voltage does that mean it is still good and if not what else could it be.. please email me at john.scaife@thule.com

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The power supply might be okay but the system board could be bad and not turning the power supply on when you press the power button.

On this page:
http://www.helpwithpcs.com/courses/power-supply-basics-inc-pinouts.htm
about midway down is a nice diagram of the power plug from the supply.

If you take a short jumper like a paper clip and touch the
PS_ON pin to the ground pin on either side, the supply will turn on if it is working correctly. You'll know cause the fan will start. If the supply turns on the system board is the likely cause. Check for an obvious problem like the cable to the front panel switches having come off the board.

The boards in eMachines are a common trouble, but there could be something connected to the board causing it not to respond. Try disconnecting the cables from the board to the drives and remove the memory, and clear the CMOS (either remove the round backup battery or use the jumper that's normally in the same area). Try the power switch again, and if the unit still doesn't start up it's the board.

Posted on Dec 17, 2008

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Open the machine - try to change the SMPS.
Hope the Power-oN button is not the problem.
Else there could be many reasons.

Posted on Dec 17, 2008

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