Question about E-Machines T1860 PC Desktop

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No power to E-Machine T1860

I have an E-Machine T1860 which I'm not able to boot up. Already checked all the usual, wall pwr, pwr cord, etc. Opened her up and saw the caps bulging on the motherboard. I've never had the issue where the power wouldn't cycle because of this but figured, what the hell. So, I replaced the caps (8 total) around where the pwr supply connents to the mother board. Still a no go. Ohmed out the power switch; it's good. When I did plug the pwr connector back to the mother board, the mother board fan and the power supply fan will come on if I jiggle it just right (hehe). However, if it's fully connected I got nothing. So, while I had the fans running, tried to turn it on, no go. I voltage tested the connection to the hard drive. I'm getting what seems to be an inconsistent overload of voltage to the hard drive (at least to high for my multi-meter to read; got a fluke 77III so it should read high). It's very jump.

Anyway, opened the pwr supply and there doesn't appear to be anything visually wrong. I'm not sure what all the pins from the pwr supply do so I'm having trouble testing the voltages out to determine if the pwr supply or the mother board are bad.

Any suggestions?

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  • Master
  • 479 Answers

Hi,
Issue seems with the power IC of the motherboard need to repair.

Posted on May 29, 2009

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