Re: PC Power supply

Charlie Bress wrote:

My son has an E-Machine T3828 that will not power up. Unfortunately
he is around 100 miles away so I do not have more information. There
were no changes made to the PC that might have caused this.
At first glance it is easy to blame the P/S itself, but a new
replacement did not help.

A detail: He reports that with either supply there is a single LED on
the M/B that lights up. What controls this light?
On either P/S there is no other sign of life. No fans turn on.

What are the likely causes?

I have considered some. The power switch may have failed. Or the
mechanical link from the front panel to the switch.

IIRC there is a pin on the M/B-P/S connector that provides an input to
the supply so that the supply turns on.. Is that a set level? What
controls it?

I am considering having him drive down with it. I can repair
electronic devices, but I have never come across this situation.

Is there a likelihood that the fault is in the M/B?


Thanks,

Charlie

This is a very common Emachines failure mode ! About three years old ?
M/b CPU, PSU usually. Very often other items are taken out as well.
Unfortunately the little led only means the the sb power is there.

--
Best Regards:
Baron.
.

Relevant Pages

  • Re: PC Power supply
    ... What controls this light? ... No fans turn on. ... The power switch may have failed. ... I've seen bad motherboards cause this, could also be the power button or the ...
    (sci.electronics.repair)
  • PC Power supply
    ... My son has an E-Machine T3828 that will not power up. ... What controls this light? ... No fans turn on. ... The power switch may have failed. ...
    (sci.electronics.repair)