Re: Machine dead after power outage. Why, and what to do?

On Jan 30, 8:19 pm, MCheu <mpc...@xxxxxxxxx> wrote:
On 30 Jan 2007 15:42:43 -0800, "JohnClutchF...@xxxxxxxxx"





<JohnClutchF...@xxxxxxxxx> wrote:
Yesterday morning there was a blackout while I was using the
computer. The UPS kept the machine going while I saved the file I was
working on, then shut the machine down normally, no problem. I turned
off the UPS and unplugged everything from the wall. The power was on
by then, but around here outages tend to come in a series, so I left
things as is, then went to work.

When I came back, the computer was completely dead, in which state it
remains. About all I can add to that is if I connect the power cord
to the wall outlet and keep my ear close, I can hear a brief
crackling, so I guess it's drawing something.

Two questions:

(1) Why did this happen? At no time was the computer, or anything
connected to it, unprotected. (Except for the printer, which is
plugged directly into the wall outlet and connected by usb, and it was
unplugged when I left.)

Check the back of the PSU. There should be a toggle switch in the
back of the PSU. Unlike the push button up front, this one's a REAL
power switch like we had in the old days, and it'll kill all power to
the system. On some PSUs (at least all the ATX ones I've used), this
switch will automatically trip to OFF if power is interrupted. You
have to flip that switch back, while there's current going to it to
re-enable the PSU.

Turns out that one power supply just has a voltage select switch, the
other not even that.

.