Power Problem (slightly offtopic?)

From: Marvin <marvin_at_rain.org>
Date: Sat Jan 17 23:00:50 1998

John Higginbotham wrote:

> I was putting together this system the other day at work, got everything
> setup, turned it on, and it was fine. But when I hit reset or power down,
> I
> can't get it to come back up at all. The hard drives would init, the
> cd-rom
> drives would power up, but nothing would come up on screen, no memory
> check, etc. I could then reset a few times and it would eventually come
> up.

One of the problems with the older switching power supplies used on the IBM
and clones was the "power good" line (2nd from the end furthest from the red
wires.) If it didn't come up, the motherboard would not fire up and sit
there waiting for that line to tell it that the power was okay. Other
wierdnesses occurred when the line went true before the power supply was
truely up to spec. On one unit, I used to have to hold in the reset button
while turning on the computer in order to get it to fire up properly.
Received on Sat Jan 17 1998 - 23:00:50 GMT