OT: Kludging a PC's power-supply control

[Vaughn Treude]

It's in the XP series; I believe this one's a 2600+.  I think the K6 was
the previous family, and the socket was a 7 for those, if I'm not
mistaken.  But thanks anyway.
Vaughn

On Fri, 2006-04-07 at 18:28, Technomage wrote:
> I think I have a spare one of those laying around.
> 
> Id' have to check. those are the ones that take the old amd k6 variety cpu's 
> correct?
> 
> On Friday 07 April 2006 18:31, Vaughn Treude wrote:
> > P.S. If anyone has a used socket-462 motherboard they'd like to get rid
> > of, I'll buy it from you.  (I can probably find one on-line somewhere,
> > but I thought I'd ask anyway.)
> >
> > Vaughn
> >
> > On Fri, 2006-04-07 at 18:25, Vaughn Treude wrote:
> > > Hello,
> > > Here's one for you hardware gurus.
> > >
> > > I've got a PC that has behaved badly on and off; shuts off sporadically.
> > > It's a problem that was occasional at first and has gotten worse as
> > > time's gone by. After a lot of messing around I've convince myself that
> > > it's a hardware problem. (There are absolutely no messages in software;
> > > the logs just end suddenly. And I've swapped out everything except the
> > > video card, a Radeon 7500 AGP, seems doubtful that's doing it, but I
> > > suppose it's possible.) Troubles are, (a) the motherboards's out of
> > > warranty, and (b) I really like the board otherwise, it's got the best
> > > on-board sound hardware I've ever heard. (It's an Abit, with a
> > > socket-462 AMD processor, if you wonder.) Yeah, I should've returned it,
> > > but it's so much hassle when it's mail-order and home built - take
> > > everything apart, take out the CPU and RAM, package it up, and lose the
> > > use of the system for a month until they send you a new one.  So if the
> > > problem is at all tolerable I live with it - foolish, but that's water
> > > under the bridge.
> > >
> > > The deal is that I've always assumed this was the ACPI malfunctioning;
> > > when it shuts off it's hosed and you can't reboot it until you manually
> > > shut off the power-supply switch for 10 seconds or so - I'd guess that
> > > has to turn off the 5V standby power so something can be reset.  So I'd
> > > like to just shut ACPI off, but it appears that the BIOS just won't let
> > > you shut off this feature. (How obnoxious is that?  Is that some kind of
> > > "Energy Star" certification requirement?) So I Googled for a while and
> > > found some postings somewhere from someone who got the bright idea to
> > > bypass the PS-ON signal in the ATX power supply connector, and hold it
> > > low so the mobo can't turn the PS off.  As an experiment, I rigged a
> > > power supply cable extender to a SPDT switch which would allow me to
> > > either route the PS-ON signal normally or tie it to ground.  It's weird;
> > > I can turn it on via that switch but the system won't boot, probably
> > > because nothing tells the mobo that's what it's supposed to be doing.
> > > So I figured that if I did the bypass switch after the system was on, it
> > > would bypass PS-ON, thereby preventing the sporadic shutoff.  That
> > > doesn't appear to work, as it shut itself off while I had the signal
> > > bypassed.  Now I wonder if they actually use the PWROK (AKA "Power
> > > Good") signal for this ACPI garbage.  Or is it possible that PWROK
> > > signal can also indicate some sort of sporadic problem with the power on
> > > the board?  (Kind of like the "Check Engine" light on your car, which
> > > can mean anything from "your gas cap's loose" to "your engine's about to
> > > explode.")
> > >
> > > Oh well.  I think this board's ready for the garbage, but if anyone has
> > > any other suggestions, it would make for an interesting experiment.
> > >
> > > Vaughn
> > >
> > >
> > >
> > >
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