[wellylug] OT: 4.6V on the 5V rail is indicative of....?

[Phillip Hutchings]

On 29/03/2004, at 10:18 AM, Damon Lynch wrote:

> On Mon, 2004-03-29 at 09:40, Wood Brent wrote:
>
>> Also, how sure are you that this low voltage/PS is the cause of the
>> instability?
>
> The motherboard siren is sounding, unless I turn off the 5V monitor in
> the bios.  Last I looked a few days ago, it was indicating 4.6V.  Under
> sustained load (e.g. installing packages!) the PC reboots.
>
> It is a pretty simple machine: Slot A Athlon 750, 1 HDD, 1 CDRW, 
> GeForce
> 4 MX. So I figure a good 300W PSU should be able to easily handle that
> :)  The Antec 300W is about 4 years old.
>
> Sound like a PSU issue?

Hrm, my server machine is a Athlon XP 1800+, 512MB DDR RAM, 1 60GB HDD, 
1 80GB HDD, 1 CDROM, 1 CDRW, 2 NICs and a Intel i740 graphics card. 
250W PSU, so a 300W PSU should easily handle your load.

I did have a similar problem recently, the machine would restart 
spontaneously when doing heavy work (or not, just randomly sometimes). 
I traced it through the occasional kernel panic to an overheating 
graphics card, so I added in an PCI slot cooling fan from DSE, and 
another one at the front to keep the pressure up, and it's been fine 
ever since.

My +5V was reading quite low at the time, but since I don't have 
anything to monitor it in linux, I can't tell you without rebooting :P

--
Phillip Hutchings
me at sitharus.com
http://www.sitharus.com/