Baslinux mailing list

[baslinux AT lists.ibiblio.org]

On Wed, 28 Mar 2007 baslinux AT lists.ibiblio.org wrote:

> On Mon, 26 Mar 2007 17:53:52 +0000 (UTC), baslinux AT lists.ibiblio.org wrote:
>
> > The PSU was said to have voltage spikes - how long would we want to run
> > cpuburn to see if this is the problem?  There is a huge heatsink and a
> > case fan already.
>
> As an electric/electronics tech, I have to comment on this: Voltage
> SPIKES are momentary things, usually lasting only a few milliseconds.
> They are almost impossible to see on any normal form of measuring
> equipment. Their presence is usually deduced only from their
> results -- they destroy the internals of chips which usually
> suffer no visible external damage.
>
> In contrast to this, another fault is when the supplies go
> over-voltage. This is usually sustained for seconds or minutes,
> or permanently, and can be observed with voltmeters attached to
> the supply. But the results are usually that some components get
> broken and their smoke leaks out.
>
> Do you have any explanation from the previous owners as to why
> they think the supply might be delivering spikes?

He said something about using the CD which came with the board to measure 
things.  I did not understand.  The board is now ours to keep since we 
could not find a problem to fix and the owner needed a reliable server.

We do not see any leaky or bulging capacitors on the board itself.  An 
ASUS 1.4GHz with USB 2.0.
Sindi

> Greg