On 12/22/06, <b class="gmail_sendername">John E. Kreznar</b> <<a href="mailto:jek@ininx.com">jek@ininx.com</a>> wrote:<div><span class="gmail_quote"></span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
> ... static electricity keeps shutting down a computer we recently<br>> built ...<br><br>What do you mean "shutting down"? Does it simply freeze as though<br>something is going into a tight loop, or does power get shut off?
</blockquote><div><br>It just shuts off. I rub socks on carpet, touch front of case, system completely shuts off. Doesn't freeze. Last motherboard I tried would restart. <br></div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Have you probed anything with a 'scope? If the power supply is<br>turning off, it must be being commanded to do so, and it would be<br>interesting to investigate the source of the command.</blockquote><div><br>Probed with a scope? Hm, don't think so.
<br></div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">I once added memory (256 KB to a Microdata 3200 -- big stuff in the<br>'70s) which turned the computer into a veritable noise detector --
<br>extremely sensitive to static discharge. Turned out to be a design<br>flaw in the CDC memory. I fixed it by rebuilding the refresh circuit.</blockquote><div><br>I tried with a different motherboard + different RAM ... still did it.
<br></div><br></div><br clear="all"><br>-- <br>Matthew Gallizzi