~misfit~ <misfit@'SPAMTRAP'orcon.net.nz> wrote:
<snip lots of troubleshooting>

Please, my learned friends, do any of you have the slightest idea
what may be going on with this POS?  ;-)

It seems you have most everything covered. A little recap of what I
figure you tried

different CPU's
different PSU's; I'm not exactly sure wether you tried with 1 known good
PSU instead of the 2 jury rigged together?
different VGA
different mobo
different power cable
everything disconnected (HDD, FDD ...)
different NIC

A couple of long shots:
Have you tried the original 8Mb RAM (in case both the 32Mb are fried)?
Is the keyboard one of those archaic XT/AT boards with a switch?
(although IIRC that would simply give a keyboard error instead of
failing to boot)
While on the subject of keyboards, have you tried a different one? I've
once lost a mobo due to a short in the keyboard, with (IIRC) similar
results to what you're describing: disks spinning up, no POST.

HTH

Sharku

-- 
Customer: "What does UART stand for anyway??"
Tech Support: "It stands for UART gettin' online"