Try changing the CPU fan. The thermal sensor may shutting the board down,
because the CPU is over heating.
Even if the fan is running it still could be bad. Also it may  not be
seating properly against the CPU.

Good Luck,
Wayne Ware

On Mon, 11 Nov 2002 02:05:01 -0500 John Long <[log in to unmask]> writes:
> Hi,
>  I have a A7V333/Pa/Raid/u/139  Asus motherboard. It will not power
> on.
> I have tested the powersupply with a ATX PS tester all ok. I have
> tested the chassis for excess leakage in Uamps with no high results.
> I Run the PS with the atx ps tester and all is ok I hook up the
> Mother board and it runs for 3 seconds then dies leaving the light
> on in the right hand corner of the Motherboard. I have contacted
> ASUS and they replaced the board. Still the same thing exists. I
> have hooked up a IWILL MB and get the same results with a NEW PS
> that tests fine with the atx ps tester. I tried a p4t533 by asus
> with a p4 2.5 mhz processor same results. I have tried two
> processors in the ASUS by AMD, one is a 1900 the other a 1800. I
> have placed the 1900 in another computer I built a year ago and no
> problem with the processor. I have built many computers but this is
> really strange. Static electricity? What do you think, I am at a
> loss, I have even tried moving away from my work shop and the same
> results occur!.........HELP!
>
>          PCBUILD maintains hundreds of useful files for download
>                      visit our download web page at:
>                   http://freepctech.com/downloads.shtml
>
>

         PCBUILD maintains hundreds of useful files for download
                     visit our download web page at:
                  http://freepctech.com/downloads.shtml