Re: Tyan S5396 Won't Post On First Try When Machine Is Cold

Freddy wrote:
> I am assembling the following new components:
>
> Tyan S5396
> Antec TruPower Quattro 1000 watt ps
> Intel 5440 Xeon Quad Core x 2 with copper heatsink & fans
> Crucial 2GB x 4
> nVidia Quadro 3700
> Seagate SAS 450GB &Seagate SAS 300GB in non-raid configuration
> Windows Vista 64-bit
>
> The 24-pin EPS PWR1, 8-pin EPS PWRCPU, 4-pin PWR2 and PW2 molex power are
> all connected. When the machine is first started, fans turn on max. but no
> post. Let it run for a while, eventually push power button on front of case
> and turn machine off. Turn power back on after several seconds and
> everything works - post, video, fans slow down, install OS & apps, Microsoft
> restarts, everything fine. Turn machine completely off through Windows
> shutdown command, turn on immediately and it works.
>
> But then wait 15 minutes, machine now cold, try again and no post. Turn
> power off from front panel power switch, turn back on immediately and it
> works.
>
> I've isolated the CPUs, taken the mb out of the case four times, removed the
> video card, then memory, still the same.
>
> This is actually the second S5396 I've had that exhibits this behaviour - I
> RMA'd the first one and this is the new replacement that does the same
> thing. Not sure what's wrong - maybe it's the power supply? All the
> components seem to test okay.
>
> Any assistance is appreciated.
>
>
The problem IS the power supply-This is typical i.e. won't power up,
boots up then shuts down, won't turn off and stay off until power cord
is removed from wall outlet. The list goes on.