[rescue] Sun Blade 2500/V250 motherboards - common problem?

[Nemo Nusquam]

On 11/26/18 09:33, Peter Stokes wrote:
> Hi All
>
> This one has been kicking around in my head for a long time and so far no
> obvious resolution.
>
> The Blade 2500 motherboard (and the V250, same motherboard) appear to have a
> death wish problem. A perfectly working board left for a while, when fired up
> just spins all the fans and that is it, no output or anything useful. You can
> change CPU/memory/PSU etc and still nothing.
>
> This behaviour was reported to me some years ago on a batch of around 100
> units, where the guy would ship some them working and on receipt, the above
> issue. (not on all, just a significant few)
>
> I have recently had a similar situation where boards all tested, after
> shipping just would not come up correctly.
>
> Latest is one I have had in store for around 2 months, all tested with VTS,
> then on powerup, again just the fans. Have swapped all components, but no
> response. Happy to believe it is a power/crystal issue, just wondered if
> anyone had come across this and resolved it?
Yes and no.  A Silver 2500 ran fine for six months and the same issue 
after a shutdown was needed for unrelated reasons (electrical work on 
the house).  Another Silver 2500 would not come up, even after swapping 
a bunch of stuff.  Did anything come out of the serial port?

N.

>
> Thanks
>
> Peter
> ---------------------------
> Peter Stokes
> Ashlyn Computer Services
> Mbl: 07977 532320
> ---------------------------
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