[SunHELP] Sparc20 Hardware Problems

[Jon Still]

Hi all,

Picked up a Sparc 20 as a rescue the other day.  Powered it up, all 
seems to be working fine.  I've since removed the CPU (Some form of 
SM71 I believe) as part of cleaning it all out and now it's back in, 
the box doesn't boot.  When powering it up from the power switch, the 
power light flicks on for a fraction of a second before going off 
again.  All fans are running, the disks are spinning up, yet the box 
doesn't boot and I see no POST info on the serial console (with no 
keyboard attached).

I've since put the CPU into another box, which seems to recognise it 
just fine.  I also put a spare CPU into the dead machine with the same 
results.  However this spare CPU now fails to work in the working 
machine (a 2 CPU box) and it gives me some form of access exception.

Has anyone seen this kind of problem or have any idea as to how to 
resolve this?

Cheers,
Jon.

-- 
Jon Still                               E-mail: jon at tertial.org
tertial.org                             Web:    http://www.tertial.org/
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