Michael Wolfson wrote:
> Y'all,
> 
> I've got a Voyager that has in the past worked flawlessly.  Only now, it 
> doesn't start up.  No beep, nothing on the serial port, power LED stays 
> off.
> 
> Any suggestions on resurrecting it before I start ripping it apart 
> looking for bad electrolytic caps?  Maybe bad NVRAM chip?

A bad NVRAM would let the machine boot at least, if a Voyager behaves 
like the other SPARCs. One of the things a bad NVRAM chip does is 
forgetting the regular MAC address.

As there is nothing happening on start up, this looks like a PSU failure 
  to me, but then, my experience to stuff like this is rather limited.

If you have a keyboard and a monitor at hand, plug those in and check 
for POST error codes described here:

http://au.sunsolve.sun.com/handbook_pub/Systems/SSVygr/TrCPU_Sun4m_SPARC.html

Happy bug hunting and perhaps this helps a bit.