We fixed it!
A new network fanout that (gasp!) actually powers up! We tested several others, none of which would give us a little green power light.
We’d been bypassing the system that needed the network connection, so I hooked it back up and finally saw….. READY!
We took a run of 6000 cosmic ray muon events this afternoon đŸ™‚ There are still some software/configuration kinks to work out, but it was a great way to end the summer.