Nucleus rev b missing from network Roon device list (ref#UXHQI6)

What’s happening?

· Other

How can we help?

· I'm having trouble with my Nucleus hardware

Other options

· My Roon software won't start up

Describe the issue

I have a Nucleus rev b that refuses to appear in my network Roon device list. I was using it as an end point only but it started to go missing. Rebooting the Mac I have core on would eventually get it back, to show in the list. But now it’s gone for good. I even tried to launch it as a core but I can’t. It’s a good looking brick. What can fix it?

Describe your network setup

Comcast modem, Cisco gigabyte switch, 8 ports, Eero mesh with two devices. However, I have all the Roon core and nucleus hard wired with cat 5 or 6 cable.

Hi Charles,

Fellow user here, I would suggest plugging a monitor up to the Nucleus and see (capture a pic) of what is displayed on the screen when you start it up. If it is working okay it should display it’s IP address.

Hi @charles_pick ,

I am not seeing any Nucleus tied to your account at all, which is likely due to the Nucleus not having been active for more than 30 days. I would second the suggestion of trying the HDMI test, we also have the following troubleshooter specifically tailored for Nucleus hardware issues:

https://account.roon.app/en/contact/nucleus-troubleshooting/

I have done all that troubleshooting up to the point of somehow connecting to the Nucleus. Nothing in that routine worked. Also, when I look at my entire network on a computer, there is no evidence of the Nucleus, either in wifi or ethernet. I guess that I could plug an HDMI into it and see what comes on the screen but what good does that do?

Hi @charles_pick,

Continuing to complete the typeform would have led you to a screen allowing you to send your Nucleus to get fixed.

It would help us diagnose the hardware failure happening to your Nucleus. Once we’ve done that we can help you with an RMA for the Nucleus.

ok, I plugged an HDMI into the Roon and it simply says Searching for network address. thats. it. And. yes, this is a good ethernet cable into a fully functional switch that is actively up on my LAN.

Hi @charles_pick,
Since the Nucleus is unable to get an IP address assigned to it we should reset the network settings on the Nucleus. You will need a USB keyboard to do this. Here are the steps.

  1. Connect the Nucleus to a monitor or TV via HDMI

  2. Connect a USB keyboard to the Nucleus

  3. Press ENTER

  4. Type resetnetwork

  5. Press ENTER

If you are still unable to see your Nucleus on the network after that it would signify a hardware issue with the Nucleus’ ethernet port. In that case you can submit an RMA through the link that @noris provided to you.