Hi @Gary_Cardinale,
We’ve unfortunately reached the same conclusion as the last thread. The symptom appears to be related to the electrical environment rather than to Roon or the Nucleus hardware itself, and it’s unfortunately outside the scope of what we can troubleshoot remotely.
As others have suggested, the first step is to simplify the setup by removing any power conditioners, filters, or additional components in the power chain. Connect the system using only basic power strips and verify whether the issue still occurs. If the behavior persists even with a simplified setup, we recommend consulting a qualified electrician or local AV installer to confirm that the circuit is properly grounded and within normal operating tolerances for sensitive audio equipment.
You’re welcome to explore some of the isolation or conditioning solutions mentioned earlier in the thread, but the underlying issue is likely environmental power instability that needs to be addressed before those accessories will be effective.