@wklie, thanks for being always available and helping us out with trouble shooting.
Can you help me with this situation? My Lumin D2 just went dead. The RJ45 network are on, but it doesn´t wake up, or apear in Roon and Lumin App. Front pannel is off. I connect it to a Mitrastar G3P 2731 Router. I did the whole process 4 times at least. Power down modem, Lumin, Lumin App and devices with Roon. Started turning on the Router, the Roon Core, then the Lumin D2, then other devices. I tried this power cycle at least 5 times. No signal from my beloved Lumin D2. It can´t be found on Lumin app4.1.0, or Roon 1.8 Build 814. Any idea of what´s going on? Many thanks!