My receiver used to work perfectly for few years.
I changed the router (from apple to unifi) and strange things started to happen:

1. suddenly it disapeared from the networkand when i checked, it looked like turn off (no light)
2. when restarted (power cycle) it shows red light for 2-3 seconds and then light is off
3. i hard reseted the device and went configured device using Net-UDAP. it worked for few days and again suddenly disappeared from network.
4. when restarted same situation as in point '2'

is it dead?
why would it happen afrer router change?