Thanks for reaching out — let's see what's going on.
A few questions: was your device already in this state when you first discovered it? If not, were you in the middle of interacting with the device when it happened? If so, what were you trying to do? Also, did you unplug the device or was there a power outage shortly before you discovered this issue?
Give these steps a try:
Let us know how it goes.
The device was active and I had a recipe up on the device. It was working great as usual and then-boom sudden black screen? There was no power outage and my other google devices and my JBL hub are all working fine. So was not an internet issue.
The device with the black screen, can you still speak to it and get a response? If so and you just have a black screen but the verbal functions still work it could be a display failure. When you did the multiple reboots did you hear the start up sounds?
Sounds like you do have a dead unit - for the sake of argument did you try and plug it into a different electrical outlet, and does the outlet you were using have power? Could the wall outlet have failed or circuit breaker have tripped?