HELP: Is my RP-AX56 radio dead?

I have an Asus RP-AX56 extender that I have used for several years in my AImesh setup with an RT-AX86U router. I am running the latest 3.0.0.4.386_51891 firmware. This might be a coincidence, but the unit failed to reconnect to the Router after I reset the breaker on that outlet as part of some work at the house. The unit blinks blue, then solid red, repeat. If I connect the unit to the router via Ethernet, I can connect to it and configured it. I've tried all the things: unplug, factory reset, firmware downgrade, upgrade, etc. I have not mucked with the router yet an I am loathe to do so.

I looked at all the Reddit posts, tried a good subset of stuff.... is my radio on this thing dead?