LED Lights blink during power up ( assume self test) then Router goes dark no lights at all

I just want to add I did look through posts here and did not see exact symptoms in any of them. I also went through the user guide trouble shooting section which also did not discribe thie exact behavior. It mentions situations where the power light remains amber or all the LEDs remain on but not what I am seeing.. which again is on power on via any method the LEDs all blink in what looks like a normal self test start up pattern but then at the end they all go off. By all I mean there are 0 lights lit on the router.