Just unboxed new tablo quad. Followed instructions. No power or blue light.
Defective Tablo or defective power supply.
Return to seller for a new one.
Yep, sounds like one of those two items is dead. You could try another 12 volt positive tip power supply, it’ll power up at 1 amp, just don’t try to run it that way for any amount of time.
Definitely give us a shout if you haven’t already!