I just plugged in a brand new S9 and it is only showing two boards.  I tried two different power supplies, one of which was formerly working perfectly on a D3.

With either psu all three green lights on the controller light up but the red light on the middle hashing board does not.

It already had the most current firmware but I tried changing to an older one - no dice.  Then I changed it back to the current one, still nothing.

I assume I need to send it in for warranty repair?  Just wanted to check and see if there was any other possible solution before I went ahead with that lengthy process..  thanks!