I have, what appears to be a faulty hifiberry digi+.
The green power light on the board illuminates when power is applied to the 'pi.
I have tried the board on a rpi 2 and rpi+ and with picoreplayer, Max2play, Squeezeplug and the hifiberry test tone and raspbian images.
The board is not recognised as a player in any configuration, only the default outputs for the headphone are listed.
This is my third digi board, I have one connected to an old pi B and one on a new rpi2 (running Max2play/LMS/player to a dac).
I have had no previous problems with set up and configuration.
I would therefore like to return the board for your testing and, hopefully, replacement.
Please advise me with regard to the correct procedure.
I would also like to say that I have spent many hours trying to get this board working, following all the recommendations I could find within the hifiberry forum.