This is a new kit that I built using HUB75 panels. It doesn't work and never has. Sent the board back to Sweden and it ran there 24/7 for days perfectly so they said before I got it back. Hooked it up again and nothing. Power supply is good, even tried a new one with no improvement. Metered the ribbon cables for continuity and they tested good. Panels are new and could possibly be bad but both doubtful. Maybe ribbons fail when being twisted into place? I do get some color dots if I plug and unplug the power. What's odd about that is the board DIP switches are set to white?