Power Off. Unplug every plug but the one on the top left (24v & 20v power inputs). Power on. If all your LEDs stay on, you're out of luck, it's just a bad board.
If on power-up only a few LED's come on, plug in the rest of the plugs one by one, and you should be able to see which set is screwing you up. Very likely your board is just toast, but sometimes a short or something in the relay board or other connections is screwing things up.