Is there anything I can do to get these cores to work? On board 3 none of the cores work, and on board 2 about 24 out of the 192 cores seem to stay off.
I just got the miner today and when I initially started it up the hashrate climbed up to about 660/670, but later i checked and noticed it was running at about 480GH/s.
Turn it off, open it up and check that all cables are completely plugged in. Try swapping ports and cables between pairs of ASICs, see if the problem follows the move or the port. Various methods to determine if the problem is the asic, controller board, or the cable between them.