Hey
I purchased these miners used.
One of the boards is completely missing, so that would explain why Chain[0] isnt detected at all.
However 2 days ago Chain[1] was working but now its not working, from your experience, what is the most common reason for this?
I did transport the miner from one house to another, could it have broken in transport?
Did you replug the cables and the issue occur?
would you mind to try running one hashboard with a known working cable so that we can check if it just a cable issue if not then try to upgrade your firmware to the latest version. Sometimes it can fix this problem by upgrading it to the latest firmware.