Thanks for the above info, I've ordered the bitmain test fixture to get started but still plenty to learn.
Could I check if anyone can spot anything obvious here?
I thought that you already checked these Hashboards on the test fixture? it seems this logs is directly from the unit not from the test fixture.
What I could see is the 0 ASIC with error codes.
But I noticed something weird under the fan it shows abnormal value. The faulty fan can sometimes give you 0 ASIC to all hashboard so what I would like you to try is if you have an extra s9 unit try to swap it with a known working one.