With these 3 lines
2022-09-24 02:28:41 Chain[2]: find 3 asic, times 0
2022-09-24 02:28:43 Chain[2]: find 3 asic, times 1
2022-09-24 02:28:45 Chain[2]: find 3 asic, times 2
The software insists that it can still see Chain[2] and that chain 2 has missing chips, so until the line goes away, it will be hard to troubleshoot any further, can you try to swap the data cables between the hashboards and see if this part of the kernel changes?
Also, please use code tag when posting kernel log.
Thanks - I swapped cables / hashboards from another XP on Chain 2 (one of the 3 hashboards) and it cleared the error.
I have another one with the same error on Chain 0 so I know what to do now.
I will need to send these hashboards off for testing / repair but at least I have a whole rig running. Thanks for the suggestion!