How did you find the broken hashboard? Did you run them one by one? If you accidentally choose the right one without testing there is a possibility that the true culprit is the PSU.
Maybe PSU is not giving enough power to 3 hashboard so removing one hashboard can PSU provide enough power to 2 hashboard.
Why not try to run the broken hashboard without the two hashboard? To make sure that one is broken?
Hello,
The log I shared was at the start of the issue. Later on, it stopped detecting the first board showing " failed to detect all chips". That's how I decided to remove it.
But I'll remove a "healthy board" and replace the one I think is faulty. If it works, then your theory is right, maybe it was a PSU thing all along.