The PCB stays around 65 C. The chip temp will fluctuate 1, or 2 degrees, but seems to favor 85 any time I do just one board.
I have thought about doing something with the firmware and may be good to do if it could run more efficiently, or display more accurate temps.
You could also try the vnish firmware it has more features that you can use to find what chip that stuck on 85c and then you can set the frequency manually on that chip so that can still run the hashboard even if one chip is running at a lower frequency just get rid of "stuck 85c temp chip". You can check the image below to see what I pointed to
Then find the chip that is stuck in 85c chip temp and edit the frequency to lower until you get rid of the temp.
Since you don't have a test fixture to troubleshoot which chip is faulty vnish firmware can be used as an alternative to find the faulty chip.
