Canaan also doesn't work for hot climates as they only specs up to 35C. As you write the reason of death for S19s is heat it could be that Bitmain just wrote a larger number even when it causes issues.

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My experience with Whatsminers (M50 line) is that they just don't recover from curtailment in a timely manner.

As a result I have stayed away since discovering this the hard way. And yes I have tried fast boot etc in their firmware.

Can't comment on the "Pro" side of Canaan miners.



The S19K's flaw seems to pertain to expansion and contraction of the soldering between the chips when there are extreme temp changes.

Additionally the S17 heatsink design flaw fiasco was carried over to many of the S19K models which is utter crap.
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