Side thought, there was also this person who bought a s19 95th machine from Amazon that was sold as new but also turned out to have issues.
https://bitcointalk.org/index.php?topic=5469920.0
I wonder if a some mine just sold off a bunch of these older units and there are some Amazon sellers that are cleaning then up and selling them as new when they had actually been run hot & hard for over 2 years.

Could be a coincidence but 2 in 2 weeks, seems odd.

-Dave