Haviing some s19 problems

I have a number of S19s.
About 2 months ago, one of them started showing up with an error where both the inlet and outlet temperatures are 255,255 on all the hash boards.
I tried changing out the PSU, Controller board, all of the fans and none of these worked, so I assumed it was just a bad miner. Just today, a second S19 had the same problem, so this can’t be a coincidence. Is this a Bitmain thing and is there a solution?

Anyone experiencing this too?

I have a different miner and was dealing with a different issue, but contacted official Bitmain Support and troubleshoot what my issue was. Miner was out of warranty, so they could not help with the actual repair, but were able to figure out the issue at least.