This is caused by physical damage, there isn't much you can do to fix it if you don't have the tools and the skills needed.

Notice while the kernel log reports an issue with the temp sensor, this problem is rarely caused by an actual faulty temp sensor, it's usually caused by a bad chip on the hash board the reports the error, in your case chain 2.

Sometimes, the PSU can be the cause, to test this, unplug the other two hash boards and see if this one works, if it does not, then it's not a PSU-related issue and you will have to unplug that hash board and mine with 2 of them.

By the way, this is a very common issue with all the 17 series, at this point probably the vast majority of these miners have lost at least one hash board.