Update
Last night s17+ turned off. Only hashing on 2 chains instead of 3 now. Emailed Core to see if I need to send it back or what to do. Will report back. I can get 50 tH out of it for the time being. Sounds like this is a common issues with the s17 series. Super frustrating.
It would be great to know how this is handled. 'After the repair' policy is something that is muddy at best, if at all.