Repair cost is different on each case due to what is broken. If you busted the ASIC it will not be cheap. Most are in the range of $25-$250 range depend on what is broken and how many items are broken. some are getting free repair if those unfortunate ones that experienced manufactures defect be repaired with just the return shipping, however, those are very rare as most damaged hash PCB are user caused or environment related damages.
Also, if unit was aquired from bitmainwarranty.com warranty work is all performed locally in USA, Russia, Ukraine and Venezuela and some are cross shipped based on the nature of the damages. (user caused damages vs defect)
"user caused or environment related damages" are not covered under warranty, so why won't Bitmain Warranty specify to the paying customer what damages they are paying to fix? If I take my car in for repair, the repair shop tells me what the specific problem is that I am paying for. If I have a hash board that is inop and I pay you to fix it, you should be able to tell me what you fixed on it.
I also think the explanation of "user caused or environment related damages" is bullshit and Bitmain is refusing to own up to faulty equipment so that they will not be on the hook financially.
Well if I have a failed hash board I'm going to send mine to sidehack for repair service. I'm sure it will help to know what component they used for their planned obsolescence. Funny how they have been building up to selling parts. Previous miners were 100% more reliable. But they also sold it once and done. Hmmm we see where this leads. I think if we as humans try hard enough we can burn thru all our resources. Come one people it can be done! Wtf!