I have and R4 and 3 PCI connectors melted into the power ports.
Would it be worthwhile to send to Bitmain, solder myself, or look for someone in the USA to do it cheap?
If you know of any services in usa familiar I'd like to know.
forget bitmain.
maybe hmtech can repair it.
https://hmtech.co/they helped me with a whatminer m20s
they are USA based.