a-four) Check out When the pins of the main chip usually are not soldered properly (it was present in repair that the pins are tinned observing from the aspect, nevertheless the pins are certainly not stained with tin at all once the chip is eradicated) This spare part is https://antminers19hashboard54208.blog5.net/74283418/the-fact-about-hashboard-antminer-s19-that-no-one-is-suggesting