④ Detect whether the pins of the 1st chip are not soldered appropriately (you will discover tins to the pins from the facet during the repair approach, but following taking away the chip, it can be uncovered which the pins are not stained with tin); (3) Swap the one https://garrettyrixm.aioblogs.com/84852111/antminer-s19-hashboard-repair-an-overview