4mm); when replacing a whole new chip, you have to tin the chip pins and then solder for the hashboard, and then lock big warmth sinks following applying thermal gel evenly to the chip floor. If the check chip isn't completely detected, the board has to be repaired. If https://antminer-s19-pro-hashboar21864.blogspothub.com/30816591/the-greatest-guide-to-hashboard-antminer-s19