When the Antminer hash board has problems with the MOS tube being abnormal and unable to work properly, how should we repair it? In addition to replacing the 9003 MOS chip, we can also use the 9003IB integrated board for repair, which can more effectively protect the DC control circuit, ASIC chip, and LDO chip of the hash board. Reduce maintenance time and downtime. https://m.primal.net/HTiW.mp4