Antminer S9 hash board basics for the domain powering

S9 hash board has a total of 21 domains, and each domain consists of 3 BM1387 ASIC chips. Powered by the 8.9V generated by the DC control circuit, each domain gets a domain voltage around 0.4V. This course will explain the domain powering process of the S9 hash board, how to measure the domain voltage correctly, and how to troubleshoot the domain with abnormal domain voltage?

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