Antminer T21 BHB68701 hashboard basic structure and powering process

This course provides the essential foundation for understanding and repairing the Antminer T21s BHB68701 hash board. We begin with a complete overview of its physical structure and core components. The lesson details the 108 BM1368PB ASIC chips arranged in an S-curve pattern and explains the division 12 series-connected voltage domains. You will learn the complete 16V power supply input path and how it delivers about 1.2V to each domain. We also introduce key circuits LDO circuit, the EEPROM, temperature sensors, and ASIC chip signals (RST, CI, RI, CLK, BI). This is the perfect starting point for zero-based learners to build crucial knowledge before advancing to voltage measurement and fault diagnosis.

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