Antminer S21 hash board repair course

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How to fix the 0 ASIC caused by an abnormal level shifter chip U2 on the S21 hashboard?

How to fix the 0 ASIC caused by an abnormal level shifter chip U2 on the S21 hashboard? How to fix the 0 ASIC caused by an abnormal level shifter chip U2 on the S21 hashboard?

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