Antminer L7 hash board troubleshooting about the DC control circuit

The DC control circuit of the L7 hash board mainly includes 5 MOS tubes on the front, 2 MOS tubes and a 23V boost circuit on the back. After the input voltage of the powering passes through this circuit, it outputs a DC voltage of about 15V, which is supplied to all voltage domains of the hash board. This video mainly explains the working principle of the 7 MOS tube chips in the circuit, and how to correctly measure the voltage of the DC control circuit of the L7 hash board.

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