How to fix Antminer S19XP hash board reporting 19 asic chip?

Antminer S19xp hash board that has been running for a long time suddenly does not hash, or has a low hash failure. Use the test fixture to check the hash board, and the results show that all designed ASIC chips are not found. How to properly repair the hash board to restore normal hashing? This is one of the common faults encountered by ASIC mining machine maintenance technicians. The main reason is caused by abnormal signal transmission. We need to quickly locate the ASIC chip with abnormal signal and replace it to repair the fault.

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