Antminer S19j Pro Chain 0 only find 47 asic - S19j Pro Kernel Log

When the miner reported that his log shows Chain 0 only find 47 asic, will power off hash board 0? How to troubleshoot and how solve this problem?

S19j Pro find 47 asic

Fault description:

The no.1 hash board only finds 47 asic (a total of 126 asic), and the control board will power off the No.1 hash board. As a result, the initialization of the soc fails, and finally, the miner cannot operate normally.

Solution:

First, use the jig to test the No. 1 hash board, and then use the method of shorting "CO" according to the test result, first confirm whether the number reported by the jig test is correct, and then check the CLK, RET, CO, RI, BO signals of the chip voltage. Finally, according to the test results, find the chip with abnormal signal voltage and replace it.

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