The single Antminer S19 hash board has 88 chips, but the kernel log shows Chian 2 only find 87 asic, so how should we troubleshoot the lack of chips in the hash board?
Troubleshooting:
a. The log shows "find 87 asic", which is usually caused by the lack of a certain chip, or it may be that the 88th chip is broken (this is rarely the case). Under the normal operation of the hash board, short-circuit test the CO signal at the output of a certain chip, and the test fixture will report the number of the corresponding chip.
b. Use the short-circuit test "CO" signal to check: use the dichotomy method to connect the CO of the No.44 chip to the ground (use tweezers or the needle of a fluke 15B+ multimeter to put the heat sink and the CO hole together), press the test fixture test button, if ASIC=44 is displayed, indicating that the chip in question will be between No.45-88. Continue to short-circuit test CO until the chip whose signal is interrupted is found. Find the chip whose CO signal is interrupted, and check its grounding value. If the resistance value is wrong, the chip may be pseudo soldered or damaged. (To judge whether the resistance value is abnormal, you can compare the resistance value of other chips)
Click the article below to learn more!
>>Maintenance skills: quickly find the faulty chip through the short-circuit test point "CO"
>>[19 series] Common problems and solutions for miners' kernel logs
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