When we see the following information in the Antminer S19 Pro log, it means that the single Antminer S19 Pro hash board does not detect the chip, or the hash board is not detected.
Troubleshooting:
a. Swap the data cable of the hash board that shows "Chain 0 only find 0 asic, will power off hash board 0" with the data cables of the other two hash boards (only the side of the hash board is replaced), first rule out the problem of the data cable and the Antminer S19 Pro control board.
b. Check whether the total voltage domain is normal. If it is abnormal, you need to use a fluke 15b+ multimeter to check whether the PIC, MOS tube, and boost circuit are abnormal.
c. To measure whether the RI signal is normal, it is generally not necessary to check next to each other. Instead, you can first find a group of RI signals of the chips on the edge of the domain from the middle domain for detection; if it is normal, we will check forward, and if it is abnormal, check backward (the transmission direction of the RI signal is from the last chip to the first chip).
d. In addition, check whether the voltage of the chip RI signal and the ground value are abnormal. If there is any abnormality, most of them are caused by the poor soldering of the chip. First, soldering twice. If it cannot be solved, replace the BM1398 chip on the hash board.
RI signal voltage detection method: The fluke 15b+ multimeter is adjusted to the DC gear, and the red and black test pens are placed on the heat sink and RI of the same domain respectively. Whether the measured RI voltage value is abnormal can be compared with the RI resistance value of other chips in the same domain.
RI signal to ground value detection method: adjust the fluke 15b+ multimeter to the diode gear, the red test pen is placed on the heat sink in the same domain, and the black test pen is detected. Whether the measured RI to ground value is abnormal can be compared with the resistance values of other chips in the same domain.
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