How To Troubleshoot Antminer S19j Pro Reg CRC Error?

The full name of the Reg CRC error is Register Cyclic Redundancy Check Error. In Bitcoin mining hardware, this error typically occurs when the hardware attempts to read or write data, and the system detects a mismatch between the data and the expected value through CRC check, thereby triggering a Reg CRC error. This situation may cause the mining hardware to cease functioning completely, resulting in a loss of mining time and a potential reduction in revenue. If not resolved promptly, it may even lead to permanent hardware damage.

I. Fault Issue: During the operation of the Antminer S19J pro miner, the log reports "!!!Reg CRC error". The temperature monitoring thread will automatically exit, no longer reading the temperature data from the hash board, and the miner will stop mining.

II. Antminer S19j Pro Troubleshooting

1. Check what caused the Reg CRC error. If the software causes the problem, find the s19j pro miner background interface and click "Factory Reset" or use the "Reset" button on the control board to restore the miner to factory settings to clear potential misconfigurations and return it to its initial state (Note: This operation will clear all current settings and should be performed with caution). If the problem persists after resetting to factory defaults, it is recommended to update the software, firmware, or drivers on the mining hardware.

2. If the problem is not with the software, check all hardware connections. Ensure all cables are securely connected and there are no loose or damaged cables. Check the PSU to ensure it provides stable and sufficient power to the mining hardware.

3. If all the above steps have been tried but the error persists, it is likely due to ASIC hash anomalies. It is recommended to use the Antminer universal chip test fixture to perform a PT2 test to find the ASIC with hash anomalies and replace it.

• Insert the test fixture into the PSU 4pin voltage adjustment line, connect the 6Pin power cable, and then insert one end of the hash board cable.

• Connect the computer and the fixture with a USB to TTL cable, and power on the test fixture to let it self-check.

• Install the PT2 test file to the test fixture in advance.

• After the fixture self-check is completed, connect the red and black alligator clips to the positive and negative terminals of the hash board and power supply, and then insert the other end of the cable into the hash board. Start the test.

Example: The hash rate of a normal ASIC chip should be around 5000, but the test log indicates that the hash rate of the ASIC [061] chip is only 1092. (The chip number starts from 0), we need to replace the faulty chip No. 62, and we can choose the BM1362 series ASIC chip, which is suitable for the S19J Pro.

Through the above steps, we can effectively troubleshoot the Reg CRC error of the Antminer S19j Pro. If the problem persists, it is recommended to contact professional maintenance personnel to ensure the regular operation of the miner and prevent further damage to the hardware.