ASIC Miner L7 Failures Linked to Sensor, Power, and Network Issues

Based on the provided log file, the main reasons for the failures of the ASIC miner Antminer L7 are related to several potential issues: 1. Lack of connection to the pool ('Job not found', 'stratum connection timeout', 'not responding!'): - This indicates network problems or incorrect pool settings (address, port, login). The pool server may be unavailable, or there could be network restrictions or Ethernet interface disconnections. - Incorrect stratum address configuration or internet lag could also be factors. It is necessary to double-check the connection parameters and ensure the miner connects to the correct servers. 2. Temperature reading errors ('read temp error!', 'pcb temp count 2/3', 'ineffective value count 0'): - Persistent temperature read errors suggest issues with drivers or the temperature sensors themselves, possibly poor contact, faulty sensors, or interface problems with I2C/SPI. - Lack of current temperature data prevents proper cooling adjustments, automatic fan regulation, and may interfere with dynamic voltage and frequency tuning. 3. Power module problems ('get_power_voltage_calibration_data error!', 'power reply the bad crc', 'read_back_data=0xf5'): - Frequent CRC errors when reading power data indicate possible issues with the power supply, bad contacts inside the PSU, or communication failures with FPGA/ASIC. - This could cause unstable power delivery, which is harmful to the equipment, or incorrect voltage settings, risking overheating or system failures. 4. Regular disappearance of hash rate ('low hashrate', 'no ratio hashrate', 'hashrate=0') is mainly caused by the lack of hash rate data, often due to faulty temperature sensors or monitoring and power system failures. The primary causes of the outages include ineffective or faulty temperature sensors (constant ERR 'read temp error!'), power supply issues (CRC errors, poor interactions with PSU), network disconnections to pools (frequent 'Job not found' errors), and possible improper power or overheating caused by defective sensors or cooling system issues.