Bitmain Antminer 19 series has attracted a lot of attention as a new miner with high hashrate and low power consumption in recent years, and most mining farms also have a large number of 19 series miners. As a newly launched miner, its maintenance guidance and skills are very vacant. If the miner is damaged, it will be sent back to the original factory for repair, which will delay time and reduce revenue. Therefore, many countries and regions need Antminer 19 series miner repair masters. ASIC miner repair courses will be explained in detail: Why does the Antminer S19 repeatedly start and stop? Why is the hashrate of the S19 hash board low or only 0? And ZMRC will continue to the solutions to the new faults of the 19 series miners.