Antminer L7 series repair course

As a new type of mining machine for mining Litecoin, the L7 hash board is owned by more and more people. Mining machines run for a long time, followed by failures. Therefore, ZMRC now launches Antminer L7 hash board repair courses. This course mainly explains the powering process of the hash board, the structure of the hash board, the common circuits of the hash board, and the troubleshooting ideas of the hash board. After learning this course, you can repair the faulty hash board by yourself, thereby reducing the loss caused by downtime.

When running Antminer L7 is not hashing, L7 stops hashing, and the L7's avg rate is lower than the ideal rate, we should check the kernel log, then remove the faulty hash board and use a test fixture to detect and determine the fault so that we can repair it quickly.

Fault 1: chain=2 msg="ChipSetting_get_addr_LTC detect 0 chips"

Related videos:

1. Antminer L7 hash board troubleshooting about the 19V boost circuit

2. Antminer L7 hash board troubleshooting about the 23V boost circuit

3. Antminer L7 hash board troubleshooting about the DC control circuit

4. How to measure the voltages on the Antminer L7 hash board?

Fault 2: chain=2 msg="ChipSetting_get_addr_LTC detect X chips"

Related videos:

1. How to measure the voltages on the Antminer L7 hash board?

"X" can be any number less than the design number of ASIC chips on the L7 hash board.

Fault 3: chain=2 msg="read temp error! pcb temp count 3 chip temp count 3 uneffective value count 0"

Related videos:

1. Antminer L7 hash board troubleshooting about the temp sensing circuit