Antminer L7 hash board report 0 chip fault solution

The kernel log records the operating status of the Antminer L7 miner, often helping us diagnose certain faults.

The following content deals with the fault phenomenon of the L7 reporting 0 ASIC chips on the hash board during operation. We need to analyze the fault issue and find a solution.

I. Fault phenomenon

The hash boards corresponding to Chian 0 and Chian 2 have found a complete set of 120 hash chips. However, there is an anomaly with the hash board of Chian 1, which reports 0 hash chips.

II. Fault troubleshooting and handling methods

To check if the hash board cable is faulty, we can locate the connected hash boards through the cable interfaces CH0/CH1/CH2 on the control board. The log shows that Chian1 reports a fault of 0, while the hash boards corresponding to Chian 0 and Chian 2 have no issues. Therefore, we can try swapping the cables at the hash board ends corresponding to Chian 1 and Chian 2, then power on the device to check the log.

1. After the flat cable is exchanged as shown in the figure, if the kernel log still shows that Chain 1 detects 0 chips and Chain 2 can find 120 chips, it means that the flat cable connected to the CH1 interface is abnormal. We can replace this 18-pin data flat cable.

2. If we replace the cable, the kernel log shows that Chain 2 detects 0 chips and Chain 1 detects 120 chips. At this time, it can be basically determined that the hash board connected to the CH2 interface is faulty. We need to remove the hash board and use a test fixture to troubleshoot.

It is recommended to use the following two fixtures to test the hash board.

(1) PicoBT Multifunctional Hash Board Tester

(2) Antminer universal chip fixture test fixture

Of course, if you want to understand and learn more about the repair methods and techniques for Antminer L7 hash boards, you can click here to view more details.

In the daily operation of the Antminer L7 miner, if any fault issues are detected, especially with the hash boards, they must be promptly troubleshooted to effectively avoid more serious losses with the ASIC miner.