Avalon Repair Course

When the Avalon miner is abnormal, you can usually find out the cause of the failure and perform troubleshooting by accessing the kernel log. According to each parameter, possible faults and solutions are indicated. This lesson will take the Avalon 1166 Pro as an example to explain the meaning of the parameters in the kernel log. Understand the kernel log, you will be able to find out the cause of most failures and work effectively and efficiently.

Avalon A821 hash board is the base hash board for AvalonMiner. The A821 hash board has a total of 26 ASIC chips, and each chip is a voltage domain, and the voltage domains are connected in series. Its powering mainly includes the powering board 12V input and boost circuit powering. It is worth mentioning that the Avalon hash board has a total of 4 signals. Avalon A821 hash board repair tutorial will take you to learn more in detail.

If the Avalon A821 hash board cannot operate normally, the most important thing for us to troubleshoot is to measure whether the voltage of its powering unit is normal. For example, whether the main powering has 12V input, whether the input voltage of the LDO is about 3V, and so on. Here we will mainly demonstrate how to measure the voltage of the A821 hash board powering unit and the correct value of its voltage.

When we use the Avalon test fixture to test the A821 hash board, its serial port software will show two fault conditions. One is to display the specific number of faults, and the other is to display asic count = 0, that is, no chip has been recognized. Different faults require different methods for troubleshooting. This video course will explain the specific troubleshooting methods. The troubleshooting methods for these two faults are the same for other hash boards of the 8 series.

Avalon A921 hash board has a total of 26 ASIC chips. The hash board has the same structure as the A821. Each chip is a voltage domain, and the voltage domains are connected in series. There have domain powering, LDO powering and boost circuit powering. The maintenance of the A921 hash board is mainly to repair the powering and signals. The repair idea is to check the voltages first, and then check the signals.

AvalonMiner A921 hash board power supply unit voltage measurement. This course video explains the specific test points and corresponding voltage values of each power supply unit voltage on the Avalon A921 hash board. For example, the input voltage of the LDO is about 3.5V, the domain voltage is 0.4V, and so on.

When the tester detects the Avalon 921 hash board, the log shows 0 ASIC chip, how to repair it? First check whether the powering unit is short-circuited, and then whether the voltage of the powering unit and the core powering of the ASIC chip are normal. If all voltages are fine, the next step is to check the CLK signal with an oscilloscope. This video will explain and demonstrate the troubleshooting of the Avalon 921 hash board.

AvalonMiner A1066 hash board repair tutorial. The maintenance of the hash board is mainly to repair its powerings and signals, which means that when we repair the A1066 hash board, we first need to check whether its several powerings are normal, and then check whether its 4 signals can be transmitted normally. Avalon A1066 hash board repair tutorial will take you to learn more in detail.

As mentioned in the theoretical basis, the main powering input voltage of the A1066 hash board is 12V, the LDO output voltage is 1.8V and 0.75V, the domain voltage is 0.3V, and so on. So are the specific test points for these voltages during maintenance? The voltage measurement of the Avalon A1066 hash board powering unit will demonstrate its main voltage test points.

How to repair an Avalon A1066 hash board that finds 0 ASIC chips? First check the power supply of the main power 12V, the boost circuit 17V, and the follower circuit 2V, and whether there are short circuits. If it is normal in the powering unit, use the oscilloscope to check the CK signal of the ASIC chip. The chip with abnormal CK signal waveform needs to check its domain voltage, 1.8V and 0.75V powering to confirm, and replace the faulty chip to complete the repair.

Avalon A1047 hash board maintenance tutorial course mainly explains the its repair from the aspects of the structure of the A1047 hash board, the powering unit and its signal transmission direction. The hash board has a total of 120 ASIC chips, and its core powering includes domain voltage, LDO1.8V and 0.75V, and has 4 signals.

This video course mainly demonstrates the voltage measurement of Avalon A1047 hash board powering unit, and the corresponding voltage value of each voltages. It mainly includes, the LDO input voltage, the domain voltage, the voltage of the boost circuit and follower circuit. When the A1047 hash board fails, it is very important to troubleshoot the abnormal voltage.

This video will show you how to troubleshoot when Avalon A1047 shows ASIC Count: 0. If there is no short circuit in the main powering, boost circuit, and follower circuit of the hash board, check whether the signal transmission is abnormal. And check the domain voltage, 1.8V power supply and 0.75V powering of the ASIC chip to find out the faulty chip.