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As we all know, the Avalon A8 series is an aluminum-based hash board. The maintenance method of this hash board is slightly different from other ones, but the most important thing is the welding method of ASIC chips and components on the hash board. The A8 series repair tutorial launched by ZMRC will explain the working principle of the hash board and the specific maintenance method after failure. For example, when the single board test reports 0, what is the maintenance idea? If the signal is abnormal, how should we use the oscilloscope to measure the signal? What is the method of operation when it is time to replace an ASIC chip or component? Here, youll find course video instructions for these breakdowns.
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Avalonminer A821 hash board repair tutorial
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. -
Measurement method for Avalon A821 hash board powering unit
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. -
Avalon 821 hash board troubleshooting for two common faults
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.
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