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In May 2020, Whatsminer M20 was officially released. This product continues the M1, M3, and M10 in terms of cost performance and operational stability. However, no matter how s miners are, there are times when there is a failure. It may be a hash board failure, a chip failure, or a power failure. So how do you properly troubleshoot and resolve failures? This course mainly focuses on the principle and repair of the M20 series hash board, the judgment and replacement of the ASIC chip, the CLK clock signal flow, and the RST reset signal flow, 1.8V-LDO circuit test, etc., for everyone to troubleshoot and ensure the normal operation of M20 series miners.
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Whatsminer M20S hash board repair tutorial basics
Whatsminer M20S hash board has a total of 105 KF1921 chips, the input voltage is about 13V, and the interlayer voltage is about 0.35V. The main powering of this hash board includes: PSU input voltage, booster circuit and LDO powering. The boost circuit is to boost the 13V voltage to 17V. This video mainly explains the powering process and signal transmission of Whatsminer M20S hash board. -
Whatsminer M20S hashboard main powering unit voltage measurement method
Measuring the hash board voltage is a crucial step in the repair of ASIC Whatsminer, mainly including the main powering unit, domain voltage, boost circuit, 1.8V powering and 0.8V powering. To learn Whatsminer hash board maintenance, you must be proficient in each powering unit test point is. -
Whatsminer M21S hash board repair tutorial basics
Different from the Whatsminer M20S hash board, the M21S hash board has a total of 66 ASIC chips, which are divided 33 series voltage domains, and the interlayer voltage of each domain is about 0.4V. The core powering of the M21S hashboard ASIC chips mainly includes domain voltage, 1.8V powering and 0.9V powering. The five signals of the M21S hash board are: RST, CLK, CTSI, RXD, TXD. -
Whatsminer M21S hashboard main powering unit voltage measurement method
The first step in the maintenance of Whatsminer M21S hash board is to check whether the voltage of its powering unit is normal, mainly including the main powering unit, domain voltage, boost circuit, 1.8V powering and 0.8V powering. Measuring the hash board voltage is a crucial step in repairing an ASIC miner. This lesson mainly introduces the test points for the voltage and demonstrates how to measure it. -
Whatsminer hash board single board testing reports 0 failure
Whatsminer hash board single board test has 0 ASIC chips, and the result will be displayed as "Read Chip ID: FAILED". First, it is necessary to check whether the voltage of the power supply, boost circuit and each voltage domain is normal. If the voltage of each power supply unit is normal, it needs to check whether the voltage of the signal of the ASIC chip is normal, and accurately find the faulty chip. -
Whatsminer hash board single board testing reports specific chip number failure
When performing single-board testing on Whatsminer hash boards, if the test results show that the number of chips found is less than the actual number of chips on the hash board, it means that some chips have not been identified. This kind of failure indicates that the power supply unit of the hash board is working normally, and we need to check the TXD, RXD, and CLK signal voltages of the ASIC chip. -
Whatsminer hashboard single board test shows reset failed
Whatsminer hash board reset signal failure usually has two situations: one is that the transmission of the RST at an ASIC chip is disconnected, and the other is that an ASIC chip is damaged and the reset signal is pulled high. These two situations can be judged by reset signal light. This video will explain how to troubleshoot and repair in detail.
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