Whatsminer M20 series repair course

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 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

    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

    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

    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.
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