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In 2020, with the release of the M30 series, MicroBT brought its most efficient model to the market to date. However, when the mining machine runs 24/7 for a long time, there will be common faults such as temperature sensor chip failure, hash board failure, and insufficient power supply of the chip. So how to properly troubleshoot and solve these faults? Whatsminer maintenance courses mainly include theoretical knowledge of hash board maintenance and troubleshooting ideas and demonstrations. We can keep miners up and running and profi if we properly troubleshoot and resolve these failures.
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Whatsminer M30 hash board repair training course
The Whatsminer M30 hash board is composed of 123 KF1930 ASIC chips, with a total of 41 voltage domains, and each domain is in the series relationship. The core power supply of the ASIC chip is composed of domain voltage, LDO 1.8V and 0.8V, and each chip has 5 signals. Once the powering and signal transmission of the chip are abnormal, the hashboard will not be able to operate normally. This video mainly explains the basic knowledge of the M30 hash board from its structure, powering process and signal transmission direction. -
How to measure voltages associated with Whatsminer M30 hash board?
When repairing the Whatsminer M30 hash board, it is very important whether the voltage is normal. This video will mainly explain how to measure several important voltages on the hash board, such as power input voltage, boost output voltage, voltage of level conversion chip UC3, voltage of memory chip, domain voltage, voltage of LDO powering chip, voltages of 5 signals. Any abnormal voltage may cause the hash board to malfunction. -
Whatsminer M31 hash board repair course
The input voltage of the Whatsminer M31 hash board is 13V, which is transmitted from the positive pole of voltage domain 43 to the negative pole of voltage domain 1 in turn, and then output from the negative pole. The core power supply of the ASIC chip of the M31 hash board is composed of domain voltage 0.35V, LDO 1.8V and 0.9V power supply. This video will explain in detail the powering principle and signal transmission of the M31 hash boards basic content. -
Whatsminer M31 hash board related voltage and circuit measurement method
Detecting whether these voltages are abnormal is a necessary step for repairing Whatsminer M31 hash boards. The main voltages of this hash board are: domain voltage, output voltage of boost circuit, voltage of temperature sensor chip, voltage of 5 signals, voltage of RXD signal level conversion chip, voltage of memory chip, and the voltage of the LDO chip per domain. This video will mainly explain the measurement methods of these voltages and the corresponding voltage values. -
Whatsminer M31S hash board repair tutorial
Whatsminer M31S hash board has a total of 111 ASIC chips, and every three chips form a domain, a total of 37 domains. The positive pole inputs 13V voltage, and after transmission, each domain will obtain a domain voltage of about 0.3V. In addition, each ASIC chip on the hash board has 5 signals, namely CLK, TXD, CTSI, RXD and RST signals. The correct maintenance procedure is to check the voltage first, and then check whether the signal transmission is normal. -
Whatsminer M31S hash board troubleshooting for domain and signal voltage
It is very important to find the negative pole of each domain to measure the domain voltage and signal voltage of the M31S hash board. At this time, we must know the direction of voltage transmission. The theme of this video is to explain the measurement of the relevant voltage of the Whatsminer M31S hash board and the normal working voltage value. -
Whatsminer M31S hash board troubleshooting for 17V boost circuit
The 17V boost circuit on the Whatsminer M31S hash board mainly boosts the 13V input voltage to 17V, and then supplies it to the LDO chips of the last 9 domains of the hash board. When the voltage of the LDO chip in the last 9 domains is abnormal, it may be because the 17V boost circuit is faulty. At this time, we need to check whether the components of the circuit are damaged, and if so, replace them first. -
Whatsminer M31S hash board troubleshooting for LDO powering
The LDO powering circuit is an important part of the Whatsminer M31S hash board. The circuit is mainly composed of some 5-pin chips, each chip outputs 1.8V, and then outputs 0.9V after being divided by two resistors connected in series to ground. LDO 1.8V and 0.9V are supplied to the three ASIC chips in the corresponding domain. This video mainly explains the working principle of LDO1.8V and 0.9V, and how to measure their voltage correctly. -
Whatsminer M31S hash board troubleshooting for memory chip and temp sensor chip
On the Whatsminer M31S hash board, UC4 is a memory chip, while UC2 is a temperature sensing chip. The memory chip mainly stores the barcode information of the hash board, and the temperature sensing chip collects the temperature data of the hash board and the ASIC chip, and then returns it to the control board through the IO interface, so that the control board can monitor the normal operation temperature of the hash board. -
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. -
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 M32 hash board repair tutorial
Microbt Whatsminer M32 hash board has a total of 74 ASIC chips, every 2 chips is a domain, and it has been divided 37 domains. The hash board is powered by 13V DC voltage, and the core powering of the ASIC chip is composed of domain voltage, LDO 1.8V powering and 0.8V powering. This video will explain the maintenance method of the M32 hash board from the structure of the hash board, the powering process of the hash board, and the signal voltage of the ASIC chip. -
Whatsminer M32 hash board 17V boost circuit
The 17V boost circuit of Whatsminer M32 hash board is composed of a boost chip, a boost inductor, a rectifier diode and 2 filter capacitors. Its function is to convert the 13V output from the power supply 17V, and then supply it to the LDO chips of the last 9 domains for use. If there is an anomaly here, then the last 9 months LDO chip on the M32 hash board is not working properly. -
Whatsminer M32 hash board LDO powering
On the Microbt Whatsminer M31 hash board, the LDO powering circuit is very important. Each group of its domains will correspond to an LDO 1.8V, and the 0.9V is provided by two resistors in series. 1.8V and 0.9V are both supplied to the ASIC chips in the corresponding domain. It should be noted that the powering method of the LDO chips in the last nine domains is different from other domains. This video will explain in detail the LDO powering circuit of this hash board and how to measure the correct voltage. -
Whatsminer M32 hash board about memory chip and temperature sensor chip
This video explains the two important chips on the Whatsminer M32 hash board, namely the memory chip and the temperature sensor chip. Among them, the UC4 memory chip stores the barcode information of the hash board, and the UC2 temperature sensing chip collects the temperature of the hash board and ASIC chip, and feeds it back to the control board through the IO interface to prevent the hash board from burning. Similarly, during the maintenance process, we need to master the voltage values of these two chips to determine whether there is an abnormality. -
Whatsminer M32 hash board related voltage measurement
When repairing the Whatsminer M32 hash board, we need to correctly measure the following voltage values, such as the domain voltage of each domain, the signal voltage of the ASIC chip, and the voltage of the UC3 level conversion chip. Of course, in order to measure the accurate voltage value, we need to find the negative pole of each domain according to the direction of voltage transmission. Use the hash board to practice while studying this video.
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