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Antminer maintenance courses are divided basic theoretical explanations about hash board and troubleshooting operations. It mainly includes Antminer hash board repair courses, such as Antminer S9 hash board repair course, S17 T17+ hash board repair course, S19 hash board repair training, L3+ hash board repair class, L7 hash board repair training, etc. Each video will explain in detail how to repair the hash board, as well as the troubleshooting ideas for the hash board failure. For example, the common faults of the hash board: the single board test reports 0, the test fixture cannot detect all ASIC chips, the PIC chip is abnormal, etc.
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Antminer S9 hash board basics of the structure and powering
Antminer S9 hash board repair is the main course for learning ASIC miners. How to repair Antminer S9 hash board? First, we start by learning the structure and power supply process of the S9 hash board. When the S9 hash board cannot work normally, the first step is to check whether its input voltage and DC-DC step-down circuit are abnormal. The S9 hash board repair tutorial video takes you to learn its fault diagnosis. -
Antminer S9 hash board basics for the domain powering
S9 hash board has a total of 21 domains, and each domain consists of 3 BM1387 ASIC chips. Powered by the 8.9V generated by the DC control circuit, each domain gets a domain voltage around 0.4V. This course will explain the domain powering process of the S9 hash board, how to measure the domain voltage correctly, and how to troubleshoot the domain with abnormal domain voltage? -
Antminer S9 hash board basics for the PIC chip
Why cant the S9 control board control the start and stop of the hash board? At this time, it is necessary to check whether the PIC chip is faulty. The PIC chip is a device that stores the frequency information and voltage value of the hash board, and the DC output voltage of the hash board can also be controlled through the PIC chip. This course mainly explains how to troubleshoot the PIC chip and how to correctly burn the PIC program. -
Antminer S9 hash board basics of the LDO powering circuit for the last 5 domains
Different versions of the S9 hash board will have different LDO powering circuits for the last 5 domains. The last 5 voltage domains LDO powering circuit can be divided a 14V boost circuit and a 12V power supply input voltage circuit. This tutorial video will lead you to learn the LDO 1.8V and 0.8V powering of the last 5 voltage domains of the S9 hash board and the troubleshooting ideas. -
Antminer S9 hash board basics for the 5 signals of ASIC chip
Signal abnormality is also one of the main reasons for the failure of the S9 hash board. Remember, the S9 hash board has a total of 5 signals, namely CLK, RI, CO, BO and RST. When the test result of the test fixture reports 0 and the powering is normal, it is necessary to check whether the voltages of the 5 test points are abnormal. This tutorial video will explain in detail the test points of 5 signals and their troubleshooting ideas. -
Antminer S9 hash board basics for temp sensing circuit
Antminer S9 hash board has 2 temperature senses: TEMP (PCB) and TEMP (CHIP). The normal range of the chip temperature is 65℃-125℃, if it exceeds this temperature range, the red light will flash and alarm, and it will enter the shutdown protection mode. If the temperature control circuit fails, the temperature will not be detected, and "0" will be reported in the test result of the test fixture. -
How to understand the kernel logs of antminer S9 hash board?
As professional miner maintenance personnel, if the backstage status page of the miner shows no data or cannot determine the fault, we must know how to view the kernel logs of the miner, so as to further judge the fault of the miner and perform maintenance. In this lesson, we will explain how to correctly interpret the Antminer kernel log. -
Antminer S9 hash board abnormal input voltage troubleshooting
The input voltage of the Antminer S9 hash board is 12V, which is reduced to 8.9V by the DC-DC circuit to supply power to each voltage domain. If the 12V input voltage is abnormal, the hash board will not work. What conditions will lead to abnormal power input voltage? This video will go detail and demonstrate troubleshooting. -
Antminer S9 hash board troubleshooting for the DC buck circuit
How does the DC-DC step-down circuit on the Antminer V4.2 S9 hash board work? When it breaks down, what are the maintenance ideas and methods? This lesson will mainly explain its working principle, main measurement points, and demonstration of troubleshooting methods. Only when the DC buck circuit converts the input voltage 12V to 8.9V output, the hash board can work normally. -
Antminer S9 hash board troubleshooting for PIC circuit
The PIC16F1704 chip is used to store the working information of the hash board, and the output voltage of the DC circuit can be controlled on the S9 hash board. Therefore, when the PIC chip fails, it will cause insufficient power supply to the hash board. Generally, faults caused by PIC chip can be resolved by reprogramming or replacing it with the same type of chip. -
Antminer S9 hash board troubleshooting for LDO powering circuit
The LDO powering of Antminer S9 hash board is composed of 1.8V and 0.8V powering, and 0.8V is obtained by dividing the voltage of 1.8V powering through two resistors in series. An abnormal powering of any LDO chip will cause the ASIC chip to fail to operate normally. This video will explain in detail the working principle of the LDO powering circuit, and demonstrate the measurement and repair methods. -
Antminer S9 hash board troubleshooting for boost circuit
The boost circuit on the Antminer S9 hash board is used to boost the 8.9V of the DC-DC circuit to 14V and provide LDO power for the last 5 voltage domains. The voltage of the boost circuit is higher than the normal value, which will easily cause damage to the LDO chips and ASIC chips in the last 5 voltage domains, and the hash board will not work normally. -
Antminer S9 hash board troubleshooting about temperature sensor circuit
The temperature sensing circuit consists of TEMP(CHIP) and TEMP(PCB), which are used to transmit the temperature parameters on the hash board to the control board. On the Antminer S9 hash board, the chip temperature is collected by the built-in sensor of the ASIC chip, and the PCB temperature is collected by the temperature sensing chip U89. -
Antminer S9 hash board troubleshooting for U88 CT1F level converter chip
U88 CT1F on the Antminer S9 hash board is a level conversion chip for the RI signal. The function of this chip is to convert the voltage, and convert the 3.3V voltage input by the control board through the IO interface 1.8V. All ASIC chips on the S9 hash board can be recognized by the control board only when the chip can work normally. -
Antminer S9 hash board report 0 troubleshooting
In this lesson, we will explain in detail the repair method of the Antminer S9 hash board that shows 0 ASIC chips. When the detection result of the hash board is 0 ASIC, it is first necessary to check whether the powering of the hash board is normal. If the powering is normal, check whether the RI signal is abnormal, find out the faulty voltage domain, and replace the short-circuited ASIC chip. -
Antminer T17 hash board basics about the powering process
The structure of Antminer 17 series hash board is basically the same, 17 series mainly use APW9 PSU and APW9+ power supply. This course video mainly takes the T17 hash board as an example to introduce the repair tips of the powering process of the 17 series hash board. Remember, 17 series hash board has no voltage output if only the PSU is connected, and there will have a 16V-21V voltage output only when the control board is started. -
Antminer T17 hash board basics about the 5 signals
When the powering of the hash board is normal, the ASIC chip of the T17 hash board will have signal transmission. The T17 hash board has a total of 5 signals, CLK, CO, RI, BO and RST. It should be noted that if any one of the signals is abnormal, there will be no hash rate. This tutorial video will introduce how to troubleshoot the signal fault if the T17 hash board single-board test report is 0. -
Antminer T17 hash board basics about the temperature sensing circuit
The temperature sensing circuit of Antminer T17 hash board consists of ASIC chip and temperature sensor chip. The "TMP451" displayed on the barcode on the hash board indicates that the model of the temperature sensor chip used on the board is TMP451. Thermal sensors detect the temperature of the PCB and ASIC chips. If any of the 4 temperature sensor chips are not recognized, the hash board will not function properly. -
Antminer S17+ hash board repair teaching course
Antminer S17+ hash board has a total of 65 BM1397 chips, which are divided 13 voltage domains, each domain has 5 chips, and each group of domains gets a 1.5V domain supply. when the powering is normal, there will be signal transmission. If the S17+ hash board single-board test reports 0, we need to check whether the powering unit and the signals of the ASIC chip are abnormal. The S17+ hash board repair tutorial course begins. . . -
Antminer T17e hash board maintenance course
Antminer T17e hash board has the same structure as the S17+ hash board, but the number of chips is different, so the maintenance method is roughly the same. During the repair the T17e hash board, if a signal is abnormal, first check whether the domain powering and LDO 1.8V powering are normal. If the power supply is normal, it may be that a chip in a certain domain is in poor contact or faulty. Find the faulty chip and resolder it or replace it. -
Antminer S17 S17Pro hash board repair training course
The structure of the Antminer S17 hash board is the same as that of the S17 Pro hash board, so the repair ideas of these two hash boards are the same. This video will take S17 hash board repair as an example to explain in detail the powering process and signal transimission. It should be noted that the signal test points of these two hash boards are different from other hash boards. Please check the video tutorial for details. -
Antminer S17 hash board troubleshooting for report 0
The most common failure of Antminer hash boards is found out 0 ASIC chips. In case of such failures, first of all, it is necessary to check whether the power supply of the Antminer S17 hash board is normal. If it is abnormal, it needs to find out the abnormal power supply circuit first. If it is normal, then check whether the RI signal of the ASIC chip is normal. Only when the power supply voltage and RI signal are normal, the control board can recognize all ASIC chips on the hash board. -
Antminer S17 hash board troubleshooting for report incomplete chip
There are 48 ASIC chips on the Antminer S17 hash board. If the log shows other numbers, it means that the DC circuit and boost circuit of the S17 hash board is normal, and there is a fault in the signal transmission between ASIC chips. This video will explain in detail how to repair such faults, and demonstrate the specific repair operation steps. -
Antminer S17e hash board repair training tutorial
Antminer S17e hash board is made up of 15 voltage domains in series, each 9 ASIC chips connected in parallel is a domain, and the domain voltage is about 1.2V. Each domain of the S17e hash board has 2 1.8V LDO tubes and 2 0.8V PLL tubes, which together supply power to 9 chips in each domain. For more information on the S17e hash board, please watch the Antminer S17e hash board repair tutorial video. -
Antminer S17e hash board basics about the PIC chip
This video will explain the detection method and troubleshooting of the PIC chip on the Antminer S17e hash board. The PIC chip is used to store the operation information of the Antminer S17e hash board, and the control board provides 3.3V powering. If the output of the PIC chip is abnormal, the control board will not be able to communicate with the hash board, which will cause the entire hash board to stop running. -
Antminer S17e hash board basics about the boost circuit
The boost circuit of the Antminer S17e hash board is used to boost the input voltage from 18V to 23V. If the output of the boost circuit is abnormal, first check whether the resistance values of resistors R63 and R64 are normal, and then check whether the voltage of the pins of the boost chip is abnormal. This video will demonstrate the measurement method and troubleshooting of the boost circuit of the Antminer S17e hash board. -
Antminer S17e hash board U1 and U2 chip working process
Antminer S17e hash board has 2 level conversion chips located at U1 and U2. U1 is the level conversion chip of the CI signal, and U2 is the level conversion chip of the RI signal, both of which are used to convert the 3.3V input from the control board through the IO interface 1.8V output. Only when the level conversion chip works normally, the control board can recognize the hash board and communicate normally. -
Antminer T17 plus hash board repair tutorial
Antminer T17+ Hash board repair tutorial video mainly explains its main powering, domain powering, boost circuit, LDO powering, 5 signal transmission directions and temperature sensing circuit. When we repair the ASIC miner hash board, the first step is to judge whether the power supply of the hash board is normal, then check the signal transmission, and finally check whether the temperature sensing circuit is normal. -
Antminer S19 hash board repair tutorial
Antminer S19 hash board has a total of 76 BM1398 ASIC chips and is powered by APW12 PSU. The MOS tubes on the S19 hash board is different from the 17 series. The conduction condition of these 4 MOS tubes is that their G-pole input is high level, and they will not play a role in reducing the voltage in the circuit. When the PIC chip is working normally and 3.3V is input, the four MOS tubes will be turned on. Each domain has only one LDO1.8V and PLL 0.8V, and all 0.8V is powered by the LDO1.8V of this domain. Quickly learn how to properly repair an S19 hash board with the Antminer S19 hash board repair tutorial video. -
Antminer S19 hash board DC control circuit
On the Antminer S19 hash board, the DC circuit is used to control the conduction of the circuit between the ASIC chip and the control board. When the DC circuit outputs 0V, the domain voltage cannot be provided, and the whole hash board cannot work. Master the working principle and repair ideas of the S19 hash board DC circuit, and easily complete troubleshooting. -
Antminer S19 hash board PIC chip
What is the PIC chip on the Bitmain S19 hashboard? How do PIC chips work? The PIC chip is used to store the computing frequency and related operating voltage information of the Antminer S19 hash board, and to control the communication between the DC circuit and the control board. The voltages of pin 1, pin 2, pin 9 and pin 10 of the PIC chip are all 3.3V. If the log shows that the PIC is faulty, you need to check the voltage of these pins first. If the voltage is normal, proceed to the next step of troubleshooting. -
Antminer S19 hash board 19V boost circuit
The Antminer S19 hash board consists of 38 voltage domains, among which, the LDO chips of the last 7 voltage domains are powered by booster circuits. The boost circuit of the S19 hash board boosts the input voltage from 14V to 19V output. How to troubleshoot if the boost circuit is broken? This video will explain in detail the repair ideas of the boost circuit and demonstrate how to measure the voltage. -
Antminer S19 hash board 21V boost circuit
There are two boost circuits on the Antminer S19 hash board. This video mainly explains the 21V boost circuit. How do 21 volts work? What is its maintenance idea? The 21V boost circuit on the back of the S19 hash board is mainly used to turn on the 4 MOS tubes on the front. If these 4 MOS tubes cannot work normally, there may be an abnormality in the 21V boost circuit. -
Antminer S19 hash board temperature sensing circuit
The Antminer S19 hash board has a total of 4 temperature-sensing chips, which are connected in parallel and are located on the back of the hash board. If the log shows PIC sensor NG, it means that the temperature sensing is abnormal. This lesson will mainly explain how the temperature sensing circuit works and demonstrate how to make measurements. -
Antminer S19 hash board U1 and U2 level converter chip
When repairing the Antminer S19 hash board, if the voltage of all ASIC chips is normal, but the hash board cannot be recognized by the control board, it may be that the level conversion chips at U1 and U2 are faulty. The U1 chip is used to convert the voltage of the RI signal, and the U2 chip is used to convert the voltage of the CI signal. Only when these two chips are working normally, the control board and the hash board can communicate normally. -
How to measure the voltage of 5 signals on the S19 hashboard
When troubleshooting the S19 hash board, if the powering is normal, then we need to continue to check its 5 signals. When checking the signal, it is mainly to check whether the voltage of each signal is correct. If the voltage is abnormal at a certain chip, it may be that the chip is faulty. At this time, we need to focus on checking the chip. This video mainly explains the measurement methods of 5 signal voltages. -
Antminer S19 Pro hash board repair tutorial
Antminer S19 Pro hash board has a total of 114 ASIC chips, which are composed of 38 domains in series, and each domain has 3 chips. The positive pole of the hash board inputs a voltage of about 13V, and after passing through 5 MOS tubes, it is transmitted from the last domain of the hash board to the first domain, and finally returns to the negative pole of the hash board. Each domain can be assigned a domain voltage of about 0.35V. -
Antminer S19 pro hash board main voltages and measurement method
To learn the maintenance skills of the S19 Pro hash board, we need to master several important voltages, such as the voltage of the level conversion chips, the voltage of the PIC chip, the output voltage of the DC circuit, and the voltage of 5 signals (including cross-domain signals) , the voltage of the LDO chip, etc. This video will focus on the values of these voltages and they should be measured. -
Antminer S19 Pro hash board troubleshooting for DC control circuit
Antminer S19 Pro hash board inputs about 13V voltage from the positive pole, and after passing through five N-channel MOS tubes, it still outputs 13V voltage for all voltage domains. This is the working process of the DC control circuit of the S19 Pro hash board. Of course, for this circuit to work normally, it needs to be controlled by the 3.3V voltage output by the PIC chip. -
Antminer S19 Pro hash board troubleshooting for 19V boost circuit
This video mainly explains the 19V boost circuit of the S19 Pro hash board from the schematic diagram and the actual circuit of the hash board. This circuit mainly boosts the 13V input voltage of the power supply and then outputs a voltage of about 19V to supply power to the LDO chips in the last 7 groups of domains. Notice: this boost circuit is different from other hash boards. For this circuit to have a normal output, pin 11 of the PIC chip needs to output 3.3V voltage. -
Antminer S19 Pro hash board troubleshooting for 23V boost circuit
In addition to the 19V boost circuit, the Antminer S19 Pro hash board also has another boost circuit, which is the 23V boost circuit. This circuit takes the 13V voltage input by the power supply, and outputs 23V voltage after boosting to cooperate with the DC control circuit to turn on 5 N-channel MOS tubes. We can measure the 23V voltage at the filter capacitor C60. -
Antminer S19 Pro hash board troubleshooting for temperature sensing circuit
The temperature sensing circuit of the S19 Pro hash board is composed of 4 temperature sensing chips, which are connected in series. The PIC chip will control the work of the temperature sensor chip through the 1 and 2 pin serial bus of the temperature sensor chip. When troubleshooting, it is necessary to pay attention to whether the resistors connected to the temperature sensor pin is abnormal. -
Antminer S19j Pro hash board repair tutorial
Antminer S19j Pro hash board has a total of 126 ASIC chips, and every 3 chips form a domain, a total of 42 domains. The core voltage of each ASIC chip is mainly composed of domain voltage, LDO 1.2V and 0.8V. Its input voltage is 15V. This video will explain the basics of the S19j Pro hash board from the powering process of the hash board, the structure of the hash board, and the 5 voltages of the ASIC chip. -
Antminer S19j Pro hash board troubleshooting for DC control board
The DC control circuit on the Antminer S19j Pro hash board is mainly to turn on the 15V voltage input by the power supply through five MOS transistors, and then output 15V as the domain voltage of the hash board. The circuit is mainly composed of 5 MOS tubes, Q6 and Q7 on the back and a 23V boost circuit. If the domain voltage is abnormal, we need to check whether the voltage in these places can work normally. -
Antminer S19j Pro hash board troubleshooting for 20V boost circuit
The 20V boost circuit of the S19j Pro hash board is mainly to boost the 15V input voltage of the power supply to 20V, and then supply it to the LDO chips of the last 7 domains of the hash board. Of course, whether the circuit has a 20V output is also affected by whether the PIC chip works normally. Note that when we measure the voltage of this circuit, we measure it across capacitor C69. When checking the 20V boost circuit, we need to check whether each component here is abnormal. -
Antminer S19j Pro hash board troubleshooting for 23V boost circuit
The Antminer S19j Pro hash board has a total of 2 boost circuits. In addition to the 20V boost circuit mentioned above, this video mainly explains its 23V boost circuit. The main function of this circuit is to work with the DC control circuit, which is mainly composed of diode, boost chip, boost inductor, and some capacitors. Similarly, to measure its output, we should measure whether there is 23V voltage across the capacitor C60. -
Antminer S19j Pro hash board troubleshooting for temperature sensor circuit
Antminer S19j Pro hash board has a total of 4 temperature-sensing chips, which are connected in series. This video will explain in detail the circuit structure of each temperature sensor chip, and to check if there is a fault. The voltage of pins 1, 2 and 8 of each temperature sensor chip is 3.3V. It is worth mentioning that if the temperature sensing circuit is abnormal, it may also be caused by the PIC chip not working properly. -
Antminer S19j Pro hash board training about the the LDO chips and signals voltage
When troubleshooting the Antminer S19j Pro hashboard, it is very important to measure the voltage correctly. This video will focus on explaining the LDO voltage, domain voltage, and voltage of the 5 signals on the hash board. In addition, we also need to pay attention to whether the voltages of the level conversion chips U4, U2 and U1 are normal. Only when these voltages are normal can the hash board operate normally. -
Antminer S19 plus hash board repair tutorial
Training video-Antminer S19+ hash board repair tutorial-will explain the basic knowledge of the hash board repair, including the structure of the hash board, the powering process of the hash board and the signal of the ASIC chips. There are a total of 80 ASIC chips on the Antminer S19+ hashboard, and each 8 chips is a voltage domain, which is divided 10 voltage domains. If the powering or signal transmission is abnormal, the hash board may not be fully recognized and operated. After learning this video, you can quickly master the maintenance skills for diagnosing hash board failures. -
Antminer S19 plus hash board troubleshooting for DC control board
The DC control circuit of the Antminer S19+ hash board is used to control the conduction of the MOS chips and supply the input voltage to each voltage domain. Only when the input of the DC control circuit is a high level, the 4 MOS chips can be turned on, and the hash board starts to work. If every voltage domain on the hash board is not powered, you should be troubleshooting the DC control circuit area. -
Antminer S19 plus hash board troubleshooting for 19V boost circuit
The boost circuit on the Antminer S19+ hash board is divided 19V and 22V. The function of the 19V boost circuit is to supply power to the LDO chip in the last voltage domain on the hash board. The circuit is mainly composed of a boost chip, an inductor, a rectifier diode and these filter capacitors. So how does this circuit boost the input voltage to 19V? How should the 19V boost circuit be measured during repair? This video will explain in detail. -
Antminer S19 plus hash board troubleshooting for 22V boost circuit
Antminer S19+ hash board 22V boost circuit composed of boost chip, inductor, rectifier diode and filter capacitor. It is used to cooperate with the DC control circuit to turn on the MOS tube. If the DC control circuit is normal, but the MOS tube cannot be turned on, it should be considered whether the 22V boost circuit is faulty. This video will demonstrate the circuit direction and measurement method of the 22V boost circuit. -
Antminer S19 plus hash board troubleshooting for LDO powering
There are a total of 10 voltage domains on the Antminer S19+ hash board, and the LDO power supply consists of 2 parts. Voltage domains 1 to 9 contain one LDO1.8V chip and three 0.8V chips, and the LDO powering is provided by the domain voltage; The voltage domain 10 has two 1.8V chips and two 0.8V chips, and the LDO power supply is provided by the boost circuit. This video will explain in detail the different principles of the two parts of the LDO powering. -
Antminer S19 plus hash board troubleshooting for temperature sensing circuit
If the ambient temperature or hash board temperature is too high, Antminer S19+ will stop running. This is because a temperature sensing circuit is installed on each hash board to collect the temperature parameters of the hash board in real time. There are 4 temperature sensor chips in the temp sensing circuit of S19+ the hash board, and these chips are powered and controlled by the PIC chip. This lesson will explain in detail the working principle and voltage measurement about the temp sensor circuit. -
Antminer L3 plus hash board repair training course
Antminer L3+ hash board is the hash board that miner maintenance personnel repair a lot. When troubleshooting the L3+ hash board, our idea is to first check whether the main powering, domain powering, boost circuit and LDO powering are normal, and then check whether the voltages of its 5 signals are normal, and finally check its temperature sensing circuit. This video tutorial will explain the troubleshooting principle in detail. -
Antminer L7 hash board maintenance course
Antminer L7 hash board basic knowledge course mainly focuses on the structure of the hash board, the powering process of the hashboard and the signal of the ASIC chip. The Antminer L7 hash board has a total of 120 ASIC chips, and every 5 chips is a domain, a total of 24 domains. The 14V voltage is transmitted to the positive pole of the last domain through 5 MOS tubes, and then transmitted to the negative pole of the hash board in turn. -
How to measure the voltages on the Antminer L7 hash board?
Every voltage is normal, which is the basis for the operation of the hash board. Therefore, this video mainly explains the measurement points of important voltages on the L7 hash board, as well as their specific voltage values. Such as the domain voltage, the voltage of 5 signals, the voltage of the cross-domain signal, and the voltage of the LDO chip of the last 4 domains and other domains. When repairing the L7 hash board, the first thing to do is to ensure that the voltages are normal. -
Antminer L7 hash board troubleshooting about the DC control circuit
The DC control circuit of the L7 hash board mainly includes 5 MOS tubes on the front, 2 MOS tubes and a 23V boost circuit on the back. After the input voltage of the powering passes through this circuit, it outputs a DC voltage of about 15V, which is supplied to all voltage domains of the hash board. This video mainly explains the working principle of the 7 MOS tube chips in the circuit, and how to correctly measure the voltage of the DC control circuit of the L7 hash board. -
Antminer L7 hash board troubleshooting about the 19V boost circuit
The L7 hash board has two boost circuits. This video mainly explains the 19V boost circuit. This circuit boosts the 15V input voltage of the power supply to 19V, and then supplies it to the LDO chips of the last 4 domains of the hash board. In addition, for the circuit to work normally, it needs to be controlled by the voltage output by the PIC chip. A voltage of about 19V can be measured at the filter capacitor of this circuit. -
Antminer L7 hash board troubleshooting about the 23V boost circuit
In the last video, we talked about the 19V boost circuit of the L7 hash board. The topic of this video is about the 23V boost circuit. The circuit is mainly composed of boost chip, boost inductor, rectifier diode and filter capacitor. The 15V voltage input by the PSU will output 23V voltage fter passing through the boost circuit to cooperate with the work of the DC circuit. Similarly, if a voltage of about 23V is measured at the capacitor, it means that the circuit is normal. -
Antminer L7 hash board troubleshooting about the temp sensing circuit
L7 hash board has 4 temperature sensing circuits, which are mainly composed of a temperature sensing chip and a corresponding ASIC chip. This video mainly explains the circuit structure of these four circuits, and how to measure the working voltage of the input pin and powering pin. Among them, the working principles of the 1st and 3rd circuits are the same, and the remaining 2 temperature sensing circuits are the same.
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