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Showing posts with the label Repair guide
 How to check and replace miner fan and Power supply fan? Miner fan or PSU fan is almost the most vulnerable component because of the continuous work of miners. High-strength and high-speed working methods can easily cause damage to its bearings and internal coils. When the fan is damaged, the miner or PSU will lose heat dissipation and cannot work or damage the chip. Therefore, regular inspection and replacement of bad fans is an essential job of maintaining miners. Both ASIC miners and GPU miners use a large number of cooling fans. Depending on the device model, the fan specifications used are also different. Normally, the most common fan sizes are: 4cm, 6cm, 12cm, 14cm. The standard voltage is 12V, the current is 0.27A to 7.2A, and the power cord is 2 to 6 pins. The specific size of the fan to be selected needs to be determined according to the device. When these fans fail, it isn't easy to detect from the appearance because one piece of equipment is equipped with 2 to 4 fans. W
How to Choose A Suitable Replacement for the Bitcoin Mining Rig Chip? Since the birth of cryptocurrency, people have begun to use all kinds of equipment to mine, from the simple preference at the beginning to the later profit, and use it as a profession. From desktop computers, laptops, tablets, mobile phones, GPUs to professional ASIC miners, people have been trying more efficient mining methods. Finally, GPU miners and ASIC miners have become the main tools for mining cryptocurrencies with highly high hash rates and energy consumption ratios. Among them, ASIC miners have a share of about 70%. It is a huge market, including manufacturers, sellers, miners, and maintenance personnel. The ASIC miner concentrates a large number of ASIC chips on a circuit board. Its name is "Hash Board." Depending on the model, a hash Board will load dozens of ASIC chips. They are similar to those of a computer. The CPU is responsible for calculating the hash value in the blockchain. A mining mac
How to Use Tools to Repair the Hash Board? At present, there are practitioners engaged in cryptocurrency mining all over the world, including large farms, scattered individuals, and team-based farms. In all mining forms, ASIC miners account for a large proportion. ASIC miners will generate high temperatures during long-term operation, while ASIC chips will gradually age in high-temperature environments, reduce performance, and fail to start. At this time, we must replace the damaged chip in the hash board. Usually, there are dozens of ASIC chips in a hash board, and only 1-2, or 2-3 of them may be damaged. Then, how to accurately find these damaged chips has become a common problem encountered by repairers. In 2017, people almost all used oscilloscopes to find these bad chips, but for beginners, the use of oscilloscopes undoubtedly increased the difficulty of learning to repair. Because of this, the miner manufacturer has developed a professional Hash board testing equipment: test fixt
How to Use Antminer BM1387 Tin Tool to Replace Damaged Chips? In the repair work of the h ash board, the most common problem is to replace the ASIC chip, which  is the most easily damaged part of the h ash board. In this article, I will use A ntminer as an example to show my friends how to use Antminer BM1387  tin tools to replace damaged chips?  Although there are many chip models, most of the pin positions and sizes are the same. ASIC chips are usually small in size and the pins are arranged closely, which brings great difficulty to maintenance and replacement. Because when replacing a new ASIC chip, it is necessary to accurately apply solder paste on each tiny pin, then heat it to melt, and finally fix it on the h ash board. For how to solve this problem, after various attempts, we finally chose a convenient and efficient way: making professional tin tools (ASIC tin tools). Its principle is to fix the chip on the base, then use a special steel mesh to align the pins of the chip, and

Antminer APW9 and APW9+ Power Supply Repair Guide

Antminer APW9 and APW9+ Power Supply Repair Guide Apw9 Apw9+ is a high-power PSU with 2 single-phase AC inputs and 2   DC outputs. 1: 14.5v-21v voltage adjustable output, maximum current 170A 2: 12v voltage fixed output, maximum current 12A The circuit board layout is mainly divided into: 1A - The first AC input and EMI circuit 1B - PFC and MOS circuit 1C - 12V auxiliary circuit and VCC circuit 2A -  2nd AC input and EMI circuit 2B - PFC and MOS circuit 2C - 12V auxiliary circuit and VCC circuit 2D - 12V output port and PIC communication port   The vulnerable parts of PSU are: fuse, MOS, rectifier bridge A more detailed circuit diagram is provided in the document for  Reference See more details here  Antminer manuals and repair guide

How to repair ASIC miner hash board

How to repair ASIC miner hash board Important parts of ASIC miners – Hash board One  ASIC miner consists of 3 to 5 Hash board, a control board, a casing, and software, among which the Hash board are easiest  to broken. because the ASIC bitcoin miner hash board consists of many serially connected ASIC chips. When they work, they will be in a high-temperature environment for a long time. In this environment, it is easy to burn the chip or scatter the solder due to high temperature which makes the hash board or the mining machine unable to work and no hash rate. How to quickly detective which chips broken it’s the most important when we repairing ASIC miners The Antminer chips fixture fast efficient and easy to use Bitmain Antminer repair inspection tool The ASIC bitcoin miner hash board consists of many serially connected ASIC chips. When they work, they will be in a high-temperature environment for a long time. In this environment, it is easy to burn the chip or scatter the solder du

How to repair antminer T17 Hashboard and repair guide manual download

How to repair antminer T17 Hashboard and repair guide manual download This version contains the basic circuit schematic diagram and chip signal direction and voltage introduction We currently publish in Chinese and the English version will be released soon Basic overview: Antminer T17 single hash board uses a total of 30 hash chips, the model is "BM1397", and the signal direction is sequentially transmitted from U1 to U30. Signal direction: "CLK / CO / BO / RST", transferred from U1 to U30, "RI" is transferred from U30 to U1 It also passes 5 test points for testing and maintenance The five test points are: CLK-CO-RI-BO-RST (Please note: The location of the test points in different voltage domains are also different, please refer to the picture notes) For notes and instructions on the test points, please see the following articles: The whole board has 30 chips, divided into 10 voltage domains, and each voltage domain contains 3 chips For the description of