ASIC Repair Basics: Antminer S9 Common Faults and Solutions

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The Antminer S9 is a popular equipment for anyone looking to get into cryptocurrency mining. It is designed with both high performance and cost-efficiency in mind, making it an ideal choice for those just getting started. Let’s take a look at the design components of this machine and how they all come together to create a powerful mining rig.

Overview of the Problem

Maintaining a chip on a PCB board is no small task and requires extensive knowledge in various technical aspects. This includes ensuring that each voltage domain is standard, as well as verifying the functionality of VDD1V8, VDD2V5 and Step-down/Boost circuits. Furthermore, troubleshooting any low calculation capacity or other anomalies to repair any issues with the chip or peripheral components must be done too. Additionally, it involves familiarity with welding techniques to avoid causing damage to the PCB board or chips during repairs. In conclusion, maintaining a chip on a PCB board requires advanced technical knowledge as well as skillful welding techniques to ensure successful maintenance of the chip on the PCB board.

Causes of Voltage Anomalies in Vdd, VDD1V8 and VDD2V5

The causes of voltage anomalies in Vdd, VDD1V8 and VDD2V5 can range from power supply fluctuations to improper functioning of step-down/boost circuits. Incorrect input voltage can cause inadequate operational power for the chip, resulting in abnormal voltages. Faulty components within the circuits responsible for regulating step-down/boost functions or a defective chip that cannot deliver the required amount of power could also be responsible for these abnormalities. Additionally, any build-up of resistance in the circuit could lead to power supply problems that result in voltage anomalies. Poor cooling conditions for the chips or insufficient ventilation machines can likewise lead to issues with operational power, thus causing abnormal voltages. Poor manufacturing techniques such as misaligned polarity or misplaced solder points can also contribute to these irregularities, and should be attended to as soon as possible for optimal performance. In addition, prolonged usage without maintenance can weaken electrical connections over time, leading to voltage irregularities caused by loose connections between components and their respective pins on the PCB board. Lastly, improper placement and connection of different components such as capacitors and resistors can cause disruptions in power delivery and increase susceptibility to voltage anomalies.

Voltage Domains

The Antminer S9 is a powerful mining rig that has revolutionized the cryptocurrency industry. It boasts four voltage domains, each made up of two BM1387 chips and two buck diodes. This means that the miner can step down voltage from 12V to 3.3V to ensure proper power levels throughout the system, making it more efficient in terms of power consumption. In addition, it also features 21 voltage domains with three BM1387 chips each, allowing for an impressive processing power up to 14 TH/s. The S9 Bitcoin ASIC miner has opened new doors for miners looking to get into cryptocurrencies and make a profit with their investments.

Measuring Potential Difference to Determine Voltage Domain Normalcy

Measuring potential differences is an important step in ensuring the normalcy of a voltage domain. It involves measuring the electrical potential between two points within a circuit and comparing it to the expected value. By doing so, any discrepancies can be quickly identified and addressed before they become significant problems. This technique also allows technicians to identify any faulty components or misaligned polarity which may be causing excessive power supply fluctuations or other voltage abnormalities. Furthermore, it can help determine if there is any build-up of resistance present in the circuits, which could lead to operational issues with chips on PCB boards. Ultimately, by correctly measuring potential differences in voltage domains, service technicians can accurately diagnose and repair issues related to abnormal voltages before they cause further damage or malfunctioning components.

Steps for Troubleshooting Low Calculation Capacity Issues

Troubleshooting low calculation capacity issues can be a challenging task for service technicians, especially when it comes to identifying the root cause of such irregularities. Low calculation capacity is often caused by faulty components, power supply fluctuations, or misaligned polarity. In order to properly address these problems and ensure optimal performance levels in mining rigs, it is important that service technicians have the right tools and knowledge of proper troubleshooting techniques. This includes measuring potential difference in voltage domains, checking for any build-up of resistance in the circuits, and examining peripheral components that may be contributing to operational problems with chips on PCB boards. By following these steps carefully, service technicians can quickly diagnose and repair any low calculation capacity issues they may encounter.

Oscillator and Clock Generation

The Antminer S9 is a powerful Bitcoin ASIC miner that offers impressive processing power of up to 14 TH/s. It features 21 voltage domains and three BM1387 chips each, as well as a 25Mhz single crystal oscillator which helps ensure uniformity of data transmission across all chips with low latency. This clock generation system is essential for the reliable performance of tasks assigned to the S9 series, such as advanced gaming, multitasking, and powerful computing applications. The importance of a steady clock in driving the entire system can’t be overstated – it keeps your experience running smoothly no matter what task you assign it to do.

How to Properly Solder BM1387 Chips

Soldering BM1387 chips is a complex task that requires knowledge of the chip’s circuitry, as well as understanding of electrical principles such as potential differences and resistance build-up. It also involves having the right tools for soldering components to PCB boards without causing any damage or malfunctioning parts. Furthermore, proper welding techniques must be used in order to avoid creating shorts and other issues with the chip or peripheral components. With all these factors considered, here are some steps service technicians can take to properly solder BM1387 chips onto PCB boards.

The BM1387 has a built-in buck diode that step-downs the voltage on its designated pin

The BM1387 is a highly advanced piece of technology that utilizes a unique built-in buck diode to step-down the voltage on its designated pin. This particular component is an essential part of the chip’s circuitry, as it helps regulate the energy levels and allows for more reliable power output. It also serves an important protective function, ensuring that devices don’t get damaged due to any unexpected fluctuations in voltage or current. The BM1387 buck diode is capable of handling up to 3A at 25V, making it perfect for a wide range of equipment. Furthermore, it can be adjusted according to specific load requirements, allowing users to access power output with greater precision and accuracy. With its impressive design features and the ability to effectively manage energy levels, the BM1387 buck diode proves itself to be a crucial component in ASIC miners like the Antminer S9 series.

Cleaning Heat Conduction Fixing Glue Around Chips When Replacing Them

Replacing chips on a PCB board is an important task for service technicians, as it can help restore performance and extend the lifespan of electronic components. However, it’s not just about removing and replacing the chip itself – there are other steps that must be taken in order to ensure proper installation. One such step is cleaning heat conduction fixing glue around the chip when replacing it. This helps prevent any damage or malfunctioning parts due to poor welding techniques or incorrect polarity connections between peripheral components. Additionally, this ensures better thermal contact between the chip and its surrounding environment which can improve overall efficiency and reduce power consumption. Properly cleaning the heat conduction fixing glue also reduces any build-up of resistance in circuits which could cause operational problems with chips on PCB boards.


D-Central provides knowledge on how to properly solder BM1387 chips and clean heat conduction fixing glue when replacing them. By providing these important tips, D-Central makes sure that customers and technicians get the best out of their ASIC miners while keeping them safe from damage due to bad soldering techniques or incorrect polarity connections with peripheral components. With its comprehensive knowledge base and excellent customer service, D-Central is quickly becoming the go-to destination for all things ASIC miners.

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Disclaimer: The information provided on this blog is for informational purposes only and should not be taken as any form of advice.

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