This version contains the basic circuit schematic diagram and chip signal direction and voltage introduction
We are currently publishing in Chinese, the English version will be released soon
Basic overview:
Whatsminer M20S single hash board uses a total of 105 hash chips, the model is "KF1920", and the signal direction is sequentially transmitted from U1 to U105.
Signal direction: "CLK / RXD / RST/CTSI", transfer from U1 to U105, "TXD" transfer from U105 to U1
The whole board has a total of 35 voltage domains, each voltage domain contains 3 chips, a total of 105 chips
Hach board provides 5 test points for easy inspection and maintenance
They are: "CLK / TXD / CTSI / RXD / RXT"
By measuring the voltage and resistance of the test point, you can find the corresponding bad chip
click to download:Whatsminer M20S Hashboard Repair Guide
Related maintenance tools:
ZHIPU electric screwdriver set with two batteries and various screw heads
PICkit4 In-Circuit Debugger Programmer
Medium temperature solder paste
ANLIXIN-862D High Quality Desoldering Station Combination Tool
Click to see more miner maintenance tools
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Dear Customers,
Hello everyone, as China is about to usher in the Spring Festival, international logistics will be suspended. Zeus Mining is scheduled to stop shipping on January 18, 2025, and start the Spring Festival holiday from January 21 to February 4, 2025 (GMT+8). Pre-sales and after-sales service will reply to the information on February 5, 2025, and shipping will resume on February 8, 2025. Thank you for your support and trust in 2024. In 2025 and the future, we will bring better products and services to our friends.
Best wishes,
ZEUS MINING CO., LTD
China Mainland Hong Kong 
Business Hours: (GMT+8) 08:30-20:00 Mon to Sat 
Company Phone: +86-023-72227777