Whatsminer M20S Hashboard Repair Guide


Whatsminer M20S Hashboard Repair Guide

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

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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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