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This Antminer S21 hash board crash course focuses on explaining common fault symptoms, causes, troubleshooting, and repair methods through replacement. The course does not cover the working principles and will help you quickly learn how to repair hash boards. The course content is simple and easy to understand. By following the repair steps explained in the course, you should be able to resolve faults such as S21 hash boards detecting 0 ASIC chips, finding only some ASIC chips, and abnormal temperature.
Recommended Repair Equipment, Tools, and Materials:
1. Repair Equipment: Constant temperature heating platform
2. Multimeter: For measuring voltage, resistance value, and circuit continuity, etc.
3. Hashboard Testing Tools: PicoBT test fixture
4. Auxiliary Materials: Soldering auxiliary materials kits for ASIC miner repair
5. Common Spare Materials: Antminer S21 T21 hash board replacement parts kit
Attention: To learn this course, you need to master the soldering of components on this hash board. Please watch and learn from the Relevant Videos (free of charge).
China Mainland
Hong Kong
Business Hours: (GMT+8) 08:30-20:00 Mon to Sat
Company Phone: +86-023-72227777
Dear Friends,
Hello everyone, April 4, 5, and 6, 2026 (GMT+8) are the traditional Qingming Festival holidays in China. During this period, our customer support and course tutor teams may experience delays in responding to your inquiries.
We appreciate your patience and understanding. Normal response times will resume after the holiday.
Thank you for your continued support.
Best wishes,
ZEUS MINING CO., LTD.
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