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Bitmain's Antminer S21+ series delivers 216TH/s at 16.5J/TH efficiency, but even next-gen hardware fails. When your S21+ hashboard reports 0 ASIC chips, detects incomplete chip counts, or suffers abnormal temperature faults, downtime burns money.
Our d S21+ hash board online training video course walks you through real‑world repair procedures step by step. You will learn to diagnose common fault symptoms, identify root causes, and execute component level repairs using replacement techniques.
What you get:
- HD video demonstrations of circuit measurement and soldering
- Practical fixes for 0 ASIC, partial chip detection, and sensor failures
- 24/7 access + tutor Q&A support
- Supports repeated viewing and learning
No prior hashboard experience? No problem. Beginners and experienced technicians both benefit.
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 Tool: PicoBT test fixture
4. Auxiliary Materials: Soldering auxiliary materials kits for ASIC miner repair
5. Common Spare Materials: Antminer S21+ (plus) hashboard repair kit
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Antminer S21 plus hash board basic structure
Date: 2026-04-23 -
Antminer S21 plus hash board domain voltage working principle
Date: 2026-04-23 -
19V boost circuit on Antminer S21 plus hash board
Date: 2026-04-23 -
Antminer S21 plus hash board temperature sensing circuit repair knowledge
Date: 2026-04-23 -
Powering process of LDO circuit in Antminer S21 plus hash board
Date: 2026-04-23 -
How do the ASIC chip signals on the Antminer S21 plus hash board work?
Date: 2026-04-29 -
Troubleshooting for S21 plus hash board only detects 8 ASIC chips
Date: 2026-05-07 -
S21 plus hashboard detects 54 ASIC chips faulty repair methods
Date: 2026-05-07 -
19V boost circuit on an S21 plus hash board abnormality causing 0 ASIC found
Date: 2026-05-07 -
S21 plus hashboard detected 0 ASIC chips due to an abnormal RI signal
Date: 2026-05-13 -
How to repair the temperature sensing circuit failure on the S21 plus hashboard?
Date: 2026-05-13 -
S21 plus hashboard LDO circuit anomaly causing 0 ASICs reported
Date: 2026-05-14
China Mainland
Hong Kong
Business Hours: (GMT+8) 08:30-20:00 Mon to Sat
Company Phone: +86-023-72227777
Dear Friends,
Hello everyone, October 1-7, 2026 (GMT+8) are the National Day 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 on October 6.
Thank you for your continued support.
Best wishes,
ZEUS MINING CO., LTD.
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