When the Avalon 921 lacks a hash board (as shown in the figure below), miners will not be able to calculate the hash rate normally and cannot mine. When miners encounter this fault, they can refer to the following methods for troubleshooting.
According to the log, the No.3 hash board has no hash rate, and a single board test must be performed to find the fault further.
Click the article below to learn more!
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Dear Customers,
Hello, April 4, 5 and 6, 2025 (GMT+8) are the traditional Chinese festivals - Qingming Festival. Our company will suspend shipments during these 3 days and resume shipments on April 7 (GMT+8). We are deeply sorry for the inconvenience. Thank you for your understanding and support.
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
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