my s19 90th rig occasionally stops mining and now one of the boards is down so I only have 60th



    Dear customer.


    From the kernel log, it can't detect the hashboard. please kindly exclude the issue by following steps:


    1.Check the wires for the hashboard--pull them and re-plug them again, and also you can try to change the new wires.


    2.Please clean up the dust.

    How To Clean and Dust The Antminers


    If there are still the same problems after the above steps, please send it to repair.


    Best regards


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