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  1. Topius
    July 27, 2017 @ 4:24 pm

    Hello. Did you Fix your problem ?

    I had same problem with one of my Antminer S9 sometimes 1 Board was getting 00000 Hashrate sometimes 2 boards stopped. First I thought it was power unit changed it but after a while same problem then while trying to fix miners i touched Metal Frame(Rig where miners stand) and a PSU and felt small electric current going threw me after what all miners that was standing on that metal rig wend 00000 hash rate.


    I Put all miners and power supply on a small plastic corrners covers with 2mm height so they do not touch metal nor miners Nor Power Supply. Since then I never had any problem like that Hope this helps with this kind of problems Good luck 🙂


  2. oscrack
    August 24, 2017 @ 11:49 am

    hello when you send for repair, you mean send them to china? or do bitmain has a center in the US where they repair the hashing board, plus how long are they under warranty?



    • Rolf
      August 28, 2017 @ 12:52 pm

      180 days warranty, after that each repair is about $50-$100.

      Bitmain just added a repair facility in California, and it works ok so far.


  3. t9
    July 14, 2018 @ 9:47 pm

    think my t9+ auto restarted on its own possible?


  4. psp
    July 21, 2018 @ 9:05 pm

    you can just embed an auto restart on the device itself without too much work so that you don’t have to use a separate device to trigger a reboot:

    #ssh onto the device
    > ssh root@nullxx.xx.xx.xx
    #modify the bmminer’s autorun file to include a reboot
    >vi /etc/init.d/
    (@ line 44)
    killall -9 bmminer || true
    /sbin/shutdown -r -f +1440 “daily reboot” & #this is the key line
    /usr/bin/bmminer –fixed-freq –no-pre-heat –version-file /usr/bin/compile_time –api-listen –default-config /config/bmminer.conf &

    #save vi file w/ escape + wq

    at next reboot, the miner will automatically schedule a reboot after 1440 minutes before it begins to mine.

    i’ve just started doing this on my miners and see no ill effects on S9s running firmware from 2017050318838 (Antminer-S9-all-201705031838-650M-user-Update2UBI-NF.tar.gz)

    tip btc if you want: 33Gsp5BXoRJWtfMmQzao1P2XQaHMcezFSa


  5. el meister
    November 3, 2018 @ 11:11 pm

    Why not reboot the s9 when it drops hashrate or stops hashing instead??

    Here is a shell script that checks every 10 minutes and does that.


  6. Leandro
    January 13, 2019 @ 9:14 pm

    hola! está solucionado el problema? puedo hacer para usted un pequeño programa que reinicie los antminer S9 en los horarios que usted necesite. Mi email .


    March 26, 2021 @ 3:29 pm

    You can also use AntGuardian which is Libre and Open Source which means it is auditable by other users and therefore a much better and safer solution. It runs on Windows Mac an Linux

    There is a video tutorial on that link


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