I have antminer S9 and the internet was disconnected for 1 hours and work again but I see one hashboard not working (the red led off)
I try do restart many time not work..
I check the board if burned or damaged but its fine and I don't see any damage .
I try connect this hashboard only but not working also .
Now I disconnect this hashboard and the others two board working good.
I've noticed when I connect and power on all hashboard ,the antminer Restart several times but two hashboard work good and the other one not working ( red led off)
how can resolve this problem ?
it is dead send it in for repair.
that happens to some boards when the internet dies off.
Sorry it happened to you.
Thanks for reply
I try upgrade or change firmware I use this file to upgrade :
https://shop.bitmain.com/files/download/s9-20160715-600M.tar.gzI wait 20 minute after upgrade but nothing happened , I do reboot again and the all 3 hashboard work for 2-3 minutes normally and Hashrate increaset to 12 TH but after that one board stop hashing ..
I think problem from firmware or control board because all hashboard can work but one of them stopped , I will try replace control board or try use another firmware , What you think ?