Hi,
I've 3 different batches of antminer s7 , they are working fine at antpool , but when I use it to mine in multi sha256 coins pools , I face hash drops then total antminer failure , I have to disconnect the electricity then reconnect it, it happens every few hours
I rented sha256 rigs then the same problem happened to the rented rigs , although I set the difficulty to 8192
I tried many things and the problem is still !!
https://i.imgur.com/yae4DEb.jpg