NomadGroup..
It is complicated repairs the hash board of bitmain .. I just received 15 machines r4 .. and a hash board was damaged .. So it is contacting them .. for the warranty. The new s9 they do not only want the hash board, but the complete unit ..
Please contact bitmain, so they can guarantee you for your bad cards ... they take about 30 days to return your repaired cards ..
I can help you .. in the irc .. I spend with the boys ... Let me know
regards
The repair is not so much money .. and includes the return shipping
Thank you danbel! I've already sent one unit back, since it was under warranty. My second unit was starting to have no hashing issues but now it seems like it's running, although it won't load the stats page but is running as I see in Kano workers. I'm sorry what does "irc" mean? I didn't really get that. Thanks again!