Hi,
 One of my Antminer s7 stop hashing after 2 days, everything is all fine, I have checked with different power supplies and also with different Internet connection , I have also make it hard reset few times but it doesn't hash, I can't access it through any ip on my lan not directly with any pc, once I plugged in all pins and turn it on then after red and yellow light indication it's lan lights blink only while the hashing light which is yellow blinking during hashing doesn't turn on and it's not hash nor I can access it with lan as it doesn't appear in lan! please help.