Hello. I bought an Antminer S7 and I am using an EVGA Supernova 1300w PSU with it. For some reason I can power up the miner but the controller board won't allow me to connect to it so I can control it. I tried connecting to the correct IP address and it would refuse my connection (it wouldn't say there isn't a connection). I tried reseting it to get rid of the static IP and now I can't even find the IP. The IP Finder thing on Bitmain doesn't work for me, nor can I find it on IP scans. Is there anything I can do now? 
I wonder why it was on static ip from the start. Well anyways, you generally go to your router's page and see which IP was attributed to the miner. Also by default the miners is on the 1.X subnet.
Look for a DHCP or a list of device connected page.