I just recieved two used S7 and two new APW3++-12-1600-A3 PSU's. Connected all the connectors to the miners and plugged it in. Fan on the PSU comes on, but the miner does nothing. These are my first miners and not sure where to begin to troubleshoot.
Line Voltage tested and is 247 volts
Breaker in main box is on
One question I do have, does it matter where the connectors go on the miner from the PSU?