Setting up new antminer s9 with new APW3++ power supplies.  About 10 of 15 have the "normal" green light stay solid and they don't connect to the internet.  Can't find them with ip scanner or through my modem client list.  Have setup a bunch of antminers over the years and have never had this issue.

Tried: different PSU, different ethernet, different switch, resetting, running for an hour+.  None of these have worked.  

Any advice?
Thanks