I have a spare hashing board and I tried to fire it up today as one went bad in one of my S9s. It didn't seem to work so I tried only that one hashing board (with all the others disconnected) and I get what you can see here:
https://www.dropbox.com/s/2sbe5lv6rt2p7lp/28693795_1799031853441185_1686200933_o.jpg?dl=0I tried everything I could think of (firmware update on the controller, different power supplies, restarting, resetting, just waiting and letting it run for two hours...) but nothing works. Is this a bad hashing board? Or is it possible that it's not compatible with my (newer) S9s?
The hashing board is March 2017, so it should be auto tune (it has a sticker with "L1" on it). The controller is version 1.2 from January 2018, with the latest firmware.
The red LED on the hashing board is initially on when I turn the miner on, but then it goes off and never turns on again (until I restart the miner).
