Well your out of warranty. There are three things you could do.....shut it down and try reconnecting all the connectors and checking to make sure it's not a bad psu causing the issue. Also swap the board connectors between board 1&2. If that doesn't help contact Bitmain and find out how much a board will cost you. Or do nothing and just let the board slowly die.
It look like its already dead since the miner is hashing at the speed of 2 boards, so i would unplug it and offer the dead board to sidehack or something. Of course do that after having verified that the board is really dead.
