What i did was remove both ends of ribbon so
Slot 1 hash board 1 cable went into 2
2 went into 3
3 went into 1
If that makes Sence?
What i also did was re install firmware
Had the latest firmware anyway but once flashed miner started mining fine at 13.5th but after 2 min the board dropped same one as in pic

I did not look in the kernal log when the falut first happened but if i look now theres no errors all boards r fine