Eventually go round to checking the other 2x and still the same problem even after factory reset.
Unfortunately you can't view logs like the antminer stuff but looking at the board temperatures it's pretty obvious that only 1x board is hashing.
One board is at 50 degrees whereas the other two are only at 20 degrees Celsius.

Without any technical support it's going to be difficult but I think I will open them up just to be sure there's no obvious faults or damage.