I tried a new set of inks with the old head. Still B200 head connection fault indicated. I took the head out and put it back. The contacts were clean but I wiped them anyway. Still same fault state.
I still have the old head.
I expect I will be able to find the logic board because the ribbon feed to the head must come from it. Any idea of how difficult it is to get at?
I doubt I can return the head, other that by saying it is faulty, as I have unpacked it from a sealed makers package and inks were loaded onto it and some ink will be inside it.