The only problem is:
In the Miner V9 board, we do not have the power output to control apw8 and apw9 powers
If we can find it
The problem is solved
I don't pretend to know all the technical aspects of this, i also agree that with physical modification you will likely get any control board to run any hashboard, but the fact that bitmain with all the money and engineers did not take the route - simply tells me that the cost of doing so is ridiculously high, mind you that bitmain probably have a ton of those old control boards and have access to all the components at a much cheaper price than all of us, labor in china makes such a thing even more justifiable but they didn't do it, which only leads to one conclusion.