Efudd - Do you know if the Z9 has the same micro on the hash board as the z9 mini? Does it use the same 4(6) phase VRM? Would you be willing to give up some of that data So I don't have to go through the same disassembly process (I was about to do this then I saw your post)?
( the 2/3 batch z9 minis are current-limiting the hash boards)