Top three on the left work, top one on the right works too
The bottom on the left has "dead" written on a piece of tape stuck to the case, but while trying to get the top right board working, I realised what was wrong with it..
The kernal rom AND clock generator chips are both dead.... so that board is also now working, but I won't put it in that case, as its been stepped on...
One of the board has been deemed spare parts only... unfortunately, it was also the newest board out of the lot, which also means most of the ICs aren't compatible with the older boards...