the disk card has bubbling on the PCB near the DISK 2 Connection.  When the disk 2 is connected the computer will not start.   When I have just disk 1 connected the computer starts up and says apple ][ but doesnt have a cursor blinking.  I think the DISK card is completely done. So I dont think I can test any further at the moment, but at least the PSU and motherboard are working..   I have no experience setting up/installing anything on an Apple ][ so this is a new journey for me...