I have had problems getting my 7" card to work. It turned out to be a cracked solder joint on the IBM 5x86-100 CPU. It got a hard knock or something since the pins of the QFP-CPU are stressed on the bottom, tilted on the sides and compressed on the upper side.
I reflowed all pins of the CPU and added heatsinks to all chips since they got toasty (especially the ATI Mach 64). I also had some problems with my diy Y-cable that fixed themselves after i screwed the bracket into the PCI-socket.
@croissantking : If you have a spare internal connector cable (GIMO), i would really like to test it in my 8200/120.
-Jonas