Since it jumps right in and says "FF", I think that the only other worthwhile thing is to get the CPU tested in a friend's board (if at all possible). But it's more than likely the board:
I got my first 8KHA+, hooked everything up, pushed the button, and all I got was spinning fans and an FF on the LED (no video signal). After trying 3 vid cards, (2 AGP and one PCI); testing my ram in a friend's 8KHA+; using a spare, working processor; using a friend's working PSU; and trying another PSU from my other comp, I was unable to remove the FF signal. No matter what I tried, it seemed that the mobo was at fault.
I did a quick RMA, and I received a (it looks remanufactured because of the older bios marking) 8KHA+ with an N+ bios. I set up the mobo, pushed the button, and everything has been working well from then till now 🙂