I moved the robot and controller, when I did that I unhooked the external IO. When I went to power back up the teach pendant wouldn't power up (I had to reinstall some jumpers... gets me every time!). I was troubleshooting that when I unhooked the wires at V1 to verify voltage. Definitely a sloppy mistake hooking them back up backwards.
The SSR's have built in reverse polarity protection. But D1-D6 burnt up when the SSR's closed providing a path to ground and in turn caused a large amp draw across the SSR's burning them up.
I got the replacement board today, I'm going to throw it in and power up. I'll ohm out the harness before I connect things up just to double check. But I'm 99% certain that reversing the polarity on V1 caused this problem.