Leaving it unplugged for a little bit can get it going again (still only initializes with one ASIC, processor 7). After running for a little while (20-30 min or so), though, HW errors start increasing a bunch and eventually it stops accepting shares. If I do a java API stats when this happens it shows the ASIC frequency as 0MHz.

Almost seems like it's overheating, but temps reported in cgminer seem fine (40-41C). Might try removing the case and pointing a box fan at it just to rule overheating out.