L3+ hashboard error

[fyoung55]

Hey everyone,
I have 3 good boards and one that does this in the kernel:

(none) local0.err cgminer[375]: L30: work 48 not find error

I have switched cables, psus etc.  Its definitely the hashboard, but it shows all 72 asics and they are all "o" not "x"

Any idea what's going ton or how to fix it?