I remember when the primer2's just got available to some people there where a couple of threads with people with failing units. They got suggested to change some stuff (add a wire somewhere to re-enforce ground around or someting) to keep the unit from breaking or burning parts.
I just got my primer2 what hardware modifications to I need to do to make sure that doesn't happen? I tried searching a bit and the information seems to be scattered over a ton on threads. A single post with the known errata would probably help alot of people.