I have a VXI chassis with a MXI2-Express controller card (VXI-8360T) and sometimes, with a certain card installed, it will sometimes fail power-up with the "CB-TRIP" LED turning red right away. It seems to happen in streaks. If it passes, it will usually pass many times and show no issues. If it fails, it will continue to fail. The only thing that seems to restore it is leaving it alone for quite a while, but not always. What exactly is this failure? The User's Manual is very vague. Why would there be a circuit breaker on this card for the 5v line? How does it even know how much current other cards are drawing from the mainframe? What are the conditions that would cause it to fail and can these be modified at all?
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