Hi LloydEmAll, I think it’s best you put in a ticket with our support team to make sure they run through all scenarios with you. – firstname.lastname@example.org
That said, did you try running the H9 from another outlet on the PP3+? You only mention swapping out cables, but how sure are you that the problem isn’t the outlet on the power supply? Have you tested the H9 by itself using the factory power adapter?