Okay people, so i'm no engineer/electronics wiz.
but from the label on the VCU unit.
I'd surmise that the 12v output supply maybe the issue.
as the indicators wont be 39v to 84v (id imagine).
As the bike still runs and charges, begin the only things i can think of that would be in the 39-84v region.
i'd imagine the only issue at that end is if the unit isn't getting the power it wants.
as to finding the unit for a low price or even without a 4 week wait, no luck.
as can't find original manufacturer online that not years old.
boiled down (from what i can read) its a 100w unit with 3 output voltages and an IP65 rating.
exactly what it handles is yet to be full explored in regards to finding an alternate.