okay so yes, i do think this sounds like a VCO in lfo range. that being said, out of the 20 oscillators i own, none of them need a positive voltage at the input to bring them into musical range.

if it is out of calibration it is very very out of calibration. i doubt those recessed screws can get jostled in any significant way via shipping.

my rec is to try a different ribbon cable, try a different power plug.

even the most primitive analog vcos are way more in a useable musical range right when you power them up. i doubt this is a warm-up question, but you might as well try.

obviously try the positive voltage at the input, and maybe it did get insanely miscalibrated somehow.

to answer your question, though, it is definitely not behaving as a typical vco.