ASM-1 VCO

[tom wisdom]

Hallo folks,

after finally getting a switch and fuse holder to use with the power 
supply for the ASM-1 board that i got from the helpful and very patient 
Jim Holloway, i've started to test it (with a breadboard and a bunch of 
wire), specifically the VCO's, and there are a couple of oddities.

here's the main problem: i put a 100k log-taper pot on VCO1 (with one 
leg at +15, the other at -15, and the wiper at the first CV input) to 
start out, and i only heard a little blip when turning it. upon more 
careful turning and listening with a DMM attached, it seems the whole 
audio spectrum is encompassed by a really tiny control voltage range, 
somewhere in between 13-14V. (the rest of the house is asleep right now, 
so i can't plug it in to check it exactly ;). now, this seems like a job 
for the V/Oct trimmer, and turning it anticlockwise has helped a little, 
but i've turned it quite a bit (at least 12 turns), and the CV range is 
still less than 1V. the initial frequency trimpot just moves it over 
slightly in the CV range. is there something else i need to do?

the second problem: sometimes when i power it all up, there's some sort 
of oscillation (an actual tone; somewhere a bit below 1k?) coming from 
the PSU, a new-in-box Power One HAA15-0.8-A just purchased this month. 
pulling any of the wires from the unit out of the breadboard and 
reinserting them stops it, but it often starts again soon after. it even 
modulates in kind of a cool way if it happens when the VCO is in the 
audio range, but i don't think this is something i would like to 
continue to happen. has this happened to anyone else before? is it a 
spike in the current or voltage drawn by the board, or something in the 
AC input line? some kind of alarm?

any help will be much appreciated.

regards,
tom