I did email PAIA the same day I posted here. I just got a reply from Scott. I've read through it and I'm going to have to print it out so that I can study it a little easier. I know how to solder and follow directions but other then that I know just enough about electronics to get me in trouble :-)
I'm posting Scott's email here because there's information in it he says isn't in the guide. maybe it'll help the next guy :-)
I'll print it out and do the tests he suggests then get back to you all and let you know how it goes.
If dressing the wiring and/or trying the alternative tuning method doesn't help, there are checks and tests that can be made and these are listed further into the guide.
Also, I've since prepared this extra information which you might find useful/insightful, but have yet to incorporate into the guide.
The absence of CV outputs (pitch cv, volume cv, and velocity cv) and the timbre control results don't necessarily point to a malfunctioning 339 or 3302 Quad Comparator IC at the IC1 designation. It is rare that this part fails or is associated with trouble. It is relatively simple in terms of ICs (ten or twelve silicon transistors or so per section. If there is trouble related to it, it is usually something like a missing ground, Vr, or V+ circuit. A jumper wire next to the marking IC1 and alongside
capacitor C40 carries the 8.2 V+ power supply voltage over to the pin 3 of the IC. The 4.1v Vr voltage which is used to bias input pins on the part is linked by a short jumper wire next to wiring point L.
The cv outputs are dependent upon the tuning of the pitch and volume sections and then when the sections are tuned to near null (audio range heterodynes) then the Pitch CV, Volume CV and Velocity CV controls must be advanced to send an amount of these voltages to the respective cv output connectors: Velocity CV is also dependent upon a significant and quickly changing Volume CV. When the pitch oscillator pair is tuned so you can hear pitch that varies as the hand moves to or from the antenna, the pitch cv should be varying over about a 0-4v dc range. The volume oscillator pair tuned to a audio/near-audio range should result in the volume cv in a similar 0-4v dc range. When the volume control is fully advanced and the Velocity CV control is advanced, the velocity cv output should vary in a similar 0-4v dc range according to the rate the volume cv changes--the faster the volume cv changes, the more the velocity cv produced. A significant velocity cv should cause a gate-trigger/s-trigger (and light this LED indicator for the triggering).
A multimeter set to measure these 0-4v range dc voltages can be connected or touched to the ground and clockwise terminals (terminal 3 as shown on figs. 3 and 4) of the cv amount controls, R82 (pitch cv amount), R83 (volume cv amount), and R84 (velocity cv amount).
As L2 is adjusted to cause the frequency of the oscillator two circuit to pass through the frequency at which the oscillator one circuit is operating, the pitch cv will increase and fall back to zero each side of null (equal frequencies for the pair of oscillators). Adjusting L3 through its range should produce similar results for the volume cv.
The audio/near-audio range of heterodyne signals from the pairs going into f-v (frequency to voltage) circuit sections must be sufficient strength to cause the IC1:A and IC1:B comparator stages to pulse or switch the 8.2 volts connected to their output pins (via R51 and R52). Each input pin of these comparators is held at 4.1v
but one of each of them has the heterodyne signal going into it.
The fluctuations of these signals should result in the input being more, or less, that the other input and the output switching/pulsing/toggling at the frequency of the het. signal.
It is possible to test the comparator operation by forcing a higher or lower voltage on the signal sensing pin while measure the
