Discussion about the Korg PolySix synthesizer

Measurements on and old production board. TP2 and TP3 are obscured by the
KLM396A board which must be removed.

TP2

16': -8.40
8': -11.02
4': -13.30


TP3

16': -9.93
8': -9.39
4': -2.40

TP3 with ground probe at TP4

16': +0.03
8': +0.97 (somewhat unstable occasionally more around +0.60)
4': +14.20

The last pair is a a bit of a mystery to me. Perhaps my multimeter is
freaking out.