To answer your questions Don:
- The LFO to VCO and Pitch Bend not functioning is affecting all Voices
-The Tech said he did not fix anything
-He specifically mentioned a trace missing/pulled from the KLM-369 board, but later mentioned he noticed a bunch had been pulled.
-He said he noticed the corrosion on the back of the KLM-366B board, specifically around Voice 4, the one that is not sounding. In a closer inspection, I noticed what could be corrosion, but I am no expert.
The picture attached is an image of the KLM-366B board, notice R136.