Roland Juno 6 Voice repair?

I have a relatively clean Juno 6 that has sat in it’s case for quite a long time. The pots need to be cleaned, but everything seems to work other than one voice is out.

I know that this synth isn’t the same as the 60/106, regarding voice repairs, so I was looking to get some insight from someone with some experience. Where should I be snooping to determine the issue? Am I wrong that it’s possible that the oscillator may be fine but there may be an issue with the VCA for that voice?

I will search for a Service Manual, but if anyone can help me cut to the chase as to what the likely issues are, please chime in. I appreciate any help I can get.

Thank you!