Discussion about the Korg PolySix synthesizer

Hi everyone,

I did a little searching on this topic but came up with a ton of useful but unrelated info.  So I'll ask here.

I bought a broken Polysix (aren't they all broken at some point?).

After playing with it for a while was able to coax some sounds out.  I discovered that there are four keys on the keyboard that work.  I was pleasantly surprised to discover that aside from the dead keys the synth/effects engines are fully functional. Inspecting the battery shows that the leakage doesn't appear to be too extensive, but there is a little damage.

So I'm about to undertake the battery repair but I was wondering, could the battery leak cause all those keys to stop working, or might that be a problem with key contacts?

Also, assuming I'm able to get the synth working again, will a computer-based oscilloscope work for tuning the voices?

Thank you!