Discussion about the Korg PolySix synthesizer

have you tried to reconnect every connector several times so any 
possible corrosion or dirt gets wiped out. A tiny bit of corrosion might 
have spread more over those years.
Looks like there's some line malfunctioning between panel boards and KLM367

Roman

W dniu 2015-05-12 o 22:37, noddyspuncture@hotmail.com [PolySix] pisze:
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> Hi folks,
>
>
> Not been on here for some time, but I though I'd pop by and see if
> anyone can advise...?
>
>
> My PolySix *had* the dreaded battery leak problem before I bought it...
> and it was fixed up professionally. And a rather good job was made of it
> by a highly regarded tech. It's been perfect for years... but now I have
> a problem with it.
>
>
> All the LED's are lit... it plays "noises" - pitched, so you can still
> hear "notes" - but non of the front panel controls in the Osc, Filter or
> Envelope sections work. The effects section controls do respond though.
> It does seem like the classic battery symptom...
>
>
> I have meticulously gone over all the usual lines that open with the
> battery thing... but they all check out OK...!
>
> I suspected the CPU but it has an output and scoping the data lines
> shows activity.
>
>
> My question is... does anyone here actually understand how the CPU and
> all the associated logic IC's work together..? It occurred to me that I
> don't really understand that theory/side of things... and I would really
> like to.
>
>
> Where can I start? Are there any books etc.. that would get me there
> relatively quickly?
>
> Is it the kind of thing that someone could "explain" to a technically
> minded person...? I do understand electronics and electronic theory in
> general but this part is baffling me.
>
>
> Cheers,
>
> Tom
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