Discussion about the Korg PolySix synthesizer

Ok,

Still at it with no solution yet on why my MG is working. 

I have a question in regards to the part list vs original board. R16, 39, 46 and 48 on the part list call for metal film. The two old boards that I have  are a 367 and a 367A  have carbon film at those locations. Is there a good reason why they should be changed to metal film for the new 367A's? I installed carbon film at these locations but could swap out. I have gone over every Res and Cap to check Value Polarity and continuity at this point and save those listed above and the 5 1/2 watt metal film Rs everything is to spec.

Another is what are all the IC's that have a direct influence on the MG? My guess is these:IC1, 2, 20, 21 and 32. How about IC 13-16? 

Thanks!
Daniel


> --- In PolySix@yahoogroups.com, Andrew Jury <andy@> wrote:
> >
> > Hi Daniel,
> > 
> > Have you added the track mods around R52 and R98? The Group Buy site has the
> > details (I think). Without the R52 mod the astable that drives the MG
> > circuit won¹t oscillate. The R98 mod gets the MG delay working properly.
> > Please check and let us know if you can¹t figure it out.
> > 
> > The MG LED pulse at the same frequency as the MG frequency knob is set to.
> > It should always pulse on/off at some speed, it will never be always off,
> > unless there is a problem!
> > 
> > Cheers,
> > Andy
>