Thank you everybody for your input, especially to Ken who works on so many devices and takes the time to look into this too :)
I have an update on this: quick fix or "lucky" me this time. Basically, I had the same problem a couple of hours ago where the notes of the lower octave did not work. What I did was leave it on for an extra hour and tried again and still nothing worked. I decided, lucky me, to press one/two of keys of lower octave (that did not make any sound) and move the ribbon at the same time and voila I heard a sound. So now everything works again, hopefully this will do next time this happens. Maybe the ribbon was stuck or has a glitch. A mystery!
I will update if this "fix" works next time this issue occurs.
--- In yamahacs80@yahoogroups.com, "synthparts" wrote:
>
> I have most of the IGxxxx voice chips in stock. :)
> Doug
> synthparts.com
>
> --- In yamahacs80@yahoogroups.com, David Rogoff wrote:
> >
> >
> > On Jan 9, 2013, at 8:46 AM, "Quazimodo" wrote:
> >
> > > When you say "full re-chip" David are you also including all the custom IG and YM chips?
> >
> > Nope - just the 4000 CMOS and the op-amps.
> >
> > > Where on earth would you find them all..?
> >
> > That's my problem: I've been limiting my search to earth :)
> >
>