That's exactly right. Before, nearly all of the buttons on the right panel worked, but you could tell that some of them were worn out because of poor responsiveness. Absolutely none of the buttons on the left were working before the replacement, so I chalked it up to a broken connection in the plastic ribbon cable. Indeed, upon removal of the panels, the plastic tails did crumble, so I confidently and carefully installed the new panels knowing that they would resolve my issues. Unfortunately, I'm right back where I started, albeit with brilliant new membranes. All of the buttons on the right side work and none of the buttons on the left side work, just as before. It's puzzling. I have LED illumination and control via linear potentiometers on both panels, however, so I've ruled out installation error. Must be component failure on the PCB pertaining strictly to the buttons, I figure.

--- In chromapolaris@yahoogroups.com, "Paul D. DeRocco" <pderocco@...> wrote:
>
> > From: minimelisma
> >
> > In my original diagnosis, the membrane buttons on the left
> > panel of my Chroma Polaris were non-responsive to touch, so I
> > ordered and carefully installed Paul's replacement panels
> > according to the instructions at rhodeschroma.com. This
> > needed to be done, no question about it, but the left panel
> > buttons still do not work. Disappointing! I suspect the PCB
> > that controls this half may have a failed component, but
> > due.to the scarcity of replacement boards, I will have to
> > isolate and repair this issue. The mod/pitch levers are also
> > not functioning, but that may be beside the point right now. Not sure?
> >
> > Before I go through the whole board probing for voltages with
> > a multimeter, does anybody know more about this issue? Maybe
> > which components could be the likely culprit?
>
> Do none of the left panel switches work? Do all of the right panel switches
> work? If this isn't the case, it would be helpful to have an EXACT list of
> which switches don't work.
>
> --
>
> Ciao, Paul D. DeRocco
> Paul mailto:pderocco@...
>