Hi All,
I've noticed the last resistor in the R15 array measures 5.7k.
Could this be the culprit?
It leads to IC2.
Regards,
Tony
--- In PolySix@yahoogroups.com, Roman Sowa <modular@...> wrote:
>
> hi,
> maybe one of the data lines in memory chip is pulled high by some solder
> joint or simply damaged. I'm talking about pins 11 to 14 of IC32 (TC5514).
> The short may be also caused by destroyed IC31 which is on the ame
> lines. I used to replace them too, they were corroded that much.
>
> Check with the scope if there is full range square pulse on each of
> those 4 pins in memory chip. Or use ohmmeter if you don't have a scope
> to check if any of them shows much lower resistance to battery's (+) or
> GND. Of course in this case when it's powered off.
>
> Roman
>
> W dniu 2012-08-14 04:36, tonezone020 pisze:
> > Hi ...
> >
> > Finally got all buttons and controls working - everything seems fully functional.
> >
> > The problem is recalling patches.
> >
> > It seems that whatever parameters are edited and stored, they are recalled at a higher value.
> >
> > I'm using the original battery damaged board.
> >
> > Any clues would gratefully appreciated.
> >
> > Cheers,
> > Tony
> >
> >
> >
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