Vintage Synth Repair

Hi Moe
have you tried the diagnostics?

Press and hold VOICE
Press and hold BANK D
Press 8

All the best
Royce

--- In vintagesynthrepair@yahoogroups.com, "m.sislack" <m.sislack@...> wrote:
>
> Hi Paul, 
> 
> thanks for your quick reply. The CR2032 has already been changed, all parts, boards, ics and cables i have dis- and then reassembled and reseated, I also replaced all of the electrolytc capacitors on the mainboard, but the problem still persists...
> 
> regards  moe
> 
> --- In vintagesynthrepair@yahoogroups.com, Paul Krull <paul.krull@> wrote:
> >
> > Â You may need to replace the CR2032 batteries and reinitialize the SY77. A cable or chip could be unseated too.
> > Â  Â Thanks
> > 
> > 
> > ________________________________
> >  From: m.sislack <m.sislack@>
> > To: vintagesynthrepair@yahoogroups.com 
> > Sent: Sunday, June 9, 2013 8:27 AM
> > Subject: [vintagesynthrepair] YAMAHA SY77 freezes
> >  
> > 
> > 
> > Â  
> > Hello everybody,
> > 
> > I´m trying to repair an SY77, that when I got it was stuck in untility-mode. It freezes when one of the "mode"-buttons is pressed, so I cannot even enter the test-mode. Furthermore the wheels dont´t have any effect on the sound, but send midi-data. Anyone who experienced an similar problem or could provide any suggestions?
> > 
> > best regards
> > 
> > moe
> >
>