Vintage Synth Repair

Your description is not quite exact... I think it's you who should  
have an idea what happened :-) There's always some reason for such  
behavior.


One of them, for example, can be that if it was not in use for longer  
time period, maybe contacts are dirty or oxidized. I would reseat and  
clean all connectors as a first simple step. Focus on keyboard cables  
and connectors, I suppose there are some.


Sometimes after the long sleep it's good to leave the machine on for  
longer time - three days and nights, but keep eye on it and switch off  
again when you can't stay near it.


Daniel Forro




On Jul 3, 2016, at 1:01 AM, roberflas@... [vintagesynthrepair]  
wrote:


> Hello,
> I have a CZ1 , that was my first synthesizer , but one day I turn it  
> on and if you touch any key , it sounds a very high note and hold  
> on , if you play more keys it adds up but with high notes. If you  
> play MIDI , all is correct, all notes , program change , etc.
> Anyone have any idea what can happen ?.
> Thank you