Vintage Synth Repair

Yes, it can be a connector, or some dirtiness or oxidization inside.  
Or some of diodes on keyboard PCB are dead (usually they are used  
there) but it's not so often. Or some IC in keyboard circuit, check if  
any of them is in socket, maybe reseating can help.


Daniel Forro




On 13 May, 2014, at 9:08 AM, mpigott2@... [vintagesynthrepair]  
wrote:


>
>
> The problem is back, lowest E then next C up, then next Ab up then  
> Next E.
> Should I check the harness to the keys.  The problem went away for 4  
> months, but is back. Have to use my emergency spare JX-3P...argghhhh