Vintage Synth Repair

Hi Nick,

hard to nail the cause without a good tool. Maybe you should consider building a cheap logic probe: http://www.swansontec.com/sprobe.html
Will certainly be helpfull.

Francois

--- In vintagesynthrepair@yahoogroups.com, Nick Bell <mckenzie126@...> wrote:
>
> Hi,
> 
> I'm working on a 707 with no midi out. I suspect Q6 which is a 603 58F - does any one know a suitable replacement & where I might source one? Could be either said transistor or IC3 which is a HD14584BP hex  schmitt trigger - again, anyone know of suitable replacement? .. or perhaps the cpu is failing somehow but I doubt it. I can't scope any of it as I cant afford one yet, so my limited skills have narrowed it down to these components.
> 
> 
> Thanks for your help
>