Discussion about the Korg PolySix synthesizer

On 2014-06-05 20:00, dtonthept@yahoo.com [PolySix] wrote:
> The dead voice does indeed stem from a lack of voltage from the
> appropriate pin on a 4175 so we'll need to replace that. I had a look
> on Syntaur and they don't have 4175s, indeed an ebay search turned up
> nothing as well, however they do have a 4174 flip flop - are these
> interchangeable?

Definitely not - different pinout, different number of flip-flops.  
It's a 14175 you want - it's a bit hard to see on the schematics.  This 
is a reasonably run-of-the-mill IC, not a synth special.  Try a bigger 
company like Farnell?

http://au.element14.com/on-semiconductor/mc14175bcpg/flip-flop-type-d/dp/1607714

Cheers,
A.