Discussion about the Korg PolySix synthesizer

Alexis V. Rogers wrote:
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> I verified continuity from IC35 pins, 4, 7, 14, and 13 to DO4 through 
> DO7, and from pin 5 to P25. Turning the rotary switch I get a constant 
> 0V on pins 2, 10, 1, and 11.
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> -Alex
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> 
It's conceivable that IC35 (CMOS 4042) is dead;  is there 5V at pin 16?
As long as you're checking continuity, look at the resistor network of 
R94 - 97 from the output pins;  the junction of the four resistors 
should connect to pin 6 of CN03 to the effects board.

Also, check the connections from the front panel:  the rotary switch 
requires connections to P10, 11, 12 & 13, and D03.

It's unfortunate you don't have access to a scope:  while continuity 
checking is good, viewing the test points with a scope is a much faster 
way of determining what's working correctly & what isn't.

~G


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