Alexis V. Rogers wrote:
>
>
>
>
> -
> 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.
>
> -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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