--- In cgs_synth@yahoogroups.com, sasami@... wrote:
Also tried removing the 10n between the two diodes in the CPO circuit (assuming that is what you meant)
still no go with the buttons.
I also tested the voltage levels on line A while it was still connected to main board and the voltage does go high on that line when button is pushed.
As an additional test i disconnected line A from the main board to try to rule out the CPO and the buttons still have no effect.
As i mentioned earlier in the thread this is the old style boards (non RoHS), Just wondering at this point if there is a component value that might be incorrect on all 8 stage boards.
> Check the CPO circuit. That is the only other thing that is common to allokay, i checked all the cap values and they are all good.
> the push buttons. Make sure the capacitor there really is 10n and not 100n
> or something like that. Maybe even try it without that capacitor.
>
> Ken
>
Also tried removing the 10n between the two diodes in the CPO circuit (assuming that is what you meant)
still no go with the buttons.
I also tested the voltage levels on line A while it was still connected to main board and the voltage does go high on that line when button is pushed.
As an additional test i disconnected line A from the main board to try to rule out the CPO and the buttons still have no effect.
As i mentioned earlier in the thread this is the old style boards (non RoHS), Just wondering at this point if there is a component value that might be incorrect on all 8 stage boards.