Yes, I believe C24 is the one, it's located right after the trasistors of the noise
generator but it input at pin 7 not 19, you should desolder the negative leg
and connect the ext audio source to the leg, solder a wire to the pcb where the
negative leg used to be, reconnect the wire to the negative leg using a switch to have
the noise signal back. You will end up with 2 wires coming from pcb at the C24 area,
a nice tip is to use a plastic strap to hold the wires together just after the cap, this
way you make it harder to the solder to get broken, just make sure you have the
terminals properlly insulated. Using a 2 pos switch you can connect the negative
leg to the middle point of the switch and use the sides for the signals as described
before.
Em 18/07/2011 10:25,
7yash < josh.nursing@... > escreveu:
It looks like C24 is the one: it the one just below the 4 yellow components on the right of the NJM2609 chip.