Master System 2 adding A/V Out Continued
For Audio, we need to solder a wire to pin 15 of the Sega 315-5246 chip (the same chip as used in the 50/60Hz switch). Because we're soldering onto the underside of the motherboard, we'll need to follow the trace on the motherboard from pin 15, mmmonkey used a continuity tester to follow the trace all the way up to this point on the underside of the motherboard (see purple wire soldered to it), trim the wire so it is the same length as the RGB wires.
Finally, we'll need to solder a wire for Ground to pin 24, mmmonkey noticed that pins 24 and pin 1 were linked, pin 1 already had more solder on it, so soldered a grey wire to that.
Tape the wires down near the edge of the motherboard and so they are next to the RF Out socket.
Now replace the motherboard back into the case (make sure the lower part of the metal shielding is there), notice the wires should come up as shown in the picture, this stops them interfering with the shielding.
Now it comes to constructing the Vero Board, we'll start by soldering the capacitors in place. Study the diagram on the first page, then solder the 10uF 10v Capacitor into place as per the diagram and the following pictures. Trim the legs once soldered into place.
And then solder the 220uF 10v capacitors into place as per the diagram and the following pictures.
