I seem to be having a whale of a time with the audio end of an AV Famicom that I'm modding for someone. I installed an NESRGB for him, and the audio amp included on it stopped working (!) after soldering a wire for expansion audio. I've tried experimenting with improving the pre-existing audio circuit (since expansion audio is too loud on the AV Fami) by swapping out the resistors on the audio pins of the 2A03 with lower values. While I get balanced audio on games with external audio, on regular games I get somewhat distorted audio. Does anyone have any suggestions as to how to get rid of the distortion? If not, I can try replicating the NESRGB's audio circuitry on a separate PCB, but I would like to be able to get this working before I resort to that.
This is particularly frustrating as I've pretty much finished installing the NESRGB for my customer, and this is literally the only thing preventing me from getting the system buttoned up and shipped out.
This is particularly frustrating as I've pretty much finished installing the NESRGB for my customer, and this is literally the only thing preventing me from getting the system buttoned up and shipped out.