Hello
I buyed a another cartridge converter but i wanna mod to work expansion audio but i have a problem
Where i must soldeing to work
(http://i66.tinypic.com/rwunsy.jpg)
I Ask because i must put NES Cartridge back to label to work and i don't know where i must put the resistors
72 pin carts generally don't have expansion audio. pins 45/46 are the audio in/out pins on the converter, which i think would be on the back side of your pictured board. I'd expect those are already bridged. otherwise i don't think you'd get any audio out of the famicom.