alien0matic wrote:Yes, it is a desoldered connector. I'm lost now, seems like I've missed something important. In my understanding of your suggested pinout, you are connecting "right in" to "right out". My understanding of you pinout was: whatever I feed into "right in" comes out at "right out". In my eyes, your wiring diagram objects your pinout.
What i do is this:
I send my audio on both inputs (left and right) because most emulators do only have mono, so no use for stereo.
This is why i connect pins 2 & 5 (L and R Input).
Left out (pin 3) leads to the Speaker, so if no Headphones are plugged in, the circuit is closed and there is output to pin 3 to speaker.
If you plug in headphones, the circuit to pin 3 is opened and redirected from input to the 3,5mm headphone jack.
Right out (pin 4) is always "supplied" with audio, but if there are no headphones connected, no one cares.
So, you do get mono on both headphone earpieces with this and if not connected, mono output on speaker.
It works in my setup, so no idea why yours will not. You either did mix something up or you have a different audio jack.
Which means nintendo made 2 different ones. That would be unfortunate.
If you have the time, you could try to wire it like i did and see if it works.