Any E-MU 0204 owners out there? Need a little help

[Groundloops]

My problem ist as follows: On a yard sale I bought a E-MU USB 0204, just the board without casing. Someone ripped off the input and output jacks.
Nonetheless it is working, at least with some headphones.

As I want to use the outputs and inputs too, I tried to figure out how to connect some new jacks, but I failed at least when it comes to that quirky combo jack thingy. All I can identify without doubt are the ground pads.

What I'm asking you for: Could please open your 0204, insert a TRS plug in each of the input and output jacks and tell me to what pads the continuities from tips and rings are? The possible candidates are as marked below:

I hope I'm not asking for too much ...

 

[richie00boy]

In the absence of people wanting to open their equipment, just look up on the Neutrik website the datasheet for the Combo Series jacks, which details the pinout.

 

[Groundloops]

That's what I already did, but obviously my 0204 had built in an older Model of combo jack, no datasheet for that ...🙁

 

[KatieandDad]

Can you not power up the board and touch a signal on what you suspect are the inputs to see if you get an output ?

 

[Groundloops]

Indeed, that's a good idea! Thanks!

And how to distinguish between the + and - signal? It has balanced inputs ...

 

[KatieandDad]

You'd need to borrow a scope for that.

 

[Groundloops]

Now I feel dumb somehow. What oxidates unused on my shelf? A thingy with many knobs, switches, jacks and a small cathode ray tube. Geez, Alzheimer's ... 🙄