Help with reproduction of a Taito MT-8 headphone pcb

[moshpit]

So, since I have literally no skills with tinkering with PCB related stuff, I was wondering if there's anyone on the forums, that can help me out, to get a reproduction of this headphone pcb going and have an idea or a ballpark number how expensive this is going to be, if a run of only 10 (more MT-8s don't seem to exist and I assume the amount of people that own a Top Landing Upright cabinet are vanishingly small) is made.

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[cools]

Is it actually an amp or does it drop the signal level?

(missing) second connector for volume control?

Does it switch off the speakers when headphones are plugged?

[moshpit]

You are right, it's not an amp it's a pcb that outputs the volume to headphone level (renamed accordingly). but on the three pin connector you connect a potentiometer to adjust the headphone volume.

I don't know if it does. Since my pcb is broken. But @voyou1 has an identical one running in his cab and it doesn't seem to cut off the cab speakers.

[geotrig]

@moshpit yeah I'm in need of one and been meaning to try and tackle but same as you have no skills or knowledge of making pcb stuff especially filtering off and amping stuff etc. I've made various attempts at starting and even remember using chatgtp to mock up specs for this but didnt save it and no idea if it was right !

Now I didn't have a full pcb either and it seems to have broken at the same point as yours but I was only left with the "jack part" ! the one thing that i vaguely remembering from mocking up something ,tracing wires or from talking to someone maybe is releasing that it didnt kill volume to the speakers , i think i bought one of those cheap headphone amp things and connected it at one point to see if i could reference.

I'm still confused on the setup of this as where does the volume in and pot connection go ?

[moshpit]

The volume-in connector (2-pins) is missing from my pcb - there's a 2-pin male connector on the control harness. It's CN-X. The 3-pin connector is the connection to the potentiometer. Then all that's left is the resistor, the transformer and the headphone jack. EASY (if you know anything about making PCBs )

[Pete]

Sounds like a job for some of the AP guys they have skills over there.

[moshpit]

That's actually a good idea! Thanks @Pete !

[Pete]

Did you see someone made a repo jvs i/o board amongst other great things.