Schaller tremelo footswitch

[dennism]

I've got a Schaller tremelo with a failed footswitch.   Thought it would be an easy fix to put a new DPDT or 3PDT in there.   But when I look inside, the footswitch seems to only have two poles with multiple wires and even an electrolytic capacitor wired to the two poles.   What gives?   Can anyone direct me to a diagram of what is going on with a two pole footswitch?   Or help me figure out how to translate that to a more standard true bypass DPDT or 3PDT switching arrangement?

[MrStab]

it's possible the switch stops the LFO or disconnects tremolo-ing from the circuit, instead of bypassing the whole thing. more consistency in sound and handy in a bygone age without fancy switches.

you could probably true bypass it by perma-connecting the things on the poles together, removing the switch, finding the inputs/outputs and soldering a 3PDT switch as-per a typical wiring diagram. but i wouldn't recommend that myself, as there might be a perceived volume change in bypass mode, due to how the LFO shapes the wave.

[dennism]

So, probably better to get a replacement SPDT and mimic the current footswitch wiring?

[duck_arse]

there is an original schaller circuit diagram, must be somewhere on the webs, cause I've got it. it shows the 'bypass' just pulls the osc out to ground, single pole single throw is what is drawn. there is a speed switch, shown with an electro nearby, single pole double throw, centre off. so now I'm confused as weel. any chance of photos of what you have?

[dennism]

My post above was in error, the footswitch is a SPST, not a SPDT.   It looks like a Carling switch in there, probably SW110P.   I think that I can just sub a new one of those in and it will all be back to normal.   The speed toggle works fine.