Juno Chorus

[dmp]

Start with the regulator working (remover the components that connect to V) and then one by one add components until it starts failing. I'm remembering that the chorus mute section was a little weird with the current draw. That section might be the cause

 

[Midphase]

Start with the regulator working (remover the components that connect to V) and then one by one add components until it starts failing. I'm remembering that the chorus mute section was a little weird with the current draw. That section might be the cause

That is tricky unless I rebuild this entire circuit on a breadboard...not exactly the easiest thing to do. I also find it odd that the default state is that if the switch pins are not connected the chorus is working, and is the switch pins are shorted then the chorus is turned off. Seems like the other way around would make more logical sense.

I was referencing the original schematics and it seems like the switch section (minus the actual button section) are indeed part of the original circuit since I suppose the original Juno 6/60 had a chorus on/off switch. I am wondering that if I bypass that section, what should I actually bypass vs. what should I keep? Is the function of the SK30's strictly as an electrical ON/OFF switch or do they serve another function? Someone on Reddit said that they mix the wet and dry signals together, but looking at the schematic that doesn't seem to be the case at all, and rather the wet is mixed with a dry in what looks like a summing mixer right before it hits the final opamp? If so...would you recommend that I cut off the traces where I indicated with the red lines, and then run a bypass wire where I indicated with the green lines?




One of the other things I'm spotting is that if I wire the potentiometers as indicated on the schematic, they are all backwards (i.e. they operate counter-clockwise), assuming a 1,2,3 left to right pin numbering. Basically I need to reverse them in order for them to function in a proper clockwise lower to higher setting....strange.

P.S. My goal is to re-do the schematic once I've figured all of this stuff out and to get the PCB remade with a cleaner design.