A1 CV (unipolar) - Channel 4 no output.... (LED+CV)

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Super DAC board CH4 seems to be ok (measure changing voltages)
The Octal board seems to be soldering technical OK.

So i think it has something to do with the the Transmute 8 PCB…. looks like an multilayer pcb? not easy to follow!
On the Output-header J3 (connect to the Octal board) i measure 12V on the PIN where i followed the trace back from the octal board…. (should not be 12V - it should change, have an lfo in my program…)
(12V measured with unplugged octal-bard)

i turned the trimpot, and made solder adjustments on the parts where i thougt it has something to do with CV4…

I need a shematic to go forward.

(the rest off the Eurorack-Kit is working!)

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https://www.midiphy.com/en/shop-details/188/53/transmute8-pcb-eurorack-midiphy-seq-v4-eurorack-modular-midi-cv-interface

contains a schematic for the output stage, part numbering is sequential, so you can work out the components for channel 4. It’s a 4-layer PCB indeed.

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DONE > i did not soldered 4R49…. a mistake by leaving out the BiPolar-making-Resistors - uuups…. in the meantime i started to get into the board… but now it works - so no more work on this Picture:

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Very good! Yep, it hopefully should be logically laid out!

Best,
Andy