Follow the logic of your own path and results. The working OSC behaved like the others after you 're-soldered' its HF trims access to the osc core.
It therefore follows that the HF circuit is affecting the poor results.
It's designed not to have any effect until *after* the CV goes up past a couple-few octaves. Which is why you were seeing no change at the low end. <--which also means that the 'normal' Voct CV was *not* getting in.
Don't disconnect the HF, but rather have a look at the 'normal' Voct CV to the core. Both traces and parts. But traces-soldering is much more likely to be the problem.
Up above you wrote that iso alcohol was sticky. That's only true if the PCB is still dirty. It's the solder flux which is sticky.
Since solder flux is *also* a common reason to affect the resistance of low current paths -as we find often in S/H and oscs- then that will be yet another potential* clue to the source of your problem.
*See what I did there![:lol:]( "lol")
It therefore follows that the HF circuit is affecting the poor results.
It's designed not to have any effect until *after* the CV goes up past a couple-few octaves. Which is why you were seeing no change at the low end. <--which also means that the 'normal' Voct CV was *not* getting in.
Don't disconnect the HF, but rather have a look at the 'normal' Voct CV to the core. Both traces and parts. But traces-soldering is much more likely to be the problem.
Up above you wrote that iso alcohol was sticky. That's only true if the PCB is still dirty. It's the solder flux which is sticky.
Since solder flux is *also* a common reason to affect the resistance of low current paths -as we find often in S/H and oscs- then that will be yet another potential* clue to the source of your problem.
*See what I did there
Statistics: Posted by KSS — Wed Dec 18, 2024 2:14 pm