Need help for my DIY vco

[tomb]

Hi everyone, hope you doing well.
Just wondering if someone could help me figuring out what’s wrong with my stripboard circuit.
There is no sound coming out from my monitors, i’m plugged into my audio interface (SSL 2+) via Jack and all i have is a buzzzz sound… The potentiometer does nothing too…
It’s my first time building a circuit…
Thanks.

I know it’s disgusting xD.

[K.ostas]

We’ll meed to know what exactly you’ve built there to help. Do you have the schematic of the VCO?

[tomb]

Yep, it’s the cem3340 VCO from lmnc :
https://www.lookmumnocomputer.com/projects#/cem-3340-diy-simple

[analogoutput]

General advice for troubleshooting a module and asking for help

(This is a wiki post, please add and correct!) Look and see if others have had the same problem. Use the Discourse search facility to find topics where the module you’re building is discussed. Inspect your work. Verify all components are correct values. Look for solder connections that are rough, irregular, skimpy, dull, or missed completely (we all do that!) and reflow them. Look for solder bridges between pads and remove them. Check your power connection. If it’s a Eurorack style power cabl…

Advice for troubleshooting 3340 based VCO

This is a wiki post; please correct and improve! This is written regarding the 1222 Performance Oscillator module, but similar things apply to the simple stripboard oscillator or other oscillators based on the 3340 chip. For the stripboard version also see If you are not getting good tones from the oscillator, do the following. If with the 1222 you are also not getting good behavior from the tuner, don’t waste time on trying to fix that yet. Get good tones on the outputs first — the tuner won…

[Dogstar13]

Take some close up pics of the front and back of your strip board.

[SynthesiS]

Are you sure you have wired up the correct pins of your sockets? It is difficult to see the angled corner of the socket, but I am wondering whether the live wire is connected to the right pin. Could you post some close-up photos of the sockets as well?