Greetings

I've acquired a SMD populated Natural State and the left channel doesn't work at all.

I've replaced all ICs with the exception of the TL072 op-amps and reflowed every component in the board. (in the left channel area).

I see that the left CTRL LED dimly cycles following the LFO rate at times, but that's about it for what activity I can see when the module is powered up.

Unfortunately I have not been able to use my multimeter because the power cables in my case are pretty short.

Apart from replacing the TL072 op amps. Any other ideas of what could cause the left channel to not work at all?

Hi folks,

I got the presoldered PCB for the Serial module and my LEDs are super high brightness which usually need around 4.7k - which resistors would be correct to replace for lowering LED brightness?

Any quick tips for improving Radio's reception? Usually it's fine when using a long patch cable (1.5m), but in some basement live settings, picking up any stations is difficult.

Hi folks - grateful for any advice!

Just finished my second ST Module and have run into problems - as in no functionality at all!

It's Sum Mix and Pan and I've found there's a short in the power header between -12v and ground. As you can see from the picture there's was a bit of solder splash in the header pin attachments just above and to the right of the power header - in my attempt to clean that up I made it considerably worse so wondering if that's the problem? If so what would be the best way to go about fixing? If not any other suggestions gratefully received.

Thanks in advance, Matt

Hi, building a pair of CV Scan modules. Tried to get clever and put in orange LEDs for the channel indicators at the top, but they are extremely quite dim. I thought it would be an easy resistor swap but it looks like the LEDs are fed by the multiplexer.

Anyone know if there's a way for me to swap some parts and get more current to the channel LEDs at the top?

Or do I just need to swap in red LEDs?

Thx in advance!

Hi! I've recently finished my HH module.

I am noticing two things:

• The Decay knob is quite sensitive (as in, the first 10% makes it sound like a closed or open high hat, after that it is just noise & more noise)

• The color knob changes the loudness quite a bit, fully clockwise the sound is "normal" and the more anti-clockwise it is turned the lower the volume

I just wanted to check if this is normal behavior for the module.

Both pot meters are B100K.

I'm putting together an online purchase of THT components to complete the build for my Alstaden prepopulated PCB from Calsynth. The BOM calls for one 2k Tempco 3300ppm/C. at R10, which uses a THT footprint. Since Tempco resistors aren't accessible from major distributors and are more expensive from specialist shops like Thonk, SynthCube, and ModularAddict, I'm wondering if anyone has tried substituting surface mount tempcos/termistors in its place. Has it been successful or not?

I found this SMT themistor at mouser: 660-LT732ATTD202J390. 2k ohm, 3900 PPM / C. So it's not exactly correct. But some folks on modwiggler have discussed how to wire themistors in parallel/series with regular resistors to achieve alternate temperature coefficient. I don't fully understand the math. If this seems like a viable solution, could somebody please help me calculate what value resistor to use to achieve 3300ppm/C, 2k ohm? Thanks!

Hi, wondering if I can just get by with single gang pots for the Stereo EQ and just short the connections where the dual gang pins would be>?

Hi, where can I find the BOMs for the modules? When I go to the support page, nothing seems to load, I've tried Firefox and Chrome on Windows. Thanks!