The Corruptor

[Flori54]

Hi, all,
I am building the corruptor DIY kit, and have the problem, that after
desoldering/resoldering the main pots (because mounting in the wrong direction at first try, and beeing corrected by Fredryk), I damaged the most left soldering pad (seen from the component side) of the level/volume pot (the upper left pot).
How can I fix that? I would like to know the substitute soldering point.
Thank you for your attention.

[selfdestroyer]

Looking at the build doc:
https://www.parasitstudio.se/uploads/2/4/4/9/2449159/the_corruptor_3_doc.pdf

That pad is just to ground. You can wire up the volume pot to use the same ground pad of the freq pot.

Good luck, I love this PCB.

[Flori54]

Hi, selfdestroyer,
thank you very much for your reply.
I corrected the problem, and now the effect works somehow.
BUT:
there seems to be a big problem with the input.
If I turn the trimmer (200K) fully to the left end, there is a continued sound (like crackling noise) at the output, that never stops, regardless,
if there is a cable at the input, or not. If the trimmer is about 70% to the right end, the continued sound/noise stops, but if I connect a cable, and play
a sound (without reverb or delay), the effect does not stop as the original signal, be there is a kind of "after-sound" for about 500 msec.
It is not possible to control the end of effect sound, regardless of the position of the "input"-trimmer (even, if it is turned fully clockwise/to the right).
I shortened the internal cables to the shortest possible dimension, to avoid (radio) interferences.
Is the rating-dimension of the trimmer correct ? Maybe I should add an additional resistor (200 K) ?
I measured the trimmer with a multimeter, seems to by the annoiunced value (200 K).
I already changed the ic`s. The caps are positioned correctly, like the diodes.
I think, it should be possible for a musician to have perfect control over an effect, otherwise the effect is almost worthless.

[Fatknuckle]

Possibly a cold solder joint?  I just built two of these and they both operate flawlessly, like evil twins.

[selfdestroyer]

Pics of the front and back of the PCB would greatly help troubleshoot also.

[Flori54]

Hi,  Fatknuckle and selfdestroyer,
thank you very much for your answers to my question.
I will check that, and give feedback soon.
Regards,