04-07-2025, 09:24 AM
Hi PhC.
I need to understand better in order to focus the issue in a more restricted manner.
note that if the feedback control is not working, the signal might be effected and delayed anyway of a time constant but you might not notice that since it sounds the same, just delayed in time.
So please check if that is not the case by listening to the original signal and the "processed signal" side by side.
if the signals are not affected at all but still sound passes though, that means that the Delay chip is alive (but maybe not 100% working).
The potentiometers might be damaged --> TEST: Try to control the time or the feedback with CV.
Unfortunately it might be very hard to test something with the multimeter since you would need to measure points in the middle of the PCB sandwich, so i would troubleshoot for exclusion.
Maybe drop us an email and we can go on from there and exchange videos where you show us the issue in more details.
I need to understand better in order to focus the issue in a more restricted manner.
note that if the feedback control is not working, the signal might be effected and delayed anyway of a time constant but you might not notice that since it sounds the same, just delayed in time.
So please check if that is not the case by listening to the original signal and the "processed signal" side by side.
if the signals are not affected at all but still sound passes though, that means that the Delay chip is alive (but maybe not 100% working).
The potentiometers might be damaged --> TEST: Try to control the time or the feedback with CV.
Unfortunately it might be very hard to test something with the multimeter since you would need to measure points in the middle of the PCB sandwich, so i would troubleshoot for exclusion.
Maybe drop us an email and we can go on from there and exchange videos where you show us the issue in more details.