Dirtbag problem

[Narsil]

Hello,
This is my first post, so hello to everyone. Sorry for my English.

I have been trying to make this pedal sound properly, but I have had no luck yet. I started with the v3205 chips, then I tried the mods proposed by madbean. And now I have reversed all the changes and used 4x MN3008 and it seemed that this time could be the one.

It started sounding good but stopped. I have traced the signal until before C15. After C15 there is no signal. I do not know if maybe I have blown the MN3008s. I measured 16.5v from my power source.

I have no signal even with the chip removed. I do not know if this is normal or maybe is C15 the bad cap.

Thanks in advance,

[handlefras]

Did you play with the bias trimmers? It is quite easy to bias this up so badly that you receive no delay signal at all. I assume you are still getting clean signal when the pedal is engaged and the blend pot is set to minimum?

[Narsil]

Thanks for your answer.

Yes. I have tried with the bias trimmers and there is no signal at pin 7 of IC4.

The effect was working ok and I was finishing with the gain trimmers. And I don't know what I did that the delayed signal dissapeared and I could only listen the clean signal.