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The only reason why I'm thinking on changing the LF353 (for another LF353) it's because I don't hear anything audioprobing the pin 7 of the IC1. At least some sound should be reaching out that op amp and into the BBD, right?

Thanks for the reply! It's good to know that the squeal won't be there when I place the BBDs on the board.

Hi!

I decided to try to succesfully debug an Aquaboy Deluxe from 2013 that I have.  Back then, it didn't made any sound.
I bought a pair of BL3208B  to replace the ones that I had (I always supected that they were defective).

But I started the calibrating process and found out that there is no sound on pin3 of the IC3. And also, no sound at all on the pins 1 or 7 of the IC1. I'm quite sure that the LF353 it's bad, and I'm searching for a replacement at this moment.
I didn't put the IC4 on the board, but if I plug the pedal to an amp there is a high pitch squeal that changes with the rate pot and delay.

Is there any guide of how the voltages should be on all the ICs, so I can compare with the ones that I have?
So far i now that the pin 7 of each BBD should be in the 6-8v range. (https://www.madbeanpedals.com/forum/index.php?topic=30810.msg297061#msg297061)

I though you where referring to the Aquaboy Deluxe 

i asked brian by email a month ago about the dirtbag deluxe stock and he replied me:
"I have not yet decided whether or not to offer more Dirtbag PCBs. I may release a different analog delay project in its place, but I haven't made a final decision."

Kinda bummer, I had problems to get money on my paypal account and when I could get the money there, the PCBs were gone hahaha
but now im expecting for the aquaboy deluxe

I'm waiting to order a few pcbs but waiting on deluxe delay board
Any idea of eta?

He said this in other post:
"I'm currently working on a BL3208 implementation of the Aquaboy to see how it compares to the v3205."

IMO, it will take a little longer that we expected (and maybe because of that he removed it from the web instead of letting it be there with a "coming soon") but i guess it's for the better.

Harbinger, Aquaboy Plus and Retrograde? Are they still going to be released?

Came here to ask the same thing.
The aquaboy deluxe prototype sounded great on youtube