Author Topic: Aquaboy 2016 - Very low and distorted delay  (Read 216 times)

WAXOU

  • Diode Destroyer
  • *
  • Posts: 44
  • Seb
    • View Profile
    • WC Shoot
Aquaboy 2016 - Very low and distorted delay
« on: January 26, 2019, 02:12:59 PM »
Hello all,

After almost a year away from the workbench, I'm back with an aquaboy.

Everything went well so far, voltages were consistent with the build doc and I've got sound and delays.
Freq . is 6.6Hz and the pedals is running at 9V.
But since I started to calibrate with audio probing, delays are now weak and distorted, Pin3 and 4 of the Mn3005 are at 8.40V and Pin7 is 5.3V.

If I audio probe on pin7, I've got a clean sound.

Is it possible that I've fried the mn3005 Chip while calibrating ?

Thank


To do is to be -- Descartes / To be is to do -- Sartre / Doo, bee, doo, bee, doo -- Sinatra

Ariosto

  • Transistor Tickler
  • **
  • Posts: 51
    • View Profile
Re: Aquaboy 2016 - Very low and distorted delay
« Reply #1 on: March 22, 2019, 06:10:18 PM »
I have the same problem with mine, only that still stranger. I could calibrate the whole thing, worked OK out the box, and as soon as I boxed everything (PRR and modulation PCB included) BUMP! no delay at all. I tried to reclibrate the trimpots and all Ive got now is a distorted and low delay signal. The Universe is a very strange place.

Ariosto

skeeter

  • Diode Destroyer
  • *
  • Posts: 29
    • View Profile
Re: Aquaboy 2016 - Very low and distorted delay
« Reply #2 on: April 24, 2019, 01:32:29 AM »
My one had  repeats  only when I shook it -non boxed ,nothing worked otherwise,I think pcbs with solder mask hide bad traces or damage the traces ???,I removed a resistor that would show 0 then when the bypas switch was pressed its  real value ,I realized it was part of the buffered bypass ,damaged the trace removing it.