Sounds like something it shorting some where. When you audio probed, did you check the output of the delay chip? I believe you should only be getting delayed signal out of that, no 'clean'. And also, when you take the circuit out of the box, does it work again?
I took the circuit out of the box, hoping that everything would come back to normality again, but no way. I used a bit audio probe, but I began from the input, when in fact is the opposite, must go back from the output. It is very frustrating and time demanding, but there is no other way to find the problem. I´ve got a theory: As I am using the 3PRR, could be any chance that some component died due to the new voltage? How could I know it?
Ariosto
So it worked on 9V and then you increased the voltage?
You can't do that, the 571 will need its biasing resistor values changing for the new voltage.
Mmmm, no. I´ve build it with the 3PRR from scratch.
As in the official Aquaboy PDF says:
"
15v operationHigher supply voltage means more headroom in the signal path which many guitar players like and the Aquaboy sounds
very good at 15v. You will need to change R13 and R14 to 36k to increase the bias output from the compressor. The
biasing procedure will be the same, although the clock frequency range will change a bit. The FDBK control may go into
self-oscillation at an earlier point at 15v operation, so you should socket R30 and increase its value to get the response
you want.
Important: if you run the Aquaboy at 15v it needs to be regulated! Use a Road Rage, 3PRR, or similar charge pump
with a regulator. Feeding more than 15v to the MN3005 could result in damage. One important consideration here is using
a charge pump introduces a second clock into the circuit and this can result in heterodyne (clock noise). If using a charge
pump I suggest you test your build carefully beforehand to ensure you get a good result."
Must I re-check the values of R13 and R14 again? Is there a way to know if I damaged an IC then? Why did it worked out of the box and then died? Why do I have audio signal in both positions?
Thans a lot for your help.