Tonepad Rebote Delay 2.5 doesn't work - debugging needed

[Jule553648]

I've built it and it does not work.

http://www.tonepad.com/project.asp?id=51

I built it using board I etched. Using stock components.

It lets out only clean, non delayed signal basically the same as I would bypass this pedal.(same volume).

The potentiometers do nothing. No effect at all. None of them.

But if I disconnect the battery it does not let the sound through, so it is not accidentally bypased.

All components are correct, I double checked them.

I measured these voltages:

Battery voltage 9.1V (9.4V open circuit)

IC1 - PT2399

1 4,9V
2 2,45V
3 0V
4 0 V
5 2,9V
6 2,4V
7 0,5V
8 0,5V
9 2,45V
10 2,45V
11 2,45V
12 2,45V
13 2,45V
14 2,45V
15 2,45V
16 2,45V


IC2 TL072

1 4,36V
2 4,35V
3 4,35V
4 0V
5 4,22V
6 4,33V
7 4,33V
8 8,70V

It eats 22mA of current with nothing plugged in.


Please help me!

[arma61]

Hi

PT voltages looks good to me, I suggest you to build an audio probe and go poking with it through the signal tracks, the blue ones on tonepad pdf, specially around pins 12-13.
so to trace where the dry and/or delayed signa start/stop.

here's the audio probe link



this is a very well tested circuit (thx Francisco!) ,I think I may say thounds of builds around the word, so it must work! 

cheers
Armando

[jkokura]

Pictures would help.

Usual question is - how's your wiring? Once you're sure it's fine, have you double checked the orientation of everything (You said correct components, but are they orientated right?)? Do you have an audio probe? If so, what does it tell you/not tell you?

I wish I was at home to open up mine and tell you if the numbers are right, but if you're getting straight signal in bypass and without that tells me either your wiring is wrong or you might have a short on the board that's leaking the input right to the output... Maybe? I'm not an expert, just trying to be helpful.

Jacob

[Jule553648]

I will probe it tomorrow.

I only noticed that everyone who I saw PT2399 voltages from, had 0.2V on pin 7 and I have 0.5V. Can this be?