DEBUGGING!Yes...other scrambler!

[Cosmonaut]

Hi everybody, this is the second time I tried this one...but I can not make it sounds as it should.

thanks in advance!

I have read many posts about the scrambler problems...and I have checked polarity in caps, value in resistance, shorts with voltimeter, and different pinouts for transistors, nothing found at the moment
Here is the checklist to fill out:
1.What does it do, not do, and sound like?
In bypass, my bass sounds ok, through the effect it sounds like an overdrive when the texture pot is measuring 10Kohm, and there is no sound from the effect when texture pot is at 0ohm.

2.Name of the circuit Ampeg Scrambler from Tonepad.

3.Source of the circuit (URL of schematic or project) http://www.tonepad.com/project.asp?id=16

4.Any modifications to the circuit? No

5.Any parts substitutions? If yes, list them.

Q1,Q3,Q4,Q5 are 2N5306  and Q2 is 2N3904. I used every diodes, and are 1N456

6.Positive ground to negative ground conversion?  N

7.Turn your meter on, set it to the 10V or 20V scale. Remove the battery from the battery clip. Probe the battery terminals with the meter leads before putting it in the clip. What is the out of circuit battery voltage? =>
Now insert the battery into the clip. If your effect is wired so that a plug must be in the input or output jack to turn the battery power on, insert one end of a cord into that jack. Connect the negative/black meter lead to signal ground by clipping the negative/black lead to the outer sleeve of the input or output jack, whichever does not have a plug in it. With the negative lead on signal ground, measure the following:
Voltage at the circuit board end of the red battery lead 9.31v
Voltage at the circuit board end of the black battery lead 0v

Now, using the original schematic as a reference for which part is which (that is, which transistor is Q1, Q2, etc. and which IC is IC1, IC2, C1, and so on) measure and list the voltage on each pin of every transistor and IC. Just keep the black lead on ground, and touch the pointed end of the red probe to each one in turn. Report the voltages as follows:

Q1
C =9.32
B =4.42
E =3.50

Q2
C=8.67
B=0.62
E=0.02

Q3:
C=9.20
B=4.90
E=3.80

Q4
C=8.98
B=4.85
E=3.80

D1
A (anode, the non-band end) =4.85
K (cathode, the banded end) =4.87

D2
A (anode, the non-band end) =4.87
K (cathode, the banded end) =4.85

D3
A (anode, the non-band end) =4.87
K (cathode, the banded end) =5.30

D4
A (anode, the non-band end) =4.84
K (cathode, the banded end) =4.85

D5
A (anode, the non-band end) =0
K (cathode, the banded end) =0.57

[Solidhex]

What about the blend control? When its turned completely counterclockwise do you hear your clean signal passing through? If not there's a problem around your first transistor. If that works then its probably a problem around the second transistor. My guess is that you have the pinouts confused on the transistor. The layout allows for both the more common EBC pinout as well as the ECB pinout that 2N5306's have.

[Cosmonaut]

My big fault!!
I read the pinout of Q2: 2n3904 reversed, now it's sounds good, but I think I 'll change some caps for improve the bass response for my 5 strings bass.

Cheers!