ISP decimator Saturated sound

[luciano]

hello guys I have a problem  ... pretty much the sound is saturated, almost like a fuzz, if you increase the threshold at the beginning increases the volume, then lowers abruptly. then it does not work at all well, I looked to see if there were courts or bridges, and no, I do not understand the problem, with the sound probe I saw that the signal comes clean, and up to ic in charge of the loop sound is spotless, the problem arises after the resistor 5,1k coming out of 100nF connected to pin 1 of lf347. immediately after the diodes, the signal is distorted.




http://2.bp.blogspot.com/-l2NRTEh3J54/T-8ppoN5mNI/AAAAAAAABm0/L-RQt6ykI84/s1600/ispscheme.jpg
https://guitar-gear.ru/forum/index.php?app=core&module=attach&section=attach&attach_rel_module=post&attach_id=31065
https://dl.dropboxusercontent.com/u/3565959/ISP%20G-String%20Public.pdf

[stonerbox]

You really should include the voltages of Q1, Q2, LF347, LF353 and THAT2181C for a higher chance of help. We need this info to even have a chance in helping you. Please read up on "DEBUGGING - What to do when it doesn't work".
Excuse my French but this piece of shit is notorious for not working, I have build two Decimators and spent weeks on end trying to debug them with virtually no progress whatsoever.. I am sorry to rain on your parade and I hope you will have more luck than me on this (when functional) respected noise gate.

[luciano]

hi , you are right !

voltage is :
V IN : 9,41v

ic 1 -- left down 353
1- 8,07
2- 8,07
3- 0
4- 0
5- 3,96
6- 4,33
7- 4,33
8- 8,67

ic2 -- right down 347
1 - 4,34
2- 4,34
3- 3,96
4- 8,67
5- 4,34
6- 4,34
7- 4,48
8- 4,33
9- 4,33
10- 4,33
11- 0
12- 4,46
13- 4,46
14- 4,59

ic3 -- up right 347
1- 4,18
2- 4,20
3- 4,20
4- 8,67
5- 5,56
6- 5,56
7- 7,87
8- 7,29
9- 7,29
10- 7,29
11- 0
12- 4,32
13- 4,32
14- 4,32

ic4-- left up 353
1- 4,38
2- 4,34
3- 4,34
4- 0
5- 4,34
6- 4,50
7- 1,72
8- 8,67

ic5-- that2181C
1- 4,34
2- 4,54
3- 4,34
4- 4,54
5- 1,50
6- 4,34
7- 8,67
8- 4,34

Q1 2222n
E 1- 0
B 2- 0,61
C 3- 1,51

Q2 5551

E 1- 4,20
B 2- 4,58
C 3- 7,30

[luciano]

Help me please