Before starting any work I plugged in the pedal and it works. Octave two and direct signal work, it's just octave one that is not working.
First thing I did was cleaning the board and remove the oxidized solders and re-solder again. After that I replaced the Octave 1 Pot (still not working). I then tried to trace the Octave Down 1 path and replaced the c29 electrolytic on the audio path, replaced IC4(TL022) (noticed that when IC4 is not present Octave 2 also doesn't work).
What I'm looking at is IC5(TL022) now and perhaps Q7(2SK30) and Q8(2SK30) but I'm really quite lost at the moment.
Anyone with any in-depth to where I should be looking at to find the problem?
Hope someone can help.
Here's the schematic:
Here are the pics:
Also for Q7 and Q8 as they seem to be the only one's that are in the way of the Octave 1 path.
Input Voltage: 9.63v
IC1: TL022
1- 9.56
2- 9.56
3- 9.19
4- 9.63
5- 9.20
6- 9.20
7- 9.20
8- 9.63
IC-2 TL022
1- 9.04
2- 9.19
3- 9.20
4- 9.63
5- 9.21
6- 9.19
7- 8.91
8- 9.63
IC3 TL022
1- 9.04
2- 9.21
3- 9.20
4- 9.63
5- 9.21
6- 9.20
7- 8.92
8- 9.63
IC4 TL022
1- 9.56
2- 9.56
3- 9.21
4- 9.63
5- 9.20
6- 9.18
7- 9.18
8- 9.63
IC5 TL022
1- 9.53
2- 9.56
3- 9.63
4- 9.62
5- 9.62
6- 9.56
7- 9.53
8- 9.63
IC6 BA634
1- 9.16
2- 9.17
3- 9.62
4- 9.63
5- 9.63
IC7 MN4013B
1- 9.11
2- 9.15
3- 9.11
4- 9.62
5- 9.15
6- 9.62
7- 9.62
8- 9.05
9- 9.62
10- 9.05
11- 9.62
12- 9.11
13- 9.12
14- 9.62
Q7 (2SK30)
Drain- 5.19v Gate- 1.90/ 2.30v Source- 5.2v
Q8 (2sK30)
Darin- 5.2 Gate- 2.17/ 2.35v Source- 5.19v