Hi all. First Madbean build, first issue, first post.
The pedal works perse. I have guitar signal when bypassed, status LED lights when engaged, rate indicator LED responds to rate adjustments.
However, when pedal is engaged, no guitar signal passes, only a weird midrange oscillation. Also, the rate indicator LED remains lit even when in bypass.
Voltages:
IC 1
1=4.5 8=9.19
2=4.5 7=4.5
3=4.5 6=4.5
4=0 5=4.5
IC 2
1=0 8=3.74
2=4.26 7=3.74
3=3.72 6=4.24
4=8.2 5=8.78
IC 3
1=8.78 8=8.2
2=4.24 7=2.9
3=0 6=8.4
4=4.26 5=.32
IC 4
1=.14~.79 8=9.19
2=4.3~4.8 7=2.8~6.8
3=1.6~6.7 6=4.78
4=0 5=4.4~4.7
Q1
1E=3.3
2B=3.78
3C=9.19
Q2
1E=3.72
2B=4.29
3C=9.19
Q3
1E=3.45
2B=3.97
3C=9.19
Q4
1E=3.4~3.8
2B=4.0~4.3
3C=8.78
Q5
1E=0
2B=4.2~4.3
3C=7.3
A few of the reading don't match up with the ones in the build doc's. Possible a few of the build doc readings are backwards? (i.e. Q1 & IC 2)
Any ideas on where to go from here?
Thanks.
~Troy
![](https://i.imgur.com/HISrHQ0h.jpg)
![](https://i.imgur.com/lLby8Mlh.jpg)
![](https://i.imgur.com/PXWMFkeh.jpg)
![](https://i.imgur.com/w6NfASzh.jpg)
The pedal works perse. I have guitar signal when bypassed, status LED lights when engaged, rate indicator LED responds to rate adjustments.
However, when pedal is engaged, no guitar signal passes, only a weird midrange oscillation. Also, the rate indicator LED remains lit even when in bypass.
Voltages:
IC 1
1=4.5 8=9.19
2=4.5 7=4.5
3=4.5 6=4.5
4=0 5=4.5
IC 2
1=0 8=3.74
2=4.26 7=3.74
3=3.72 6=4.24
4=8.2 5=8.78
IC 3
1=8.78 8=8.2
2=4.24 7=2.9
3=0 6=8.4
4=4.26 5=.32
IC 4
1=.14~.79 8=9.19
2=4.3~4.8 7=2.8~6.8
3=1.6~6.7 6=4.78
4=0 5=4.4~4.7
Q1
1E=3.3
2B=3.78
3C=9.19
Q2
1E=3.72
2B=4.29
3C=9.19
Q3
1E=3.45
2B=3.97
3C=9.19
Q4
1E=3.4~3.8
2B=4.0~4.3
3C=8.78
Q5
1E=0
2B=4.2~4.3
3C=7.3
A few of the reading don't match up with the ones in the build doc's. Possible a few of the build doc readings are backwards? (i.e. Q1 & IC 2)
Any ideas on where to go from here?
Thanks.
~Troy
![](https://i.imgur.com/HISrHQ0h.jpg)
![](https://i.imgur.com/lLby8Mlh.jpg)
![](https://i.imgur.com/PXWMFkeh.jpg)
![](https://i.imgur.com/w6NfASzh.jpg)