Pendulum No Sound When Engaged

Ctrl4Smilerz

Well-known member
I just finished this one up and unfortunately I'm getting no sound when engaged. In bypass it works perfectly. All four LEDs light up, although only the ON/OFF indicator turns off when bypassed, the other three continue to throb. Here are the voltages from the 2 ICs:

Top TL074
1 4.20
2 4.70
3 2.70
4 4.72
5 4.74
6 4.56
7 4.32
8 3.90
9 4.50
10 4.20
11 4.35
12 4.25
13 4.20
14 4.15

Bottom TL074
1 4.55
2 4.38
3 4.16
4 4.50
5 4.28
6 4.78
7 4.80
8 2.80
9 4.57
10 3.83
11 4.35
12 3.85
13 4.11
14 3.85

As always the community's help is very much appreciated :)
 
Thank you @PJS. The first time I measured the ICs i held the back probe to a bare part of the case but this time I pressed to the negative terminal of the DC power and got different results:

Top TL074
1 2.65
2 2.65
3 2.65
4 0
5 0
6 0
7 0
8 2.65
9 2.65
10 2.65
11 0
12 3.30
13 2.45
14 4.25

Bottom TL074
0 volts on all pins


So obviously there is a problem with power getting to the ICs. Any suggestions on narrowing it down further?
 
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