EQD The Depths build issue (volume loss, no audible effect)

[kragg]

Hi,
I built the EQD The Depths circuit using the TagboardFX layout with the daughterboard, and i am experiencing some issues :

- There is no audible effect;
- output signal is below unity gain;
- sometimes, audible input distortion is heard (a bit like crackles).
- The LFO seems to work fine, according to the LED blinking when I turn the pots.

I am using the layout with the external LDR daughterboard (which uses 3 x TL072).

I have used 4xGL5516 and a yellow 5mm led.
I think that my build is quite clean (I checked several times, and didn't notice any trace or cut error).
I have measured the voltages at the IC and transistors pins : they all share the same "voltage pattern" (values between 1 and 1.4V, except pin4 which is 0 and pin 8 which is slightly below 9V) :

IC1
1.43
1.43
1
0
1.30
1.7
1.75
8.8

IC2 (left)
1.38
1.36
0.95
0
0.95
1.37
1.39
8.79

IC3 (right)
1.40
1.38
0.90
0
1.95
1.38
1.40
8.70

Both transistors have 0V at their Emitter, around 0.3 and 0.6 at the Base, and changing values around 3.5 and 4.80 at the collector.


I have read on tagboardeffects that i am not the only one experiencing such issues, but i couldn't find any hint to fix the issue. I'd be grateful if anyone could point me toward a direction where to look at...

Thank you in advance for any help!

This is the layout I used :
https://1.bp.blogspot.com/-so5oKi-dqXc/WDpGTlbG-QI/AAAAAAAAAnw/VxDOS6Byl1UEe_aETL6KcX6W3zlXkF7MQCLcB/s1600/EQD%2B2.png

And this is the original thread :
http://guitar-fx-layouts.42897.x6.nabble.com/EQD-The-Depths-gut-shots-td34241i40.html#a49904