Duck box doesn’t quack

[Popnfreshbass]

So I finally had a chance to test this guy out this morning, but I didn’t get any sound after opening it up I realized I put IC1 in the socket wrong. The two bottom legs were sticking out of the socket. After fixing that(I put a whole new 4558 in because the legs got bent) I got sound. But not “quack” just a slight boost. Knobs and switch do nothing. LED lights up.

I have not taken a meter to it yet, or reflowed, or cleaned the board(need more ISO) but I’m hoping you guys see something glaringly obvious that I’m missing.

I used a 1n4148 in place of the DS448 as per the build doc.

I’m also not 100% sure how this circuit works, but I’m assuming the problem is somewhere in the yellow circle. Assuming that’s where the quack comes from.

 

[fig]

The resistors check out.

 

[carlinb17]

Is your lower ic seated correctly? It looks like pin one might not be touching the socket?

 

[Popnfreshbass]

Maybe it's not a duck but a french Canadian goose. Perhaps it's not supposed to quack.

Those fuckers hiss. Nasty things.

 

[Popnfreshbass]

The resistors check out.

Thanks Fig

 

[fig]

What's your Vref & Q1 base running?

 

[Popnfreshbass]

What's your Vref & Q1 base running?

Q1 base at 0.4vdc

Vref at 4.5vdc

 

[shawnee]

Did this ever get resolved? I have the exact same issue:
LED lights up, true bypass works, it passes signal when on but no changes when knobs are turned. Same voltages on the IC's as well. I can hear a change when the switch is flipped though. Any help would be appreciated.

 

[Locrian99]

Did this ever get resolved? I have the exact same issue:
LED lights up, true bypass works, it passes signal when on but no changes when knobs are turned. Same voltages on the IC's as well. I can hear a change when the switch is flipped though. Any help would be appreciated.

I would start a new thread and include some pictures. Include your voltages etc.