freestompboxes.org

Got any the schematic or an inside shot?

I started tracing now.
At first some shot shots.
I is hard to trace, because the PCB got a black soldermask and I cannot dismount the PCB.
I have never seen that jack plug until now.
It seems that the jack plug is made up of two sections the PCB part and the enlclosure part
which are either press fitted or snap fitted.
Who knows that type of jack plugs, how can I dismount it.

As far as I am aware the chicken soup is a nobels odr-1 with a small gain mod, you can find a vero layout for here : http://tagboardeffects.blogspot.com.au/ ... odr-1.html
i modded mine with a gain switch to have standard odr-1 , chicken soup and odr-1s in 1 pedal. Its a great pedal IMHO

crw414tele wrote:As far as I am aware the chicken soup is a nobels odr-1 with a small gain mod, you can find a vero layout for here : http://tagboardeffects.blogspot.com.au/ ... odr-1.html
i modded mine with a gain switch to have standard odr-1 , chicken soup and odr-1s in 1 pedal. Its a great pedal IMHO

Thanks!
I had have a rough level overview at the part values , it looks similar to the ODR-1 values,
so I will trace along with the ODR1-schematic.
I think it makes the tracing easyer.

I traced the board along the Nobelman ODR UNO REV.3 schematic.
The Chicken Soup has nearly the same circuit as the ODR UNO has.
I found only four differences as follows.
C29 = 0.47uF has now been replaced by 0.56uf
R11 = 1.8kOhms has now been replaced by 1.5Ohms
R11 = 39kOhms has now been replaced by 43kOhms
R31 = 10kOhms has now been replaced by 33kOhms

The part references on the Chicken Soup PCB are not in accordance with part references on the ODR UNO schematic.

I had mistake in writing correctly it means,

R11 = 1.8kOhms has now been replaced by 1.5kOhms

Do you mean R7?

rs wrote:Do you mean R7?

Thanks, you are right.

R7 = 1.8kOhms has now been replaced by 1.5kOhms

Why the 1k5 resistor across the 250 K gain pot ? Is it to change the pot taper?

Alf

snofla1900 wrote:Why the 1k5 resistor across the 250 K gain pot ? Is it to change the pot taper?

Alf

I don't no why, the Chicken Soup is a derivate of the Nobels ODR-1 at this one the resistor is wired in the same manner,
at the ODR-S and the ODR plus the resistor is connected in series to the gain pot pin 1,
pin 2 and 3 are connected with each other, as you expected.
Maybe a copied mistake in drawing.

snofla1900 wrote:Why the 1k5 resistor across the 250 K gain pot ? Is it to change the pot taper?

Alf

It stops the gain from turning all the way down. Up...its out of the circuit.

I redrawed the schematic.
I would ask you to check the schematic.