I Need Help With This Fuzz Face

[denver.p]

Here is what I'm working from:
http://www.beavisaudio.com/bboard/projects/bbp_FuzzFace_Rev1_1.pdf
Here is what I have:



I have substituted the BC109s with 2N222As.
Where are my mistakes. It is just making a deep hum.

Thanks for your time you guys!

[Electric Warrior]

are the left and right hand side + and - busses connected internally?

[arma61]

hi

are the rails at the right side connected also to + and - ? It looks like at  least the negative rail nees to be connected

Armando

[denver.p]

They are now connected, thanks.
The hum is gone, but there does not seem to be any effect.

[denver.p]

Any other suggestions?

[arma61]

Hi

being an "easy to build (but sometime hard to work properly!)" efferct I suggest you take off everything and start again, and while building it check all connection with a multimeter (even if the breadboard looks brand new), then you can build an "audio-probe" to check your signal, from In to Out, connection by connection; here's a link to "how to..." http://www.diystompboxes.com/pedals/debug.html

Cheers m8
Armando

[ShortScaleMike]

Get out your multimeter, if you breadboard is anything like mine those chunks of connects for power rails are not connected to each other, I bridged mine with a bunch of jumpers.

So for example I reckon if you test for continuity between the Fuzz pot lug and the cap leg, I bet there is none.

Is this pos ground or neg ground? Take care, in pos ground all jacks/pots etc are grounded to +VE

[metzina]

Hello,
From the pics it looks like you are omitting the ground side of the input and output cables, you need to ground them.