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DIY Stompboxes => Building your own stompbox => Topic started by: denver.p on May 25, 2009, 01:36:43 PM

Title: I Need Help With This Fuzz Face
Post by: denver.p on May 25, 2009, 01:36:43 PM
Here is what I'm working from:
http://www.beavisaudio.com/bboard/projects/bbp_FuzzFace_Rev1_1.pdf
Here is what I have:
(http://i395.photobucket.com/albums/pp40/denver_p/DSCN3149.jpg)
(http://i395.photobucket.com/albums/pp40/denver_p/DSCN3151.jpg)

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

Thanks for your time you guys!
Title: Re: I Need Help With This Fuzz Face
Post by: Electric Warrior on May 25, 2009, 02:08:38 PM
are the left and right hand side + and - busses connected internally?
Title: Re: I Need Help With This Fuzz Face
Post by: arma61 on May 25, 2009, 02:09:39 PM
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
Title: Re: I Need Help With This Fuzz Face
Post by: denver.p on May 25, 2009, 02:17:56 PM
They are now connected, thanks.
The hum is gone, but there does not seem to be any effect.
Title: Re: I Need Help With This Fuzz Face
Post by: denver.p on May 25, 2009, 10:26:51 PM
Any other suggestions?
Title: Re: I Need Help With This Fuzz Face
Post by: arma61 on May 26, 2009, 02:28:50 AM
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
Title: Re: I Need Help With This Fuzz Face
Post by: ShortScaleMike on May 26, 2009, 04:12:37 AM
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
Title: Re: I Need Help With This Fuzz Face
Post by: metzina on May 26, 2009, 08:08:10 AM
Hello,
From the pics it looks like you are omitting the ground side of the input and output cables, you need to ground them.