Please help me identify this Brazilian board

[Mark Hammer]

Normally, any populated boards I have are stored inside a plastic sandwich bag with their identification written in marker on the outside.  The other night, however, as I was sifting through one of my big storage boxes of boards, I found one that was all wired up but unmarked.  At first I thought it was some sort of modulation circuit, because the pots had been marked as depth, frequency, and "sw" (for sweep, I suspect).  I searched through my hard drive and couldn't find it.  I plugged it in and tried it out and it seems like it is some sort of sweepable bandpass...I think.  If I could locate the schematic and documentation, though, maybe I'd know if it was working properly, and what to expect from the three controls (10k, 20k and 50k pots).

It uses a dual op-amp, a pair of NPNs, and a single PNP.  I've got a 4558, 5089s and a 3906 in ther, but have no idea if that is what it is supposed to have.  Here is a pic of the component layout and copper side.  The PCB says www.handmades.com.br in the corner, and also appears to say "Guero 2.0", which I gather is Portugese.

Maybe it looks familiar to one of you.  Presumably, I downloaded it from somewhere.

[digi2t]

So far, I'm getting Marshall Shred Master, though not the same.

http://www.scribd.com/doc/95700615/Shred-Master-Guero-En#scribd

[Güero]

I think that's my layout for Ibanez WH10 wah
Güero is a Mexican alias for " white guy " like me
but I'm Brazilian, sorry for the mess

[Mark Hammer]

Actually, that sounds about right.  I do have a faint memory of making up a board for a WH-10, in response to someone's post.  Now I can look up the schematic on my hard drive.  Thanks!   

[cortezthekiller]

http://2.bp.blogspot.com/-zc1j_Ty5CcY/UGpwZF9BZvI/AAAAAAAAAGg/OaWhyYS6Sys/s1600/wh10+wah.jpg

[Mark Hammer]

Thanks, Dave.  I actually had it on my hard drive.  I just didn't think to look in the "wah" folder.