Finished BluesBraker Stompbox

Started by rasco22862, October 29, 2006, 05:45:53 PM

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rasco22862

I finished solding the traces and all the components of the BluesBraker. Also the wiring. I didn´t put an enclosure yet. The True Bypass work well, but when I switch to the stompbox, i hear nothing. I test all the traces with the tester, also revised the wiring. Here are a few caps:
I made a few changes in some traces, also i skipped traces that are useless in the chematics.The PCB:

The Components:

The Layout:

What should i do? ???

rasco22862

I flip the IC, and worked, but i´m having problems with the pots. First it didn´t sound well, but i touch the volume pot, and sounds great, but with a beeeeeeepp, in the background. How can i fix this?

Meanderthal

 Check for solder bridges- I'm pretty sure I see a few...
I am not responsible for your imagination.

MartyMart

Yup, there's a few "suspect" looking solder blobs and also some loose "whiskers" on your
white wire ends.
Carefully twist and "tin" the ends of wires to prevent this, they can short to other parts of the
board/wires/box - later on if not right now !!

Time for some DMM debugging, read the "what to do when it doesn't work" stickie and post
back some results - it's just guesswork for everyone otherwise :D

MM
"Success is the ability to go from one failure to another with no loss of enthusiasm"
My Website www.martinlister.com

oldrocker

#4
At this point as with all my builds I start from scratch and trace the circuit out.  That pic you have of the bottom of the board is the first thing.  Use a nice magnifying glass and good lighting and take a long close look at the connections.  Making sure what should be touching is and what shouldn't be touching isn't.  An audio probe is a must for tracing the signal path and double check grounds and incoming power (9 volts).   Especially pin 8 for 9 volts and pin 4 for ground on the IC as these are always something I forget.  Your build looks like most of my perfs so with a little patience I'm sure you'll figure it out.  I look for the one or two things that are obviously wrong and when you find them you'll get it working.
With my last perf project the Rebote 2.5 delay I had 3 cold solder joints and 2 connections not soldered together that should've been and at the time I thought I had it all covered.  After a couple hours of debugging I fixed the problems and it worked. Yay!!

oldrocker

I wanted to also say that this is one of my favorite distortion pedals.  It's high end tone and light adjustable overdirive is great with my Colorsound wah and StratoBlaster.  For lead gain I turn the Strato on for solos.  With the whole band playing the BluesBreaker cuts through like a champ.

rasco22862

Okay, thanks for your replies. It´s working now, but i have to flip the IC´s pins because in the PCB it dindn´t match. How do i know if its working ok? I mean i listening a distortion, but how do i know if its the right distortion. Can i listen a different distortion that should be or when everithing its connected properly i must listen a distortion that is  the right distorition?  I´m sending a link to a sample. Please listen and let me know.
http://rapidshare.com/files/1335235/2.mp3
Thanks :icon_biggrin:

rasco22862

Ok, here is a new problem. For testing purposes i decided to use a speakers that i don´t use. So, in the speakers sounds great, but when i test it in my 60 watts amp, i listen a dry beeeeeeeeeeeeeeeeeeeeeeeeeeppppppppppp in the background. Its similiar to the the sound that produce touching one extreme of the wire with your finger or something, and the other extreme its connected to the amp.

izz4u2mm

Hi I see that you might need to buy a wire stripper...you know the simple ones that work like pliers. Also you could twist the ends of wires and tin them with solder...this will help too.
I am new to this stuff and thought I would share my experiences .
Manny