madbeanpedals::forum

Projects => General Questions => Topic started by: badbean on March 08, 2014, 09:00:03 PM

Title: LaVache - not working, maybe bad cow disease
Post by: badbean on March 08, 2014, 09:00:03 PM
I just finished a LaVache pedal, but it didn't work.  It turned out that I had the transistor in wrong, anyway I got it fixed, but it still acts strangely.  First, the volume only works in the upper 25% which makes me think that I need a new pot.  Anyway, when I play hard, it makes a terrible crunchy diode static noise and also the volume is always less loud then when bypassed.  Anyone have any ideas on what else could cause me this kind of grief? 

On a separate note, I am also wiring a guitar for a friend and I cant find a diagram that gives me what he wants, and I don't have the brains to figure it out myself.  This is what I want have: 2 humbuckers, 2 push pull volumes, 2 tones and a 5 way switch.  Any ideas on that one?  Thanks in advance!

Title: Re: LaVache - not working, maybe bad cow disease
Post by: midwayfair on March 09, 2014, 12:23:26 AM
Quote from: badbean on March 08, 2014, 09:00:03 PM
I just finished a LaVache pedal, but it didn't work.  It turned out that I had the transistor in wrong, anyway I got it fixed, but it still acts strangely.  First, the volume only works in the upper 25% which makes me think that I need a new pot.  Anyway, when I play hard, it makes a terrible crunchy diode static noise and also the volume is always less loud then when bypassed.  Anyone have any ideas on what else could cause me this kind of grief? 

On a separate note, I am also wiring a guitar for a friend and I cant find a diagram that gives me what he wants, and I don't have the brains to figure it out myself.  This is what I want have: 2 humbuckers, 2 push pull volumes, 2 tones and a 5 way switch.  Any ideas on that one?  Thanks in advance!

Dollars to donuts you used a 330K in R4 instead of 330R.

However, post your voltages and pictures.

For the guitar question, it's probably best to start a different thread, and describe what you want the push pulls to do for instance.
Title: Re: LaVache - not working, maybe bad cow disease
Post by: badbean on March 09, 2014, 02:35:01 PM
Quote from: midwayfair on March 09, 2014, 12:23:26 AM

Dollars to donuts you used a 330K in R4 instead of 330R.

I'm impressed!  You were right!  I'll get that switched out and report back.  Do I owe you a dollar now or a donut?
Also good suggestion.  I'll post the guitar question on a new thread.  I think that the push pulls would probably be best used as series/parallel wiring. 
Title: Re: LaVache - not working, maybe bad cow disease
Post by: badbean on March 09, 2014, 07:00:43 PM
wait... I was right the first time.  It wasn't the resistor...
Title: Re: LaVache - not working, maybe bad cow disease
Post by: gtr2 on March 09, 2014, 09:34:31 PM
badbean, love the name
Title: Re: LaVache - not working, maybe bad cow disease
Post by: mattlee0037 on March 10, 2014, 06:23:58 PM
Pics/voltages