fuzz face not working now in PNP Negative Ground

Started by freax, August 26, 2006, 11:13:54 AM

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freax

Hi !

I had my fuzz face working in PNP Positive Ground perfectly but I decided to have this pedal in my pedalboard without caring about batteries.

The pedal was made by another person (buyed from guitar gadjets) but I flipped the condenser, power, ... as indicated.
I rewired everything as http://www.generalguitargadgets.com/diagrams/fuzzface_lo_pn_3pdt.gif and now the pedal isn't working anymore !

When bypassed the sound of the guitar is normal. When ON the sound is weak and the volume lower.
Another interesting thing is that the voltage in Q2 was 5.0 before and now is 10 !

Any idea ?

Meanderthal

 That's exactly the same layout I used and it works great!

Did you include the jumper?

Did you try flipping the transistors?

All I can think of for now...
I am not responsible for your imagination.

freax


Meanderthal

No, I guess not... my mistake. the only other things are the old jumper has to be cut and check the differences in your outboard wiring. If there's an led and 3pdt switch included it's completely different pos ground compared to neg ground.

I am not responsible for your imagination.

freax

Mine is now like the last image, but is not working anymore.

Meanderthal

I am not responsible for your imagination.

freax

Mine has 3PDT switch and led.
I will post a picture tomorrow. Maybe you'le find my mistake.

But I'm afraind that i've burned something...

Meanderthal

One thing I've done is to accidentally wire up a 3pdt switch SIDEWAYS! Easy to do with those 9 lugs...
I am not responsible for your imagination.

petemoore

  I used to test the switches connections first with a DMM.
  But now I look through the lug's 'needleholes' so I can look through three 3PDT lugholes...then the bypass jumper goes across the top.
Convention creates following, following creates convention.

freax

It's working now ! :-)
Don't know for sure what it was but maybe a broken wire  :-/

But now when the guitar volume is a 0 it hums. I'll try the 1000uf capacitor.

[]'s