Grace overdrive

[moreduff]

Hey, I made this fuzz, but I get only the asme sound as without fuzz just little quiet. what could be wrong? Does anyone have a sound of One knoob Fat fuzz? ( http://aronnelson.com/gallery/album17/One_Knob_Fat_Fuzz )

[petemoore]

Could be a missed Gnd or non-operational bias setup.

[j0shua]

Grace Overdrive is not a Fuzz....

Grace overdrive is very cool overdrive and also you can turn into Bigg Daddy Distortion , great sound for Solos and Lead ....


www.runoffgroove.com

[MartyMart]

Hey, I made this fuzz, but I get only the asme sound as without fuzz just little quiet. what could be wrong? Does anyone have a sound of One knoob Fat fuzz? ( http://aronnelson.com/gallery/album17/One_Knob_Fat_Fuzz )

The Grace is a nice OD, did you socket the 386 ?
If not, perhaps you applied a bit too much heat to it, or carefully trace
through the circuit, check part values/ground and all connections to the
chip.
It's a simple enough circuit to get going right  
The "One knob fat fuzz" is my twisted version of a LoFoMojO and sounds
very good, more "Fuzz/Distortion"   - well worth the few parts IMHO !!

Marty.

[moreduff]

I just bought a new microchip (LM386) for it ,but it still wont work, I get the same sound, can anyone tell me how to test whats wrong? ( It wont work without batterie eather). BTW when I turn it to full sound the noise cames and I cant hear a guitar sound and when I try to play nothing changes. Maybe this prroblem could apear if I used 2n5459 instead of 2n5457? Bus schematics say that its allright to use other same type semiconductor

[RDV]

Make sure you have your JFET pinout right. Datasheet here.

RDV

[moreduff]

Make sure you have your JFET pinout right. Datasheet here.

RDV

Everything is ok with semiconductor, what else could be wrong?

[j0shua]

What is the voltage on IC ...


here is my values

1- 1.35
2- 0
3- 3.35
4- 0
5- 4.5
6- 9.5 ( battery Imput )
7- 0
8- 1.35
Works 100% ok!

check for those values!

my FET is J210  and my IC is JRC386

[moreduff]

What is the voltage on IC ...


here is my values

1- 1.35
2- 0
3- 3.35
4- 0
5- 4.5
6- 9.5 ( battery Imput )
7- 0
8- 1.35
Works 100% ok!

check for those values!

my FET is J210  and my IC is JRC386

here are my values:

1- 1.35
2- 0
3- 0
4- 0
5- 4.5
6- 9.5
7- 3.35
8- 1.5

I used 2n5459 JFET and LM386N IC.

P.S Voltage values are aprox.

[v00d00blues79]

just my .02, but it looks like pins 3 and 7 are reversed... at least thats the way the voltages look.

[moreduff]

just my .02, but it looks like pins 3 and 7 are reversed... at least thats the way the voltages look.

Everything is the same when I change IC.


BTW when I turn volume to full I hear no sound at all just a crackle,  when I turn it down a little I Hear normal guitar sound without overdrive

[moreduff]

Thanx guys for help    

It`s up and running, can u believe it? my first effect is working

What would you recomend for my next project?

[MartyMart]

Thats great ! Nice feeling isn't it ??  

BTW, what was the problem.... ic ?

Try a ROG "Tube reamer" that was my second effect ! its  GREAT  
better than an expensive TS-808
Marty

[moreduff]

Thats great ! Nice feeling isn't it ??  

BTW, what was the problem.... ic ?

Try a ROG "Tube reamer" that was my second effect ! its  GREAT  
better than an expensive TS-808
Marty

It was potentiometer...

I changed it with one from old non-working TV