Big muff pi - problem

[HitTive]

I made Big muff from http://www.generalguitargadgets.com/projects/17-distortion/108-big-muff-pi . I hear only hiss.
Voltage:
Q1,Q2,Q3:
C:4,78
B:0,75
E:0,15

Q4:
C:4,5
B:1,5
E:0,98

Can anyone help me?

[Bill Mountain]

I made Big muff from http://www.generalguitargadgets.com/projects/17-distortion/108-big-muff-pi . I hear only hiss.
Voltage:
Q1,Q2,Q3:
C:4,78
B:0,75
E:0,15

Q4:
C:4,5
B:1,5
E:0,98

Can anyone help me?

Those voltages look fine to me.  I'm terrible at debugging advice.  Have you checked for solder bridges?  Does the bypass work?

[runmikeyrun]

"what to do when it doesn't work" stickied at the top of this forum.  Also, an audio probe would be an invaluable tool to use.

[aron]

>I hear only hiss.

That implies to me that you have working transistor stages and somewhere you have a break in the signal chain. Turn down the sustain knob- does the hiss diminish? If so, your signal is probably OK after the sustain knob, but no good before. Suspect the jack wiring and anything before Q1's base.

[HitTive]

Now, effect work (all potentiometer work) but I still hear loud hiss.

[HitTive]

and i have no voltage on sustain potentiometer.

[aron]

Wait.... does it work now? You hear the guitar signal? What changed?

[Mufftastic]

Work backwards.  I am guessing the hiss changes with the volume.  Does the bass/treble content of the hiss change with the tone?

I just finished a pedal with the GGG board and mine is as quiet as can be (noise wise). 

+1 on if the hiss changes with the sustain setting.  Is the noise only when moving the pots?