Fender Blender build problem

[Pyr0]

Can anyone help with this ?
I've just finished building a Fender Blender using the Topopiccione pcb layout and schematic from here http://topopiccione.atspace.com/pjimages/FenderBlender.sch.gif

It's working, but I'm not sure if all is well.
When I turn the blend control to the clean signal and have the sustain down, I get no sound at all. Is this the way it's supposed to behave or do I have a problem ? Even with sustain up full I get very little sound through the clean side, I guess that's because the clean feed is sitting on top of the 680ohm resistor at the bottom of the 10k pot.

Some of my transistor voltages also look a bit unusual, I searched through various other debug threads for the fender blender and my Q1 and Q2 voltages seem a bit high. I initially used 2SC1815 transistors, but also tried BC183L's and voltages were still the same.

measured with a freshly charged 9v battery measuring 9.5v

Q1
  E: 0.65
  B: 1.11
  C: 7.1
Q2
  E: 6.71
  B: 7.1
  C: 9.5
Q3
  E: 3.06
  B: 3.39
  C: 6.4
Q4
  E: 0.57
  B: 1.19
  C: 2.57
Q5
  E: 0.35
  B: 0.96
  C: 5.16

I've double checked all soldering and component values etc, really scratching my head on this one, seems to be a biasing problem for Q1 and Q2 and maybe that is why the clean signal is almost non existent.
It seems to work fine when blend is clockwise (distorted signal), plenty of weird octave stuff too, and I can't imagine wanting to play it with blend knob fully clean, it's just annoying me at this stage.
And those Q1 Q2 voltages are nothing like in RG's "Blatty or Gated Sound" debug page where he gives an example of debuging a fender blender.

arrghhhhhh !

[rousejeremy]

There's some talk about the voltages for the blender if you scroll down a bit here. http://www.diystompboxes.com/wiki/index.php?title=Debugging
Try the audio probe too.

[LucifersTrip]

since it's similar to the Super Fuzz, you can probably compare voltages in similar stages
http://www.diystompboxes.com/smfforum/index.php?topic=64068.0

it looks like you're not far off at all...

I would look for other working voltages on the  forums and listen carefully to demos on youtube to start

[Pyr0]

Got it 

Hours of fruitless searching for imaginary solder shorts and cold joints and double checking component values, when what I should have done is double checked schematics. 

R5 off the emitter of Q1 in the Topopiccione schematic and layout is incorrect, they have it as 15k and it should be 1.5k, now my Q1 and Q2 have biased up perfectly and I get plenty of nice clean volume with the blend control fully ccw.

Here's both schematics to compare.

Fuzz Central
http://fuzzcentral.ssguitar.com/blender/blenderschem.gif

Topopiccione
http://topopiccione.atspace.com/pjimages/FenderBlender.sch.gif

I guess I now better double check both schematics to see if there are any other nasty differences.

oh and what a crazy pedal it is.