Foxx tone Machine Debuggin

[lolablues]

Hi,
First time writing the forum...
I'm building a Foxx Tone Machine using a Musikding PCB.
Almost got no sound.
With audio probe i have sound from Q2 collector to the end of the circuit. Gain, octave, tone... everything seems to work from this point.
The voltages are really crazy but i don't know whats wrong.
Changed the transistors but same problem.
I checked values and solder joints and looks OK (but something is not OK ;-)

v=9,48v

Q1
C: 5.45V
B: 4.7mV
E: 0.0mV

Q2
C: 4.88V
B: 5.45V
E: 7.77V

Q3:
C: 7.43V
B: 0.840V
E: 0.207V

Q4
C: 8.17V
B: 0.810V
E: 0.198V

Thanks in advance

Ramiro

[bluebunny]

Welcome, Ramiro.

Do you have pictures of your build - top and bottom?

BTW, here's a copy of the Musikding schematic for anyone who needs to see it:

[lolablues]

[anotherjim]

I don't get it. T2 emitter volts shouldn't be higher than its base or collector. The only way I can get that is to reverse the power supply polarity to the board or have a short circuit to the + supply somewhere connecting to the emitter.

[lolablues]

I tested the diodes before just to know the rigth direction. One OA1182 broke while i was bending the leg. I put a D9K with the same voltage drop.
I used to socket the diodes but i didn't have more terminal strip at the moment....
D1 seems to work fine.
I think the problem is in the R3-4-5-6-8-C2-3 network....

Thanks for your answers

[duck_arse]

I think the problem is in the R3-4-5-6-8-C2-3 network....

look very, VERY closely at R6. is there a yellow band on it?

[lolablues]

 
It's a 100 Ohm insted a 100k...
I'll replace It and write Tomorrow...

Thanks

[lolablues]

That's was the problem....
Now it's working OK.
Sorry for the silly mistake and thanks for the replies.

[duck_arse]

easy. excellent. and, you picked out the problem area yourself, didn't need us at all.