Fuzz face build not working

[Swrdsrvrsd]

Trying my second build (after lpb1) and i can get this sucker to work. I've pored over it and i can't see what's wrong. Please help!

My soldering looks janky but continuity testing along the strips works... I've also remembered to twist the tran legs for Q2. I know the voltage readings are off but i dont know why.

Thanks for your help. Using Silicon 2N53033 NPN transistors.


1.What does it do, not do, and sound like?

No sound passes through.

2.Name of the circuit = Fuzz face
3.Source of the circuit (URL of schematic or project) = https://tagboardeffects.blogspot.com/2010/03/few-veros.html 5th board down

4.Any modifications to the circuit? Y
5.Any parts substitutions? If yes, list them.

I used an 8.2k for in place of the 10k trimpot

6.Positive ground to negative ground conversion? N

7.Turn your meter on, set it to the 10V or 20V scale. Remove the battery from the battery clip. Probe the battery terminals with the meter leads before putting it in the clip. What is the out of circuit battery voltage? => 8.39


Voltage at the circuit board end of the red battery lead = 8.03
Voltage at the circuit board end of the black battery lead = 0

Q1
C = 0.25
B = -0.30
E = 0

Q2
C= 7.83
B= 0
E= -0.19

[antonis]

Hi & Welcome..

What kind of transistors are used ..??
(Si or GE, n-p-n or p-n-p, etc)

P.S.
Almost all items legs are prone to short each other..

[PRR]

Janky joints are almost always part of a problem. I suggest you un-jank them. Yes, I have seen some ugly solder joints work fine for years, before the fire started. (This was a 300 Watt amplifier, soldered bad at the factory.)

Q1
C = 0.25

Q2
B= 0

Q1-C should be direct connected to Q2-B. They can not be at different voltages.

The negative voltages at just some of the transistor legs is very odd. We may need to see more of the battery wiring to see if it is wrong.

[Swrdsrvrsd]

Silicon 2N53033

Hi & Welcome..

What kind of transistors are used ..??
(Si or GE, n-p-n or p-n-p, etc)

P.S.
Almost all items legs are prone to short each other..

[Swrdsrvrsd]

The battery wire is just this at the moment

Janky joints are almost always part of a problem. I suggest you un-jank them. Yes, I have seen some ugly solder joints work fine for years, before the fire started. (This was a 300 Watt amplifier, soldered bad at the factory.)

Q1
C = 0.25

Q2
B= 0

Q1-C should be direct connected to Q2-B. They can not be at different voltages.

The negative voltages at just some of the transistor legs is very odd. We may need to see more of the battery wiring to see if it is wrong.

[antonis]

Silicon 2N53033

I'm not aware of such a BJT..

You probably mean 2N5333, judging from its TO-39 package, which is a P-N-P Si BJT..!!
(you should implement 4th layout (positive ground) and not 5th one (negative ground)..

[Clint Eastwood]

I think detective Antonis may be right.

[duck_arse]

2N3053 - med power driver transistor, npn, to-39 why not?

ignore any datasheets that say otherwise, like small signal.

also. welcome.

[andy-h-h]

Apart from always being suspicious of anything involving sockets, have a look at the solder joint on the input cap.  This obviously isn't causing your voltage issue, but it doesn't look connected (3 down, 2 across from top left looking at the solder side of the board)

Get some flux, and reflow the board.  There's a couple of decent joins, but as for the rest...

Good luck