Could use a little help.....Mosite FUZZrite don't work..........

[Blind Lemon]

Hey guys, lurked here form time to time but I am more of an tube amp builder. I got this Fuzz, a guy brought to me and wants it fixed, asked real nice. I said ok thinking I could learn something. He change the transistors and electrolytic cap, this thing don't work and I really don't know where to start with it. Anyone up for a project and helping a peddle noob.
BTW, I'm not charging this guy just trying to help him out.

BL

[Blind Lemon]

Voltages
Q1=2N2613
C=0
B=9
E=9.3

Q2=2N408
C=0
b=7.3
E=7.6

Like I said haven't been here much, I've got pics but can't find tutorial for posting..................

[John Lyons]

The base should be 0v so I think you have the collector and Base voltages reversed.
Are the transistors in correctly? Maybe that is part of the problem...?

Is this a vintage unit or a clone?

john

[Blind Lemon]

Hey John;
This is a Vintage model, he changed the transistors so I don't know if they are right.

I got pics of this thing if I could find the tutorial to post them...............

[Blind Lemon]

Could the battery leads have been reversed ? He said something about replacing the battery connector?

[Blind Lemon]

The transistors appear to be installed correct...........I am assuming the you read the pinout on a transistor the same as a tube.........looking at it from the bottom? Also I could only find a pinout for the 2n408 and not the 2n2613 are they the same?

BL

[John Lyons]

The circuit is a "positive ground" setup as stock.
Assuming the transistors are PNP (positive ground) then the battery red wire
should be "ground" and the battery black should go tothe collector resistors etc etc.
Sounds like this could be the problem.

John

[Blind Lemon]

The neg wire is going to the board and what I am assuming is the collectors of the transistors if I am reading the pin out correctly.....looking at the transistor from the bottom.