help debugging a bassballs (voltages inside)

[beatnik]

I've built a bassballs for a friend.

But it doesn't work!!

I tried to replace transistors and ics, check component values and the solder side but everything seem to be ok!

I measured voltages but can't say if they are good or wrong. I post here and hope someone could help me spotting the problem.

I used this schematic         http://topopiccione.atspace.com/pjimages/EHBassBalls.sch.gif

IC1

1: 8.10
2: 6.06
3: 0
4: 0
5: 3.47
6: 4.34
7: 4.34
8: 8.69

IC2

1: 4.34
2: 4.34
3: 4.24
4: 0
5: 4.24
6: 4.34
7: 4.34
8: 8.69

Q1:

C: 8.68
B: 7.62
E: 7.02

Q2

C: 0
B: 0.60
E: 0

Q3

C: 0
B: 0.64
E: 0

[B Tremblay]

Pins 1 and 2 of U1 should have the same voltage reading and be close to Vb.

I'll measure the voltages of mine (I happen to have one on the breadboard) and post them shortly.

EDIT:

Here are the voltages.

U1: 1458
1: 4.57
2: 4.57
3: 4.47
4: 0
5: 0
6: 1.96
7: 2.16
8: 9.10

U2: 4558
1: 4.51
2: 4.58
3: 4.57
4: 0
5: 4.57
6: 4.58
7: 4.51
8: 9.10

Q1: 2N5089
C: 9.1
B: 1.78
E: 1.19

Q2: 2N5089
C: 0
B: .424
E: 0

Q2: 2N5089
C: 0
B: .522
E: 0

The base pins of Q2 and Q3 will vary depending on their respective trimpot settings.

[Mark Hammer]

Something's wrong there.  In particular, something is wrong with Q1 and IC1.  Check for solder bridges or something similar around those 2.

[beatnik]

Brian,

many thanks for posting your voltages.

I'll check more accurately and hope i will find the problem.