Tri-Vibe debug help

[neil411]

Hi guys,

I put this one together after a hiatus from pedal building over the summer. I ran into a few issues that I have fixed, but I still can't seem to get the thing to swing.

I have very soft and slow oscillations and the pots don't seem to make any difference.

Here are my voltages:


Voltage V+ - 9.90 v

NE5532P - IC1
1 - 4.81
2 - 4.81
3 - 4.38
4 - 0
5 - 4.81
6 - 4.81
7 - 4.81
8 - 9.65


TL064CN - IC2
1 - 4.81
2 - 4.81
3 - 7.06
4 - 9.58
5 - 9.11
6 - 4.81
7 - 3.72
8 - 3.65 - 6.00
9 - 4.81
10 - 4.81
11 - 0
12 - 2.50 - 6.40
13 - 4.81
14 - 0.60 - 9.55


JRC13600D - IC3
1 - 1.28
2 - 5.7
3 - 5.04
4 - 5.05
5 - 5.90
6 - 0
7 - 5.90
8 - 4.70
9 - 5.38
10 - 6.59
11 - 9.67
12 - 6.58
13 - 5.04
14 - 5.04
15 - 5.70
16 - 1.28

Anyone see anything that stands out?

Thanks,

[chromesphere]

Hi Neil,

I have a similar problem.  I'm getting a phaser-like effect out of one of the settings on the switch, but nothing on the other two.  My clean signal comes through on both of the others but no effect. 

Not sure if its going to help, but would posting my voltages here help you in anyway?

CS

[chromesphere]

Hey Neil,

Seems my problem was i used a "47uf" cap in place of those 2 back to back caps, instead of "4.7uf" which would explain why i was getting an incredibly subtle effect on 2 of the modes...

That doesnt help you i know.  I did check my voltages with yours and they were in the same ballpark.  if you want any voltage readings, please let me know and ill test them for you.

Otherwise, good luck!

Paul