First build frustration-Zeropoint Double Delay no effect

[Crimson_Sky]

Bypass mode works fine, when switched on the led works but I get no effect.
I know the soldering looks sketchy at some places but I already reflowed every joint AND scratched between the tracks with an exacto knife (yeah every single one).
Voltages with pots at 12 ' clock:

Pt2399 voltages in Volts
1:4.94   
2:2.46
3:0
4:0
5:2.7
6:2.45
7:0.45 on the one close to the pots, 0.34 on the other
8:0.9
Right side :all pins are at Vref=2.46

Tl072
1:4.47   8:8.84
2:4.03   7:4.46
3:4.44   6:4.46
4:0         5:4.44

Bc550
C:2.25
B:0.69
E:0.11

These readings look completely normal so where should I focus?

I will build a probe tomorrow to test the signal path but I'm not sure I'm up to the task.

Can I use the rg keen probe with a tube amp or will that damage the amp?

[midwayfair]

Audio probe and see if your signal is (a) making it to pin16 of the PT2399 and (b) where it gets lost after that.

[Luke51411]

Just to clarify, are you getting no effect or no signal when switched on?

[Crimson_Sky]

Just to clarify, are you getting no effect or no signal when switched on?

No effect. Signal goes through unchanged(I can't hear any difference anyway)

[Crimson_Sky]

 I should mention input is grounded with the pedal off, when it is switched on neither input nor output are grounded and there is no short between them.
Just checked +9V , +5V, Vb and Ground rails and there is no broken connection.
Also checked 3pdt switch on continuity mode, works fine.
There is a page on geofex regarding getting little to no effect however it's broken 
Wonder what it said..

[midwayfair]

Seriously, audio probe. There are instructions in the Tech Help Rules thread.

[Jebus]

No effect. Signal goes through unchanged(I can't hear any difference anyway)

I had similar problem with Zero Point Micro II. Turns out the PT2399 was broken.