Etherwave kit volume antenna problem

The Moog Forum Theremin Forum
1

Hi,

I’ve a problem with the volume antenna on my Eterhwave, in fact there is no sound at all coming out of the unit.
If I shortcut VCA out to GND everything’s fine and pitch antenna’s working just as expected.
But on normal operation nothing at all (well all volume pushed to the max let me hear something)

Then I perform the volume setup as explain in the manual using a voltmeter at pin 12 of U3 and L11 tweaking.
At the volmeter I have -11.14 volts, but whatever I do on L11 I still reading -11.14 volts, far left of far right.

Now I’m lost, if someone as an idea it is more than welcome.

regards,

2

I’ve got an answer from Moog.
L7 and L8 are broken, they will send me two new ones.
The problem is that I can’t by pass both of them, L8 is ok but L7 is also bypassed by a Diode and a capacitance and short cutting L7 is short cutting those to components.
Anyway I tried to short cut it but got no result at all, still waiting for an advice from Moog.

Shame Kit board are not checked a bit better before leaving the factory. Seems to me a bit of a down side.