MOTM

there seems to be problem with my wavewarper,

if I give an input to the audio x input, I get no output whatsoever 
independend of the knobsettings

the Y & Z seems to work OK, individually but also while 'warping'

I can read a voltage on the potmeter of X IN and the jack seems to 
wired correctly, but other than that I have no clue what could be the 
problem, anybody any idea ?

many thanks in advance !
steven