Drip 175B v2 - problem with attack not working

Hi to all

I posited this on drip site but I don't think there is anybody looking at the 175B help line. 

Everything works fine in limit mode. (attack switch off)
but if I turn on the attack pot I get no compression but it does pass audio cleanly.

If I turn the input pot and the attack pot up all the way and yell into a sm57, I can get a little VU needle movement while in GR mode but as a gain increase not reduction.


it passes audio cleanly and voltages are all in spec.

any help would be greatly appreciated.

Thanks
Fvf

Do you have a scope? maybe you could follow the control voltage and see were it gets hung up when you switch the attack pot on. I would check wiring etc first..

thanks  i will take your advice.