AD3208 dry signal ony

[lite1]

Hey there.,
I'm new to this site and hoping for some help. I just built the Scott Swartz AD3208 delay from GGG. The problem is I only get dry signal thru
the unit, no delay or echo. I do not have a scope but do get voltages which seem to be on par with IC spec sheets but Im not 100% sure. Does anyone out there have a schematic or data from their builds listing all expected IC pin voltages and Q voltages. Also one thing, I measured  the MN3102 pin 3 voltage at .6v, which is supposed to be ground??? Anybody know of any problems with the Belling MN3208's out there? Any help would sincerely be appreciated. thanks

[george]

did you follow the instructions for adjusting the trimmers that Scott Schwartz gives on the GGG site?

If these aren't adjusted correctly no signal will flow through the BBDs even if they are OK (which they probably are)

Re MN3102 pin 3, it's not connected to ground. There's a diode in between pin 3 and ground.  What you are seeing is the forward voltage drop thru the diode, so it looks OK.

[markm]

Trimmer adjustment is crucial in this build.
Follow the procedure as described by Scott on GGG.