strange problem, probably dumb mistake

[guitarmonky55]

ok i built a zw-44 ala a pcb layout i found.  upon boxing it up(ive squeezed it all into a hammond 1590b) i find that oddly enough, i get no signal whatsoever when the dc plug is inserted(bypassed or set to go through the signal).  as soon as i remove the dc plug, the bypass signal works.  i realize this is probably a really dumb jack wiring issue, but for some reason ive been beating my head against it since last night and so far have nothing.  any ideas?

[petemoore]

Plug and unplug cables and test whappens with the DMM.
 Use the DMM to see what passes where [around the DC jack, V+ etc.] when...the input jack has a mono plug in it/out of it, and the Plug in/out of the DC jack.
 Check for V+ shorts to ground first, then see what voltages the circuit is seeing.

[guitarmonky55]

righto, im off upstairs to hit it hard with the multimeter.  i think if i dont get it really fast im gonna tkae it all out of the box and lay it on somethign non-conductive to carry it around and prod at it, as i have a feeling the cramped space issue of the 1590b might be causing something to short.

[Samuel]

edited: bah, silly question nevermind