GCX Loop Issue

[andrewfoltzmusic]

I sent a query into the info@voodoo labs but since then ive narrowed my problem down to this:

Loop six when put in the circuit in any order causes hum.

Literally any other combination or routing no hum.

When i leave it out the hum is gone.

What could this be?

Is there a problem with the ground connection on the jacks?

Thanks in advance.

[JohnClark]

Could be a broken jack... we would be happy to inspect this GCX for you. How long have you had this GCX and where did you buy it?

[andrewfoltzmusic]

Could be a broken jack... we would be happy to inspect this GCX for you. How long have you had this GCX and where did you buy it?

I just got it like two weeks ago , purchased from Reverb used.

[JohnClark]

I isn't uncommon to find hidden mods in a used GCX, although I can't think of a common one that would cause this specific problem

We would still be happy to inspect this for you and get it running like it should!