Spirit Box (Ghost Echo) no effect after using overdrive into it

[koolimy]

Hi, I have a question regarding my Spirit Box build. It's recently stopped working after I played my Mach 1 Overdrive (Greer Lightspeed) build into it. I didn't turn on the Spirit Box, it's just at the end of my effects chain and the effect preceding it was the Mach 1 OD.

I was actually having trouble with the Mach 1 OD not working, and just got it to work. The problem was, that after getting the Mach 1 to work, my Spirit Box stopped working.

When I turn the effect on, it passes signal but there's no effect. The LED lights up. If I turn the knobs to their maximum, I hear a faint squealing noise, but I do not hear the reverb effect. The guitar signal still passes through however.

I noticed that this Spirit Box had issues whenever I used an OD pedal in front of it. I once used a Boss SD-1 in front of it, which actually caused my amp to get a weird buzz and stopped the Spirit Box from passing any signal. Now with the Mach 1 OD, it passes signal but there is no effect. Interestingly, my Aberration Fuzz does not cause any issues for the Spirit Box, and neither does my Moonshot Tremolo. After the Boss SD-1 incident, I think I opened it up and probed around and it just started working. It was working perfectly fine until the Mach 1 OD incident.

Could anyone help me understand what's going on?

Thanks!

 

[dcfvgb]

Pics. might be intermittent wiring. Pics! Hook it up to guitar/amp by itself and tap and gently wiggle all the wiring. Pics!

 

[Fama]

My guess is that it's a coincidence and there's a cold solder joint in the Spirit Box, so basically the same thing dcfvgb suggested. Probably wiring, but could be some other component too.

It's easy to draw a conclusion that an OD before it "broke it" or something, but chances are it's more of a coincidence.