My apologies if this isn't the appropriate section of the forums to post this within...

Anyways, I have a DOD FX25-B pedal and it functions properly when the pedal is engaged/turned on. But when I turn the pedal off, the guitar signal is gone/decreased to static for anywhere from a second to almost 20 seconds until it gradually fades back in and then back at the normal signal/volume. Does anyone know what could be causing this? is this an easy fix?

hope someone can help!!