I had a problem at a gig the other night. It seems as though my fx return is shot on my ultra. The signal is low and intermittent at best and completely gone at worst. All the cables etc have been tested independently of the Axe. They all are known good. All the input and output knobs are set to their proper positions. Any internal parameters have been set previously and have been untouched. Essentially the rig went from working as desired to total chaos. I completely took down all the routing cable and started from scratch and i'm still having the same problems. Any thoughts? Thanks in advance.
