Mic input not working in Helix Posted February 20, 2016 Well guys and girls, I got mine back today. Which credit to line6 was a fairly quick turnaround. They put a new input PCB in, but I haven't tried it out yet as I want to get a new mic cable as I am extremely aprehesive about using the same one and something going wrong again. Although the cable and mic work perfectly well through my DAW I'd prefer to err on the side of caution rather than go through the pain of sending it off again. Time to get some playing done at last!!! On the down side the expression/wah wah pedal has developed a horrible squeak and a weird clunky click mid sweep and the phones volume knob came back slightly wonky but working as it should if a little stiffer. I should hopefully be able to get my hands on a mic cable tomorrow and will share the results with you and hopefully stop my moaning once and for all. Fingers crossed.