I just bought a 2x12 Ace combo that was shipped to me with the footswitch but not a cord with the footswitch. I used a guitar cable & it would switch channels but no solo boost. I called the shop where I bought it & they sent me out a stereo cord saying it would work now but still no solo boost. The solo boost light doesn't even come on when I push it. Like I said, I can change channels but the solo boost light on the pedal won't light up & there is no audible boost no matter how high I turn the solo knob up. Help!!!!!!!!!!!!!!