M13 Stompbox Modulator! I had to replace my power supply cord with a universal automatically voltage regulator and manual setting! The Stompbox was working great before I had to get a new cord, and now the power comes on, all of the lights and switches and display work but I can not get any effect sounds to my amp now! The true bypass works, but no effects! Note that I did buy it used and it was set up when purchased! Please help?