I have a peavey 112 bandit 100 watt amp. An ibanez gio guitar and a digitech rp55 multi-effect pedal with 80 presets. So it's plugged in right, all the lights come on but i can't change presets. It always stays on 33 or 55. The sound doesn't go through either. I got fresh new batteries and it's plugged in right. Nothing was spilled on it and i always put it where people can't find it or get it after i'm done playing my guitar. So what's wrong? Why is it doing this? I just bought a few weeks ago and i could get that van halen sound on it with preset 23. It even had power flanger and synthesized effects. Please help. So please what's wrong? Also there's no power button, you have to plug the guitar cable into it's place for it to turn on.