I just bought a brand new Ibanez Artcore wide body jazz guitar. It was around 400 bucks. The thing is beautiful! I love it. I also bought a new amp with it, and it started working out ok, but I've noticed, when I play, all the sudden, the volume goes all the way down for about 5 seconds, then comes back up. It repeats this about 20 times b4 I get pissed and shut the god damned thing off! Some help? What is this? How can I fix it?