My baby, my beloved Classic II is starting to have some issues. It is making random noises. Every once in awhile, the speaker sounds like somebody's crossing its wires inside, you know that really ugly-sounding crackling/staticy sound? It'll go on for a few seconds and then stop. It's been doing this for a little while, but it seems that after I moved it to the other side of my desk recently it's gotten far worse. Any ideas on what may or may not be causing this strange behavior? If it's a sign of something bad, I'd like to nip it in the bud early on.