So I've had my Pocket POD for a while, and it was working pretty well until it was dropped on a hard floor. Ever since, it randomly cuts out the sound (and the LED light freezes), which is sometimes fixable by jiggling the guitar input jack, or by giving it a few whacks. Otherwise, it just starts to fuzz, then emit a high-pitched sound, and then shuts off, then right back on again, working normally. Sometimes when this happens and I hit it, the screen just displays a few black bars on the left-hand side, which go away after a few more slaps. Oh, and when I turn my amp volume up, the POD seems to be making this crackly sound, kind of like a buzz. Is some of my hardware messed up? Please help me, I have a gig I want to jam at soon! Thanks a lot for your time!!