Hiya all, been awhile but my beloved seams to be having a bit of an issue. I’ve be hearing random chirps and scratching sounds in songs from my Empeg. At first I thought and hoped well maybe a bad sector but that doesn't explain the scratching sounds. The scratching sound is like a bad speaker wire connection or like a headphone connection when you twist it. I’ve checked my wiring but haven’t found anything bad yet. Could both be caused by a bad sector or could loose dock wires cause this? Could a bad main board component cause this?

Thanks for any ideas,
Rob