Hi there people!! Well, this is not my first post, but it's my first "what's wromng with my bass" hahahahha I was playing some blues in my schecter omen extreme 4 with headphones and i was sitting in my computer desk chair, playing like 2 hours. My practice and the only amp I have is the fender rumble 15 (in 2 months I will have a new tc electronics 250 watts amp) and wll like I said, with headphones, and sitting in my chair. But I tell to myself, let me get uo and play, AND I SAY ***! my when I played A in the 4rt string there was a buzz or something like that, and I play different notes and there where separated by 2 or 3 frets in differents strings, FIRST TIME IN 1 YEAR THAT THIS HAPPENS. WHAT'S THE PROBLEM?