Brought home my first T-bird today - an Epiphone Vintage Pro in black. Pulled it out of the box, no obvious problems. Tried to have a bang on it - strings are slacked off. Ok, no problem. Tuned it up, and the open E makes a truly godawful racket. 1st fret F note, too, and it feels a little goofy. All the other strings ring true with no excessive buzzing anywhere on the neck.
First thought is backbowed neck, so I check relief. I little straight for my taste, but no biggie. So I pull out my setup tools and go to town. I check everything, bridge height, nut height, neck relief, the whole works. The factory setup is surprisingly good, if a little low for my preference. At least it is clear that a setup was done.
Anyway, still buzzing. So I go over every little screw on this thing. Tighten everything - pickup mounting screws, pickguard, tuners, bridge, tailpiece, I checked every screw on this badboy. Still buzzing.
Now I'm starting to get a little worried. I pop the truss rod cover and make sure the nut is snug. Looks good, still buzzing.
Starting to panic now, if I'm being truthful. Then I remember the intonation way way out on the E string and all the other strings were ok. Lightbulb - I swapped out the E string for another one I had lying around, just as a test. Bingo!!!! Turns out I just had a broke-ass E string from the factory, everything is great now. So that's my whole afternoon and I haven't even plugged it in yet lol