Originally Posted by stevebajauk
Hi, sorry I dont really have any equipment other than a screwdriver haha.
do you know of any websites that have a video for what you are explaining?
Well, if all you have is a screwdriver, then obviously the truss-rod needs adjusting.
Seriously, there's a great thread on fret-leveling
here, but without tools, you're pretty much dead in the water. You might as well take it straight in to a tech. If you just wanna know about that one fret, though, lay anything that's straight (don't you even have a 10cm ruler or something? How about a straight-sided shot glass? ) along the neck. If you're buzzing on the 15th and fine on the 16th, maybe the 16th fret is high. If it's high, the straight edge will rock on it like a seesaw. Don't use anything too long, though, or the neck relief might mask the high fret.
You can check the relief (straightness) of the neck by capoing the strings at the first fret, fretting with your finger at the last fret, and measuring the gap between the top of the 8th fret and the bottom of the low E string. There should be some--like 1 or 2 sheets of paper's worth, maybe (.25mm for a 9.5-inch radius neck). The size of the gap depends on the radius of the fretboard. Anyway, if there's no gap at all, the neck is either laser-beam straight or back-bowed, and adjusting the truss rod (lefty-loosy) a little bit MIGHT help.
Good luck with it!