#1
I got a noise that sounds almost identical to a fret buzz only it on a open string. It's not an action thing because the action is crazy with ~6 mm at the 12th fret on the low E string. Unsure if this is related but there is also a rating sound whenever you move the guitar coming from the head. Anyone know wtf is going on?
#2
Quote by tony00237
It's not an action thing because the action is crazy with ~6 mm at the 12th fret on the low E string. 

You can't necessarily make that assumption.  If the nut slot is cut too low, you'll get fret buzz on the first fret, making the height at 12th fret irrelevant to this issue.  So first, check that the strings pass over the nut at the same (or slightly higher) height as the frets. BTW, it sounds like your action is pretty high and a good setup would make the guitar easier to play.

The rattle coming from the headstock *could* also be the cause of your buzzing. Whether this rattle is a separate issue or not, you want to get to the bottom of it. My first suspicion would be a grommet that fits in the hole where your tuning post passes through the headstock, if your guitar has these. Actually,  any part of the tuning machines could be loose.  Another less likely possibility is a loose truss rod.  Although truss rods are not the way to set your action, they do have an effect on it. If one was loose enough to rattle, it would also explain your high action. These rattles can be a nuisance to locate.  Basically, you have to strum the guitar hard enough to reproduce the rattle, while touching the suspected elements one by one until the rattle stops. 
#3
Quote by tommymc
You can't necessarily make that assumption.  If the nut slot is cut too low, you'll get fret buzz on the first fret, making the height at 12th fret irrelevant to this issue.  So first, check that the strings pass over the nut at the same (or slightly higher) height as the frets. BTW, it sounds like your action is pretty high and a good setup would make the guitar easier to play.


Exactly what I was going to say.
#4
tommymc  Unless, as you suggest, the truss rod is broken in the guitar, or there is an excessive amount of relief in the neck for any reason, the guitar is ready for a neck reset anyway.

With a dead straight neck, it would require close to a 6mm reduction in saddle height, to have the action be 3mm @ the 12th fret.  3mm is what most players consider to be pretty much the maximum for decent playability.

In any case, such a reduction would most likely result in the saddle being under the bridge surface, an intolerable situation.

The TS needs to come up with additional measurements, to enable a better diagnosis / course of 'action'.  <(pun not intended).
Last edited by Captaincranky at Aug 5, 2017,
#5
Might also be a loose trussrod cover screw. Had that before on a friend's Epiphone. Or like above said, something loose on a tuning post.
#6
I still don't know what is wrong but a friend of the family is a former tech and agreed to look at it so it's probably 
#7
tony00237 Good idea! If your guitar has 6 mm (!) of action height at the 12th fret, something needs to be done. A tech will immediately be able to diagnose the geometry of the system, and give you an answer, for better or worse.