My sx prob is with intonation, I set it up with the tuner on the 12th fret etc, but when I think I'm done I play a few chords and D or A is out. Also my G string is almost way back into the bridge with next to no adjustment left ??? I need help. Thank you.

Intonation

are you in "A" _ 440? digital tuners are set in a440 as a default. if your playing chords and are down half a step. Or improperly tuned (ie: your intonation is out?) I assume you are playing guitar? then it would have trouble picking up proper signal. - if this answer doesnt help. try more specifics. what are you playing ? what display are you referencing. etc. Good luck!!

To adjust the intonation on a guitar you need the following. ..
a electronic tuner
and a small philip screwdriver

when you tune a string say low E you play the note open and adjust tell it's in tune
then to intonate play the low E at the 12th fret
producing a Harmonic, view the tuner it will be sharp or flat,
turn the small philip screw on the bridge adjustment
it only takes a small turn one way or the other so go slow
once the string is tuned at the harmonic note check to see if it's in tune played open, keep tuning and adjusting tell the strings are in tune open and at the 12th fret on all six strings
once intonation is set properly the guitar will sound better
really hope that helps?

okay first you must look at the frets if they are flattened out this is one reason and no matter what you do you will not be able to do it because the flattened frets are now making string contact further up in the scale length instead of in the center of the fret look at your string when you press it down it will be making contact on the very front of the fret making the notes sharp and driving you crazy with repeated attempts at setting the intonation you need a fret dressing if this is not the case and the frets are not worn but the strings are high off the fret board the neck relief needs to be adjusted to much neck curve upward results in higher string travel to be fretted which will add higher pressure to fret a note and making them sound sharp to check the neck take a capo clamp it at 1st fret now go to the fret where the neck joins the body and depress it count back to the halfway point and see how much space is between the top of the fret and the bottom of the string this should be around the eighth fret or seventh take a matchbook cover or a thin piece of plastic like a laminate you cover your pictures or documents with put it between the string and the fret the right height should be that it just fits between without moving the string once you've done this you should be able to intonate but please inspect all your frets first for flattening wear from playing if buzzing occurs after setting the frets in that are higher up the neck need to be dressed because they are not as worn as your regular playing zone which will make them a little taller when adjusting the truss rod do it 1/8 of a turn at a time do not crank it they are very sensitive to torque and the neck will bend backwards you must go slowly restringing and unbolting the neck unless your truss rod is at the headstock these are much easier but still require a little at a time 1/8 turns and patience good luck

Your Fender tuner is crystal controlled and if you set it for A440 Hz, it will be far more accurate than any computer program can generate. Most of these tuners have the ability to be set at different reference pitches. If your guitar intonation doesn't match at the 12th fret, then you have a guitar setup problem, not the tuner. The intonationation is set at the bridge if you have a bridge with individual adjustments.

This sounds like fret buzz caused by improper setup of the guitar. Likely the intonation needs to be set and the string height... possibly a truss rod setup as well. Take the guitar into a shop for setup unless you are adept at setting. There are a couple videos on guitar setup on YouTube, however do NOT try a truss rod adjustment yourself.

Considerations:

1. Intonation problems can be due to worn strings even if the guitar is set up properly. New Strings can fix this. This is the most common problem.

2. Also, changing string size may effect your set up too. Typically, new guitars come with lighter strings such as (9's) which the guitar is set up for. The positive is that 9's fret easily. The negative is that they bend too easily for some players who either slightly bend them when chording (accidentally), or press too hard on guitars with jumbo sized frets, which in turn bends the string toward the fret board causing detuning. To fix these items folks may suggest you get a heavier string like a (10), but the problem can often be solved by playing with a lighter hand, pressing only enough to make contact with the fret and not pressing the string all the way to the fretboard. Check your intonation using this light touch method and see if it's okay verses pressing the string all the way to the fretboard. If the intonation is okay with the light touch, the guitar intonation is set up properly. You may want to consider playing with a lighter hand or getting a guitar without jumbo frets such as Fender strats etc...

Putting a heavier string on a guitar set up for (9's) would likely cause the buzzing that wasn't there before. In this case you'd need the guitar and neck set up again to accomodate the 10's. So decide what size string you want and set the guitar up for that size.

These considerations are true for any electric guitars.

After consideration of all of the above, you still feel it's the guitar, I suggest you push for a replacement or perhaps credit toward another guitar.

TAKE THE LOSS AND START OVER. YOU PUT TOO MUCH MONEY INTO IT ALREADY UNLESS IT'S AMERICAN MADE......SORRY

That's the problem; you're using light gauge guitar strings. Chances are that if you are not used to playing strings that light, you're fretting hand will hit the strings with more force than is neccesary to fret them, thereby forcing them out of tune. You can solve this problem by adding more winds around the string post (three or more winds should do it), or you can switch to a heavier gauge of string.

If they're true locking tuners, they should have a notch on the back of the gear housing that you turn with a nickel to engage the locking mechanism once tuning has been established.

Also; check the intonation of the guitar itself on an electronic tuner. If it tunes right but sounds out of tune when played, this is an intonation issue, and can be solved by adjusting a small set screw that moves the individual saddle back and forth in the tune-o-matic style bridge. You can check this by tuning the string to the correct note, then playing the same string at the 12th fret and checking it against your tuner. If it rings in true, you're fine, if it comes up flat or sharp, every note on the fretboard is going to be off by that much, and you'll have to adjust accordingly (turn the screw to the right to add length and lower a sharp note, turn the screw to the left to subtract length and raise a flat note, if I remember right).

Hope that helps.

Hi there. Use guitar tuner. Pluck string in open position. Tune. Now pluck same string at 12th fret. If tuner says flat, adjust bridge for that string towards neck. Towards bridge if sharp. Repeat procedure until in tune at open and 12th fret. Go to next string and repeat procedure.
Thanks
Paul