Help with dead note

[wolf]

I have zero sustain on the A note, 7th fret of the D string... played acoustically or amplified.
Any idea why ?
The same note played anywhere lacks sustain but that one's the worst.
There's no fret rattle, the actions not too low, there's plenty of neck relief, the bridge is correctly adjusted and I like my pickups on the low side so I'm stumped.
Someone suggested touching the headstock against a doorframe and playing the same note to see if it cured it and it did.
He didn't however suggest a cure.

Any ideas ???

[tom]

Have you changed the string.?

[wolf]

Hi Tom, merry Christmas.
I've been trying to cure this issue since I received the guitar.
When I take it out of rotation I look again for a solution.
The door frame tip was only suggested this week so I'm focussed on it again.
If I hold the lower edge of the body near the jack , I can feel the lack of resonance of this note.

[Briggs]

Have you tried tuning the string down a 1/2 step and then see if it moves up a fret? Resonance and instruments can be a funny thing sometimes. My Crowdster absolutely loves B. Whether it is tuning the B string or playing a B chord I can feel it vibrating the whole body. Sometimes the wood can have the opposite effect and cancel out some of the resonance, which may be the case your dealing with.

[tom]

Having a note be bad in only one position is odd. I dohave a ttotally dead note in my favorite acoustic, but it doesn't keep me from playing it.
Maybe try a super minor neck adjustment.

[cardinal]

If it goes away when you press the headstock against something, I think that's a dead note that setups can't really fix. Its caused by sympathetic vibrations.

What you can do it try to change something about the guitar. The Fender Fat Finger can move it around. You could try changing the mass of the bridge or swapping the springs around.

I had this issue on a guitar and strangely it has gotten better over time; so much that I don't think I'd notice it now except that it was really bad before. I tried all of the above and some of it worked somewhat, but just playing it seemed to work it out. I couldn't even begin to explain why. In fact, the whole timbre of the guitar has changed for the better over the years.