A friend is selling a guitar with a truss rod which "turns in place and doesn't do anything". I fancy it, but that info might as well be written in Greek before Google Translate existed as far as I am concerned.
Obviously I am not expecting anyone to tell me exactly what is wrong - but what might I be looking at? Someone who did some work on it did say the truss rod was fragile before it stopped functioning.
I am aware that this is like asking what shade of black my t shirt is when the light is off. I am also aware that I will have come to my senses by tomorrow morning. But, as we all know, it is fun to think about these things.