Broken truss rod- Geddy Lee Jazz MIJ

Learn about truss rods here
Learn About Truss Rod Installation + Repair - StewMac

 

The fixed end is under the walnut plug by the nut. You have to get the plug out using heat and pushing the rod through or drill it out.

 

See the plug behind the nut?

 

I am not sure how the shop knows that this is where the rod is broken. Did they x-ray the neck? A broken truss rod is going to act the same with a break anywhere along the neck. The fixed end is a good candidate. Have you verified the rod is broken? Just try and adjust it. If the nut bottoms out and keeps spinning it is broken, otherwise not.

 

What are the symptoms? Have the relief/bowing increased drastically? How does the TR nut behave when you try to turn it one or another direction? It there any noise/sound in the neck when you do turn the truss rod nut?
If the TrussRod snapped indeed then it is major PITA. In fact you or luthier will have to redo all the factory work: remove plug at the head, remove skunk stripe, reinsert new TR, glue in new plug and stripe, refinish the neck. If you want to fix it by your own you need all the skills, tools and knowledge to do the job well plus all the required parts/supplies.

 

take the neck off and check the rod.

if it falls out it's broken.

there is a video about removing the walnut plug, but I think the instrument in the video is a stratocaster, but the operation is the same.


edit: see if this helps



plug part here

 

What can you see with the plug removed?

you may need to push from the heel end

can you get the heel nut off?

maybe its stripped?

does the nut turn from the heel?

 

"If you hold the body against the table tightly, it’s easy to pull the neck up and down a fair bit"

I would suggest taking the neck off and check the the neck screws/holes, if it hit hard enough neck could have pulled loose. Then go from there since you said the truss still adjusts.

 

Very un-fender like…. You can usually beat several peeple to death and toss it out a 7th floor hotel room and it’s still in tune.

 

I don't understand. If the heel nut moves, tightens, and holds relief then the truss rod is doing exactly what it's supposed.What is it not doing?

 

How is the truss rod not doing it's job if it tightens into backbow? Doesn't make any sense to me. Neck screws/plate holding fast IDK, weird. Check your bridge if all good re-set your string height action where you like it and enjoy

 

Your truss rod is fine. Your neck probably just got knocked out of alignment. There may have been a shim that shifted. It is also possible that there is a crack in the neck pocket. Take the neck off and take a good look. Oh and don't bring it back to the people who told you it was broken.