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Post subject: Jazz 24 truss rod issue...
Posted: Fri May 25, 2012 2:54 pm
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Does anyone know if Fender makes a replacement neck or can repair the truss rod in my existing neck? I have had it for about 5-6 years but recently I took it in for a neck adjustment for the first time just to lower the action and basic setup. My tech told me that he did the best he could do with lowering the strings due to the truss rod not being able to be adjusted any further and he was afraid it would break. To compensate, the bridge saddles had to be lowered and intonation adjusted (plus I had to go to a lighter gauge string for him to even get it that close). Any suggestions? I have owned quite a few basses (Warwick, '71 precision, couple of older Jazz models, etc) and they were all great basses however this one has by far been my favorite. I would put this bass up against any American Jazz that I have ever owned or played for feel and versatility since it can get just about any bass tone variation there is - those basslines are great. I did have the common problem with my original premature preamp death like so many other posts on this bass in various forums but I called Seymour Duncan and they sent me a new one free of charge - now that is customer service replacing a "designed by Seymour Duncan" preamp with a new one. Besides fixing the issue, this preamp sounds better than the original so kind of glad it had to be replaced.
This neck problem though is more serious and I really would like to get it fixed one way or another if anyone has any ideas. I haven't spoken with Fender customer service yet but was wondering if anyone has run into a similar experience. Thanks!


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Post subject: Re: Jazz 24 truss rod issue...
Posted: Fri May 25, 2012 3:56 pm
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Truss rod adjust is not for ajusting string action. Did your tech said the neck ia back bow ? You should see another luthier.


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Post subject: Re: Jazz 24 truss rod issue...
Posted: Sat May 26, 2012 9:22 am
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Maybe I didn't explain this adequately - no it is NOT a backbow problem - relief is at the end of the truss rod adjustment (even after reducing all tension on and and starting over). BTW, I have been a professional musician for over 40 years and usually do the truss rod/saddle adjustments myself but in this case, I took it in to a luthier who is very highly respected in the Tampa bay area since I was already out of options - his suggestion after he confirmed the problem was to put on the next lighter gauge strings and see how close he could get it - this did work and is a partial solution... the guitar is very playable now since he was able to get just a little more out of the truss rod with less neck tension however, I prefer a medium gauge string to due my bass style.
If you seriously believe that a bowed neck has no affect on the feel, action, fret buzz, etc., maybe you do not understand the correllation between neck concave/convex bow and string height/intonation (no offense intended). Or maybe I just did not explain the issue very well. In any case, back to my original question - does anyone know if Fender sells a 24 fret neck or preferably, have any truss rod repair recommendations for this issue? These necks are very hard to come by since this bass uses a full 24 fret neck and not a faux 24 fretboard extension neck that some after-market companies manufacture. I hate to go the replacement route unless necessary and I was posting here to find out if anyone on this forum may have any knowledgable suggestions from experience or would even know if a replacement neck is available at all from Fender (I see the forum DOES have a Fender moderator). Thanks in advance for any and all comments! - James


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Post subject: Re: Jazz 24 truss rod issue...
Posted: Sat May 26, 2012 1:57 pm
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pullenjr wrote:

If you seriously believe that a bowed neck has no affect on the feel, action, fret buzz, etc., maybe you do not understand the correllation between neck concave/convex bow and string height/intonation (no offense intended). - James


Yes I know that very well . Yes I think that I did not understand your explanation the first time.
If neck have too much curve, the string action is higher. And your luthier can't put neck " straight" as needed in Fender specs, even with loose truss rod.

What I don't understand is your luthier is afraid to break truss rod. In this case your neck must have a Bi-flex truss rod, not the standard. With a strandard truss rod , we just need to unscrew the truss rod nut. Everything come loose and can't break . Or it can break if the file are damaged

In Bi-flex , you have to tightened in either way to have the neck curve you want. I don't know wich truss rod your bass have.
If it have a bi-flex the luthier can use a vise and 2 wood clamp and a level to help the neck to be straight. This will relieve tension on the truss rod.

But sure a good luthier know this and probably this do not work on your neck . Is there a chance he don't know this trick ?
This is from Dan Erlewine one of the best luthier I know , he's on the web.

If the luthier is a very good one and said there nothing to do with your neck, he should be right.


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Post subject: Re: Jazz 24 truss rod issue...
Posted: Sat May 26, 2012 3:49 pm
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it sounds like there is defiantly something wrong with the truss. though, if he was scared he was going to break the neck, then maybe its not really the trust that needs to be replaced? maybe the neck is too far gone? if you love the bass..i would just look into getting a new neck for it. i know you can order american standard jazz bass necks for a couple hundred dollars. which is worth it in my opinion. they are graphite re enforced, aka amazingly straight and wont budge on you even the tiniest bit! thats what i would do, just my opinion though

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Post subject: Re: Jazz 24 truss rod issue...
Posted: Sun May 27, 2012 4:28 am
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stratele52 wrote:

What I don't understand is your luthier is afraid to break truss rod. In this case your neck must have a Bi-flex truss rod, not the standard. With a strandard truss rod , we just need to unscrew the truss rod nut. Everything come loose and can't break . Or it can break if the file are damaged
.


I do some mystake with that statement. Please forgive that.

I must say ; if your strings have high action because your neck have to much curve, yes your luthier should tightened the truss rod nut .
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Translation with google;

if the luthier should tighten the truss rod nut may, in fact this is very tight and difficult it is afraid to break the truss rod.
This is why I mention the method used by Dan Erlewine, forcing the neck with carpenter's clamp to remove the truss rod tension so was able to tighten the nut safely.

But maybe he know this , or......he don't know ?

A second opinion from another luthier would be advisable


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Post subject: Re: Jazz 24 truss rod issue...
Posted: Sun May 27, 2012 5:17 am
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Post subject: Re: Jazz 24 truss rod issue...
Posted: Sun May 27, 2012 5:25 am
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This picture is from ; Guitar Player repair Guide by Dan Erlewine page 18


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Post subject: Re: Jazz 24 truss rod issue...
Posted: Tue May 29, 2012 1:21 pm
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That's great info on how to adjust a truss rod.

I agree on using a clamp to take the tension off of the rod.

Maybe this situation would be remedied by using a good shim to bring the neck angle up and therefore reduce the action of the guitar.

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Post subject: Re: Jazz 24 truss rod issue...
Posted: Tue May 29, 2012 1:29 pm
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BCbassman this is the way ONLY if you have some problem with the truss rod . In regular and normal adjustment, you do not have to use clamp


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