Action too high but fret buzz from on all frets from 7th to 23rd

[colin100]

I usually set up my own basses and can nearly always get them just the way I like them but I have a Musicman Bongo 5 and have been trying to set it up nicely. Recently I made some adjustments too the saddles and truss rod as the action was too high for me and also had fret buzz on all strings from the 7th fret onwards. I haven’t had much success and have settled for a compromise of action that is too high and a little fret buzz on these frets. 
 

Any suggestions to remedy this are more than welcome. 
 

Thanks

 

Colin 

[Hellzero]

Go to a luthier.

[Bigguy2017]

Make the neck straight (using truss rod adjustment) - confirm with a notched straight edge.

 

Adjust saddle height screws to get desired action at 12th fret (1.5 - 2.0mm ?).

 

If the saddle heights are way out of range (too high or too low) then shim the neck for correct neck angle...

 

Check nut slot height is good.

 

Should now be in the ball park - any problems?

If individual frets are causing buzz then a level, crown and polish (partial or full fretboard) is indicated.

 

 

[HeadlessBassist]

Definitely sounds like the neck is too straight. Did you recently change string gauges?

 

Set the bridge saddles to your desired string height, then try adding loosening the trussrod a quarter turn at a time. Some necks like a little more relief than you'd think, especially if you like quite a low action (around 2mm at the 12th.)