slidincharlie Posted April 23, 2007 Report Share Posted April 23, 2007 (edited) Hi, I'm new here. I'm not a guitar builder, but I like to do small jobs (wiring, general setup, etc.) in my guitars... I have a problem with the neck tone pot in my guitar that is driving me crazy . Hope someone can help me. The guitar: my '66 Guild Starfire V, wired with the hot lead from the pickups going to the center lug of the volume pots, like stock. Link to the schematic The problem: the sound of the neck pup gets thinner and weaker (instead of getting darker) when I roll off the neck tone pot. This happens now with a new 300k tone pot as it happened with the old (500k?) pot. This does not happen with the bridge pup. The neck and the bridge pup/pots assemblies are identical. The tone cap is a .022 orange drop. The neck volume pot works beautifully. I have tried a different wiring and two or three different caps to no avail. An update: the neck tone works normally when both pups are engaged. It works oddly as described only when the neck pickup alone is engaged... :-/ Edited April 23, 2007 by slidincharlie Quote Link to comment Share on other sites More sharing options...
Acousticraft Posted April 24, 2007 Report Share Posted April 24, 2007 (edited) Why the need for the master volume? If it is wired the exactly as per the diagram I would try bypassing the master volume by putting a jumper wire across the lugs to see if that makes any difference. You want one with an alligator clip either end. Happy hunting. Edited April 24, 2007 by Acousticraft Quote Link to comment Share on other sites More sharing options...
slidincharlie Posted April 24, 2007 Author Report Share Posted April 24, 2007 Why the need for the master volume? Because I always like to deal with only one volume knob in my guitars. Thus, either I keep the stock master, or I wire my guitar durectly with one volume and two tones. --Carlo Quote Link to comment Share on other sites More sharing options...
Acousticraft Posted April 25, 2007 Report Share Posted April 25, 2007 Did you try the bypass of the master to see if it makes any difference? Quote Link to comment Share on other sites More sharing options...
slidincharlie Posted April 25, 2007 Author Report Share Posted April 25, 2007 If it is wired the exactly as per the diagram I would try bypassing the master volume by putting a jumper wire across the lugs to see if that makes any difference. You want one with an alligator clip either end. I jumpered the two non-grounded lugs of the master pot, but I could not bypass it! The master works normally even with the two lugs shorted... What's wrong? --Carlo Quote Link to comment Share on other sites More sharing options...
jnewman Posted April 25, 2007 Report Share Posted April 25, 2007 To bypass the MV there, you would also have to disconnect the ground from the grounded lug. Quote Link to comment Share on other sites More sharing options...
slidincharlie Posted April 25, 2007 Author Report Share Posted April 25, 2007 I've found that the neck pickup has got something wrong: it reads 0.L (open?) on my DMM. It sounds apparently normal (maybe brighter than expected, but not weak); could this apparent internal problem be the cause of the odd behaviour of tone pot describd above? --Carlo Quote Link to comment Share on other sites More sharing options...
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