eezapz2101 Posted April 21, 2009 Share Posted April 21, 2009 hi to every one im restoring an ea-250 with gfs loudmouth humbuckers and tnt guitars wiring harness and aslo a coil tap pot now heres the issue i did the instalation acording to the harness spec but the guitar makes noise if i take my hands if the strings why? can someone help me? im a rookie. now i've noticed that some wiring diagrams are diferent in the way the pots are wired why? some tone pots are from the center rod to the back of the pot other diagrams show the left rod soldered to the back of the pot again why? whats the efect or the diference? Link to comment Share on other sites More sharing options...
RobinTheHood Posted April 21, 2009 Share Posted April 21, 2009 hi to every oneim restoring an ea-250 with gfs loudmouth humbuckers and tnt guitars wiring harness and aslo a coil tap pot now heres the issue i did the instalation acording to the harness spec but the guitar makes noise if i take my hands if the strings why? can someone help me? im a rookie. now i've noticed that some wiring diagrams are diferent in the way the pots are wired why? some tone pots are from the center rod to the back of the pot other diagrams show the left rod soldered to the back of the pot again why? whats the efect or the diference? I cant easily answer your tone pot question, because I dont know off the top of my head. But your noise problem is a bad ground. Did you remember to ground to your bridge? This will cause that type of noise. Link to comment Share on other sites More sharing options...
eezapz2101 Posted April 21, 2009 Author Share Posted April 21, 2009 I cant easily answer your tone pot question' date=' because I dont know off the top of my head. But your noise problem is a bad ground. Did you remember to ground to your bridge? This will cause that type of noise.[/quote'] yes i grounded to the bridge Link to comment Share on other sites More sharing options...
carverman Posted April 21, 2009 Share Posted April 21, 2009 now i've noticed that some wiring diagrams are diferent in the way the pots are wired why? some tone pots are from the center rod to the back of the pot other diagrams show the left rod soldered to the back of the pot again why? whats the efect or the diference? first of all, we need to get the correct terminology here..." center rod" = center tap of the tone or volume pot and is the wiper that moves on the horseshoe shaped resistive element that is linear or audio tapered. here's a typical 2 humbucker/2vol/2tone/3way diagram from Seymour Duncan.. http://www.seymourduncan.com/support/wiring-diagrams/schematics.php?schematic=2h_2v_2t_3w Note that the center tap on the tone connects the cap to ground which is the pot case. Viewing the tone pot the outer tap (left ..looking at the diagram) goes to the volume. The tone pot has one floating tap (usually the right side looking at it, but depends on which way the pot is situated in the control cavity) in order to have the tone change following a clockwise rotation. (If the other side of the tone pot gets hooked up, then it would follow a counter clockwise rotation on the SD drawing. ) In essence the capacitor is in series with the resistor of the tone pot, so you can actually wire it 2 different ways.. 1) wire it so that the center tap goes to the cap, and the other side of the cap is soldered to the pot case as in the SD diagram or 2) wire the center tap(tone) to pot case (ground), and solder one side of the cap to the left tap. and the other side of the cap connects to the volume. Either way, it works the same way. Link to comment Share on other sites More sharing options...
eezapz2101 Posted April 21, 2009 Author Share Posted April 21, 2009 first of all' date=' we need to get the correct terminology here..." center rod" = center tap of the tone or volume pot and is the wiper that moves on the horseshoe shaped resistive element that is linear or audio tapered. here's a typical 2 humbucker/2vol/2tone/3way diagram from Seymour Duncan.. http://www.seymourduncan.com/support/wiring-diagrams/schematics.php?schematic=2h_2v_2t_3w Note that the center tap on the tone connects the cap to ground which is the pot case. Viewing the tone pot the outer tap (left ..looking at the diagram) goes to the volume. The tone pot has one floating tap (usually the right side looking at it, but depends on which way the pot is situated in the control cavity) in order to have the tone change following a clockwise rotation. (If the other side of the tone pot gets hooked up, then it would follow a counter clockwise rotation on the SD drawing. ) In essence the capacitor is in series with the resistor of the tone pot, so you can actually wire it 2 different ways.. 1) wire it so that the center tap goes to the cap, and the other side of the cap is soldered to the pot case as in the SD diagram or 2) wire the center tap(tone) to pot case (ground), and solder one side of the cap to the left tap. and the other side of the cap connects to the volume. Either way, it works the same way. [/quote'] question are the volume and tone pots any diferent? to me they look alike but is there a tech diference betweenthem? Link to comment Share on other sites More sharing options...
carverman Posted April 21, 2009 Share Posted April 21, 2009 Physically no, except for the tapers..the volume should be linear and the tone audio or logrithmic. Link to comment Share on other sites More sharing options...
eezapz2101 Posted April 22, 2009 Author Share Posted April 22, 2009 Physically no' date=' except for the tapers..the volume should be linear and the tone audio or logrithmic. [/quote'] can you elaborate on this? Link to comment Share on other sites More sharing options...
carverman Posted April 22, 2009 Share Posted April 22, 2009 can you elaborate on this? sure thing...here ya go. http://www.premierguitar.com/magazine/Issue/2008/Jun/The_Log_and_Short_of_Tapers.aspx Link to comment Share on other sites More sharing options...
eezapz2101 Posted April 25, 2009 Author Share Posted April 25, 2009 first of all' date=' we need to get the correct terminology here..." center rod" = center tap of the tone or volume pot and is the wiper that moves on the horseshoe shaped resistive element that is linear or audio tapered. here's a typical 2 humbucker/2vol/2tone/3way diagram from Seymour Duncan.. http://www.seymourduncan.com/support/wiring-diagrams/schematics.php?schematic=2h_2v_2t_3w Note that the center tap on the tone connects the cap to ground which is the pot case. Viewing the tone pot the outer tap (left ..looking at the diagram) goes to the volume. The tone pot has one floating tap (usually the right side looking at it, but depends on which way the pot is situated in the control cavity) in order to have the tone change following a clockwise rotation. (If the other side of the tone pot gets hooked up, then it would follow a counter clockwise rotation on the SD drawing. ) In essence the capacitor is in series with the resistor of the tone pot, so you can actually wire it 2 different ways.. 1) wire it so that the center tap goes to the cap, and the other side of the cap is soldered to the pot case as in the SD diagram or 2) wire the center tap(tone) to pot case (ground), and solder one side of the cap to the left tap. and the other side of the cap connects to the volume. Either way, it works the same way. [/quote'] hi again i just redid all of the wiriing on my guitar acording to the sd diagrams but the guitar still makes noise when i dont have my hands on the strings and yes all of the pots are grounded together theres a ground cable that goes from pot to pot soldered on the back and one cable to the tailpice (not soldered) can you or any one else guide me as what to do? oh one more thing i instaled a coil tap pot and im using it intead of the tone pot, the thing is that i dont know if that pot is design for tone or volume use. helpppppp Link to comment Share on other sites More sharing options...
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