Mr. C.O. Jones Posted September 12, 2014 Share Posted September 12, 2014 Hello I recently noticed that my guitar produces some humming when gain and/or overdrive goes up. I know a small amount is normal, but now i think it is to much. Sometimes i even her some cracking noise. When i touch the strings or the bridge normaly it goes away. I have to say that i think it started a day after lowering my action a little, so i was wondering if i maybe broke the ground wire lowering the bridge post. is that possible? I need to know what else can cause this hum. What do i have to check? I have to mention that my guitar has a PCB board, but when i swapped pickups i connected everything and there was no hum, untill now. I compared it with my Epi SG and there is nothing to hear. Thanks and greetings. Link to comment Share on other sites More sharing options...
Shooter.556 Posted September 12, 2014 Share Posted September 12, 2014 Take a multi meter put it on ohms with a beep and check for continuity between your bridge ground wire on your board and your bridge. Put one lead on the bridge and one lead on the bridge ground wire. You should hear a beep or see resistance. If you don't your bridge ground is broken. I just went thru a pickup swap on one of my new Pauls. I got frustrated and ripped it all out and replaced it with 50's style wiring Bourns pots and a perimeter ground. I went thru the tone cap madness after I did that and ended up with a .15 orange drop in the neck 59 and a .22 orange drop in the bridge JB after trying NOS Russian PIOS and hating them. Working with the pcb trying to install duncans got more complicated than it should have been and trying to find the right connectors tried my patience. I shall leave my other new Paul alone. I like the 57s but I hated the burstbuckers in my other one. If your bridge ground isn't broken you may have to ground the pots to stop the hum but I can't confirm that. Hopefully someone with more experience on the new pcb boards can chime in. Link to comment Share on other sites More sharing options...
capmaster Posted September 12, 2014 Share Posted September 12, 2014 Hello I recently noticed that my guitar produces some humming when gain and/or overdrive goes up. I know a small amount is normal, but now i think it is to much. Sometimes i even her some cracking noise. When i touch the strings or the bridge normaly it goes away. I have to say that i think it started a day after lowering my action a little, so i was wondering if i maybe broke the ground wire lowering the bridge post. is that possible? I need to know what else can cause this hum. What do i have to check? I have to mention that my guitar has a PCB board, but when i swapped pickups i connected everything and there was no hum, untill now. I compared it with my Epi SG and there is nothing to hear. Thanks and greetings. Possible on theory but very unlikely exept for rather tarnished bridge posts. The ground wire is connected to one of the bushings. The snap-in connector for the ground wire on the PCBs is a bit delicate. Perhaps the wire slipped out, the spring clamp went bad, or both. Take a multi meter put it on ohms with a beep and check for continuity between your bridge ground wire on your board and your bridge. Put one lead on the bridge and one lead on the bridge ground wire. You should hear a beep or see resistance. If you don't your bridge ground is broken. I just went thru a pickup swap on one of my new Pauls. I got frustrated and ripped it all out and replaced it with 50's style wiring Bourns pots and a perimeter ground. I went thru the tone cap madness after I did that and ended up with a .15 orange drop in the neck 59 and a .22 orange drop in the bridge JB after trying NOS Russian PIOS and hating them. Working with the pcb trying to install duncans got more complicated than it should have been and trying to find the right connectors tried my patience. I shall leave my other new Paul alone. I like the 57s but I hated the burstbuckers in my other one. If your bridge ground isn't broken you may have to ground the pots to stop the hum but I can't confirm that. Hopefully someone with more experience on the new pcb boards can chime in. I believe the pots on PCBs are grounded through nuts on the PCB top, i. e. located between PCB and maple top. Finally, I found out that stacked twin coils reject hum and buzz better than side-by-side ones. EMG pickups are the quietest magnetic pickups I know of, actives and Hi-Z passives as well. Interestingly, regardless of the particular magnetic pickups, when about electromagnetic interference, the piezos in my hybrid solidbodies are quieter than any magnetic pickup I ever heard. Despite of that and as a matter of course, they transduce every touch of my hands on the guitar. Link to comment Share on other sites More sharing options...
Shooter.556 Posted September 12, 2014 Share Posted September 12, 2014 Possible on theory but very unlikely exept for rather tarnished bridge posts. The ground wire is connected to one of the bushings. The snap-in connector for the ground wire on the PCBs is a bit delicate. Perhaps the wire slipped out, the spring clamp went bad, or both. I believe the pots on PCBs are grounded through nuts on the PCB top, i. e. located between PCB and maple top. Finally, I found out that stacked twin coils reject hum and buzz better than side-by-side ones. EMG pickups are the quietest magnetic pickups I know of, actives and Hi-Z passives as well. Interestingly, regardless of the particular magnetic pickups, when about electromagnetic interference, the piezos in my hybrid solidbodies are quieter than any magnetic pickup I ever heard. Despite of that and as a matter of course, they transduce every touch of my hands on the guitar. Thank you for that clarification. I wasn't sure how the new boards were grounded. I only saw a bridge ground on mine connected to a little Phoenix connecter on the board. I learned something new today,thank you! Link to comment Share on other sites More sharing options...
capmaster Posted September 12, 2014 Share Posted September 12, 2014 Thank you for that clarification. I wasn't sure how the new boards were grounded. I only saw a bridge ground on mine connected to a little Phoenix connecter on the board. I learned something new today,thank you! Didn't know up to now they are called Phoenix connectors, so you obviously had something new for me, too. Thank you for that. Link to comment Share on other sites More sharing options...
Shooter.556 Posted September 12, 2014 Share Posted September 12, 2014 Didn't know up to now they are called Phoenix connectors, so you obviously had something new for me, too. Thank you for that. I am a maintenance technician in a factory. I do a lot of controls work. We use them on a bigger scale to tie in wires to a manageable point. They are slick and keep things neat. You are very welcome! Link to comment Share on other sites More sharing options...
Sgt. Posted September 13, 2014 Share Posted September 13, 2014 Hello I recently noticed that my guitar produces some humming when gain and/or overdrive goes up. I know a small amount is normal, but now i think it is to much. Sometimes i even her some cracking noise. When i touch the strings or the bridge normaly it goes away. I have to say that i think it started a day after lowering my action a little, so i was wondering if i maybe broke the ground wire lowering the bridge post. is that possible? I need to know what else can cause this hum. What do i have to check? I have to mention that my guitar has a PCB board, but when i swapped pickups i connected everything and there was no hum, untill now. I compared it with my Epi SG and there is nothing to hear. Thanks and greetings. Yep! Heard this one before ... have a new lp, rewired it and assuming that everything else is normal deduced that the pickups were just hot. have to turn tone down to like 2 to reduce hum enough ... same thing, it goes away when i touch metal. nobody has offered a simple fix for it. If you fix this problem let us know ... it's been driving me crazy for a while ... it's down to hot pickups with strong magnets send out buzz. Link to comment Share on other sites More sharing options...
Mr. C.O. Jones Posted September 13, 2014 Author Share Posted September 13, 2014 Wow i learned a lot, for sure. I checked the connection to the PCB and it does not look like theres something wrong with it, unless this phoenix connector is broke. I will check if the problem is at the bridge bushing. When i swapped pickups everything was fine and sounded great with no hum at all. The hum started when i lowered the bridge, i felt that it was kind of hard to turn the thumb weel next to the volume pot, but i kept turning. I think that is when i messed up the connection on the bushing. I had some little trouble with my bridge to, and thought about to purchase a bridge/tailpiece set. I heard good stuff about the tonepros, what do you guys think, any experience with them? Maybe some better ideas for aftermarket bridge/tailpiece set, please let me know. Thank a lot guys i realy apreciate it. Cheers. Link to comment Share on other sites More sharing options...
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