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View Full Version : New guy with ground hum noise issue - SE Santana



John Scrip
10-15-2012, 07:56 PM
Not my first PRS, not even my first with a ground issue. My previous (Custom 24 SE) was dead quiet on the bridge, sounded like a chainsaw on the neck.

This new Santana is dead quiet in the middle position but there's a distinct hum on either pickup alone.

Granted -- We're talking about some gain here. But if it can be reasonably quiet in one position, can't it just be quiet?

I'm not much of a "regular" player anymore -- But all my old guitars from my long-hair crazy metal days were dead quiet, apart from the occasional "have to be touching it" issue. With these SE's, I just don't know... Is it just inconsistent pickups?

(EDIT)

I probably should mention, I really love this thing otherwise. Great feel, wonderfully playable and quite attractive as far as 'yellow' is concerned. Just gotta get past this hum thing...

CoreyT
10-16-2012, 03:37 AM
My 2012 SE Santana and new SE Custom 24 also do this.
Dead quiet in the middle position

John Scrip
10-17-2012, 03:32 PM
At least I know I'm not the only one. Now... For a solution...

Eh, maybe I need new pickups. I'm not too attached to these anyway. Bummer, though...

AdamMD
10-19-2012, 08:19 AM
You probably just need better shielding in the cavities. Search for guitar nuts and star grounding. If I find the link when I get home ill post it later.

cobrafast1
10-19-2012, 11:05 PM
Sounds more like a cold solder joint to me.

John Scrip
10-24-2012, 01:08 AM
New development (and hey, CoreyT - If you have a minute, maybe try this just for the helluvit).

So I'm doing some stuff last night and I dropped my pick -- As I leaned over to pick it up, the hum disappeared. The pitch (I mean the angle) of the guitar was just about 60 degrees down from where it would normally be. Easily repeated. Almost like sitting facing a tube amp (the amp I'm using at the moment is solid-state and I'm really not that close to it) and turning away.

Now I could be a complete dummy, but this seems to be external -- So I guess the obvious starting point here will be to shield the beast.

My first attempt at anything was to start shutting things down -- I'm a mastering engineer by trade and I actually have this thing hanging right here in the suite with me. But even after shutting everything down - Screens, racks, amps, DA's, AD's, computers (everything except the Mac server, which needs to run 24/7) nothing changed. I even cut the power to the main power regulator.

Of course, all the gear in here, along with the cabling is shielded so well that I used to be able to set my cell phone right on the rack without a problem (although I did use it once to detect a "leak" with a poorly shielded cable). So if there's an EMI field in here, it would probably go unnoticed. That said, I'd sure like to find out if there is...

In any case, the next step (surely before I get the time to shield the body cavities) is probably to drag this thing somewhere else and see if it exhibits the same symptoms. It's pretty weird -- It doesn't matter which way I face (as in, on a compass), but the angle of the instrument -- noise with the neck at 2 o'clock / gone at 4. I know -- "Only play after 4 o'clock" -- Beat you to it. ;)

AdamMD
10-24-2012, 04:14 AM
I still think this is a shielding problem, you last post makes me even more sure. I would shield all of the cavities with copper tape, connect the tape to ground and put your pickups and pots back in. You shouldn't have to desolder too many connections to do this and shouldn't take more than a few hours.

John Scrip
10-24-2012, 07:13 PM
Yep, did the control cavity today -- Even went "down the tube" for the jack. Didn't do a thing. Next time I change strings, I'll pop the pickups out and do those.

Zamiul
01-05-2013, 02:49 PM
Hey, were you guys able to fix the problem? I just bought an SE Custom 24 and I also have the same humming noise. Is this a ground wiring issue? I was really disappointed as I didn't think I would have to face this problem on a PRS Guitar. If you guys have any solution, please do share !

dbonanno
01-05-2013, 02:56 PM
Check your surroundings as well ... neon lights, etc ...

Boogie
01-05-2013, 03:08 PM
No noise is normal, unless you are in front of a radio frequency/electromagnetic noise source (fluorescent light ballast, fan, air conditioner, etc.). Does it only happen when you have the pickups split? Regardless, if you aren't sure, talk to your reseller and ask for help. There are lots of potential reasons for noise and they can help you isolate the issue...including problems with guitar wiring. These guitars are tested and setup in Maryland, so it's not as if qualified hands hadn't already inspected it at east once. It's not impossible, but it's not the first place I'd look for a problem.

Ask yourself:

+ What are you guys playing thru, amp-wise?
+ Where are you experiencing the noise?
+ Do you have florescent lighting there? Is an auxiliary heater running?
+ Anything else plugged into the same outlet or power strip as your amp/modeler?

Then...
+ Try moving to an outlet on a different circuit.
+ Plug into a different amp.
+ Change guitar cables.

sk8erps
04-11-2013, 07:48 PM
I have a PRS Custom 22 and an SE Custom 22. The SE has Seymour Duncan Anlico II in the neck and a JB in the bridge, the CU22 has Dragon II's. I have this same problem with both guitar. It depends on the angle of the guitar as to how much noise there is. I've used different amps, cables, power conditioners and nothing has helped. I had an electrician and the power company out. I just can't figure it out. Also, during the day it's livable but at night it gets so loud I can't play. I've turned off everything an it still happens. Has anybody figured out what this is? You can hear in this vid how the noise changes as I move the guitar around but like I said, during the day it's not as loud.http://www.youtube.com/watch?v=gfivtYkAS3Y&feature=share&list=UUPrjku5SxP_fUnOIf__wzsg

sk8erps
04-11-2013, 07:50 PM
I'm 99% sure it's not my rig but some sort of interference from outside my apartment.

sergiodeblanc
04-11-2013, 11:06 PM
I'm 99% sure it's not my rig but some sort of interference from outside my apartment.

Welcome to the forum Ras, your Q-Tron video was cool.

You gotta go through each piece and find out which one is picking up the most interference, it's totally possible the electrical feed in your apartment isn't grounded at all. How many units in your apartment complex? Does it do it at rehearsal or at gigs? Do you notice it more when the majority of people who live in your building are at home?

maxtuna26
04-12-2013, 02:09 AM
my SE custom 24's stock neck pickup had the problem. When you touch the pickup's height adjustment screw, there's a loud buzz. When i stop touching it, there's a faint buzz, not really noticeable at bedroom levels, live situation could be a disaster, that's why i don't use the neck pickup live. After switching out the stock ones for Dimarzio, buzz is gone. It's definitely the pickups.

sk8erps
04-12-2013, 03:51 PM
I have an outlet tester and it shows everything grounded. There are 8 units in my bldg. I didn't always have this issue so I'm assuming somebody moved in that has something messing with my rig. I haven't had the rig out since this started but it didn't use to make noise. I pulled out my SG last night and it does the same thing. Then I pulled out an old guitar I haven't used in 12 years. It has a Duncan Distortion wired to one volume and that's it. It was noiseless. I'm completely confused by this problem. BTW, that old guitar is not shielded.

sk8erps
04-12-2013, 03:52 PM
Def worse at night.

maxtuna26
04-13-2013, 04:32 AM
Def worse at night.

the vid you posted definitely tells it. could be your neighbour's household circuit. there could be a leak that he couldn't detect or never noticed. when tested in the guitar shop, my bro's tele hummed very loudly and even feedbacks with the amp's volume knob at 11 o'clock, gain at 12 o'clock for crunch channel. though at home, it was quiet, i've tried turning up my amp's volume past 12 o'clock, high gain channel, no feedback or hum, just the amp's hiss.

sk8erps
04-13-2013, 11:22 AM
So what would I do about this? I'm convinced it's from my neighbor. I moved my rig to a different room and it wasn't making the noise. I then moved the rig back to where it was but left it plugged into the outlet of the other room and it started with the noise again.

maxtuna26
04-13-2013, 12:13 PM
i think, the only thing that you can do is to move it to the other room, since the room your rig is currently in has a electrical interruption that is somehow, coming from your neighbour's place. that'd solve the problem, plus you get a fresh new scenery from the new room's window while you play :biggrin:

RDA
04-13-2013, 03:54 PM
What you're hearing is electro-magnetic interference. Moving the guitar around is altering it's relative position within the magnetic flux field. The fact that it happens to more than one guitar would suggest there may be an earth problem with your rig somewhere. ie the transformers are not benefitting from usual screening/earth connection OR the other probable culprits are electric light dimming switches, and chordless phone systems somewhere in very close proximity. Tip...... If things around you don't change, then change the things around you. Take your basic amp + guitar to a completely different environment/location and see if that makes any difference.

sk8erps
04-14-2013, 11:46 AM
I tend to agree. I moved my rig out to my livingroom and didn't have the problem. So would I need to just move my rig or is there something I can buy to help? Kinda don't wanna take up the livingroom and I have 5 pets that shed. They aren't allowed in the jam room but I can't keep them out of the livingroom.



What you're hearing is electro-magnetic interference. Moving the guitar around is altering it's relative position within the magnetic flux field. The fact that it happens to more than one guitar would suggest there may be an earth problem with your rig somewhere. ie the transformers are not benefitting from usual screening/earth connection OR the other probable culprits are electric light dimming switches, and chordless phone systems somewhere in very close proximity. Tip...... If things around you don't change, then change the things around you. Take your basic amp + guitar to a completely different environment/location and see if that makes any difference.

sk8erps
04-14-2013, 11:48 AM
Not sure what you mean about an earth problem and transformers though.

sk8erps
04-22-2013, 09:27 AM
Can someone explain what is meant by an earth problem? Does this mean I need to get my rig to a repair shop or do I need an electrician to fix the wiring in my apartment? I really need some help as I haven't been able to plug in and play in at least 2 weeks. My next move is selling all my gear b/c it's pointless to own if I can't use it.

Victek
04-22-2013, 09:34 AM
Can someone explain what is meant by an earth problem? Does this mean I need to get my rig to a repair shop or do I need an electrician to fix the wiring in my apartment? I really need some help as I haven't been able to plug in and play in at least 2 weeks. My next move is selling all my gear b/c it's pointless to own if I can't use it. The term "earth" (as used here) is another way of referring to "ground" - a possible earth problem meaning a bad ground somewhere, but you've already looked into that...

sk8erps
04-22-2013, 11:26 AM
I've looked into a ground issue in the outlets in my apartment with an outlet tester and they all show correct grounding. So would this issue presumably be in my rig? Could something have gone bad in my amp. I had a mili-second power outage where everything just flashed off and back on in the blink of an eye. my comp rebooted but everything else seemed ok. I was playing and had my amp and pedalboard all on when this happened. Could something have shorted in my amp or my power supplies or my pedals?

CoreyT
04-25-2013, 05:25 AM
I saw a topic on another forum about noise entering into your gear, and they talked about line conditioners.
Much different than an ordinary surge protector, and this one here was recommended to me.
Furman M-8X2 400V Power Conditioner (http://www.amazon.com/Furman-M-8X2-400V-Power-Conditioner/dp/B003BQ91Y6/ref=sr_1_1?rps=1&ie=UTF8&qid=1366885138&sr=8-1&keywords=Furman+M-8x2)
Sweetwater has them also, but I bought one a few minutes ago from Amazon so I can have it by this Friday.

You might check into one of these.
The reviews are very good on them.
They are rack mountable too.

http://www.furmansound.com/new/images/highres/M-8x2-quarter.jpg

http://www.furmansound.com/new/images/highres/M-8x2-rear.jpg

sk8erps
04-28-2013, 11:30 AM
Please let me know how well it works. What kind of noise issues are you having?

sk8erps
04-28-2013, 11:36 AM
Here is my issue:
http://www.youtube.com/watch?v=gfivtYkAS3Y&feature=share&list=UUPrjku5SxP_fUnOIf__wzsg

CoreyT
04-28-2013, 01:27 PM
Please let me know how well it works. What kind of noise issues are you having?
The only noise I am getting is when I split the coils on my SE Custom 24, or switch from middle position to treble.
Will fire up my amp and guitars a bit later and report back.
I think my noise though is coming from the guitar itself, and not a line issue.

]-[ @ n $ 0 |v| a T !
04-28-2013, 01:43 PM
Here is my issue:
http://www.youtube.com/watch?v=gfivtYkAS3Y&feature=share&list=UUPrjku5SxP_fUnOIf__wzsg

I had this same problem once. It drove me bonkers.

Then I went to the store and bought an outlet tester. Turns out the outlet I was using was the only one in the house that had no ground.

https://www.theelectricaltoolstore.com/images/400-030.jpg

I still deal with noise in the line from time to time - even with a Furman power conditioner in the loop. Turning off the air filters I run in the big rooms always helps.

Mikegarveyblues
04-28-2013, 01:56 PM
I had a noise issue last year. Drove me nuts because it coincided with me swapping some pups and I was convinced I'd messed up the wiring.

After much messing around testing everything each way we could we determined the source was outside the house. Went away in the end.

What I will say is that the body can act as an antenna and direct some of that noise to your guitar. If you touch the guitar strings, bridge, pup covers and the noise goes away I think your guitar is probably ok.

Mikegarveyblues
04-28-2013, 02:00 PM
Any street lamps outside? Can you get hold of another amp to test or take your amp setup somewhere else.

This can be a bee-itch, but you'll have to go through things methodically and try taking things out of the equation to see if anything changes.

tolm
04-28-2013, 02:26 PM
Worst humming issue I had turned out to bethe halogen lights in the ceiling of the room directly below where my amp was situated. Only happened when they were on!

CoreyT
04-29-2013, 05:17 AM
OK, I only plugged in my SE Tremonti Custom to my new amp yesterday, and it was hooked to the new Furman line conditioner.
No hum in middle pickup position, a little on the neck pickup, but lots of hum on the bridge pickup.
Pretty much the same as the SE Custom too.
I pretty much think it is the SEs, as my 2012 Gibson '61 Reissue SG does not do this.

The SE Custom is worse if you pull the tone control to split the coils.
It will be interesting to see how the 408 compares to my SG as far as hum goes once it shows up.

Guitar99
07-24-2013, 10:43 PM
I just purchased a NEW cu22 and its doing the same thing. My 03 cu22 and 06 cu24 dont do it at all. But they dont have the alumunim tail peice. Kind of a bummer, as Ive had the guitar a few days and really not impressed. Pretty bad hum.