Annoying Feedback Noise

kevin2joy

New member
I purchased an old guitar about 10 years ago. Someone had put a Charvel neck onto a Kramer. So, recently I decided to make this a project guitar. I replaced tuners, pickups, pots, jack, wires, tremolo, and switch. It has one volume, one tone, a three way switch. I bought a JB for the bridge and Pearly Gates for the neck. I like the 80's hair metal and the heavier type of stuff. George Lynch is my favorite.

Well anyways, I get this hum with a sort of high pitched squeal. I don't have any feedback with my Kramer SM-1 with Active EMG's. I've rewired it several of times replacing the electronics. Same thing. I downloaded the wiring diagram from Seymour for the 1 volume, 1 tone, and a 3-way switch. I can't figure it out. The layout is this. If you flip the guitar over with the neck in the 12 o'clock position, you have the volume first which is to the upper right of the control cavity area, then the switch in the left middle position and then the tone below in line with the volume, and the jack is in the lower left corner of the cavity.

I've tried everything. The longest running wires are from the tremolo to the back of the tone pot and a wire from the hot jack to the lug on the volume pot. I currently have shielded wires running for these two, but same thing. I've followed the wiring diagram exactly except for trying the shielded wire for the longer two. I split the inner wire and the braided wire on the hot jack by inner wire to the hot and the braided wire to the ground along with the other ground wire going to the back of the tone pot. On the other end same thing, hot to the lug and braided to the back of the volume pot. The tremolo, I braided and tinged the inner and braided wire together on both ends. What am I missing or doing wrong?
 
Re: Annoying Feedback Noise

It's almost like there are two noises. One gets quieter when I touch the strings and a higher pitched squeal remains.????? May be it's one noise, I don't know. I've placed sponges underneath the pickups to help make them more level. Pickup height to strings about 1/8".????? I don't know. I know one or both may be a ground issue, but where? Good shiny solders and everything is tug tight.
 
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Does the squealing only happen when the volume is cranked? Have you replaced the pots at all?
 
Re: Annoying Feedback Noise

I've replaced two sets of pots, jacks, and switches. It happens at very low volumes too. The feedback noises increases as the volume is turned up. It's hard to describe the noise. It's a hum with a higher pitched squealing sound. It's almost like an old transistor radio that isn't on a radio station. I can hit a chord or note and I don't hear it. But soon after a note or chord is played it starts to pick up. If I play a note and mute it directly after, it starts again or if the note is held and loses it's sustain, it comes back. I also don't think that I'm getting the umph or full power out of these pickups. I use pedals but it also does this plugged directly into the amp. My other guitar has no feedback playing into the amp and while using an Ibanez Screamer and Boss Overdrive pedal together. I've just played around with the pickup heights and same thing.
 
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There are two questionable places that I'm going to resolder. All the other solders are perfect. I'll be back in a minute.
 
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I resoldered some things and same thing. I may have deduced the problem for you though. If I touch metal components the noise almost completely stops. However, if I touch the outer metal part of the guitar cable that goes into the jack, it completely stops. Any suggestions? This cable is a new monster cable and I've tried other cables.
 
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Re: Annoying Feedback Noise

Definitely sounds like an earth problem, although I have to say I'm no expert. When you touch the metal parts you become the ground, which is not Ideal. I asked if you had changed the pots in case you had fried the insides of one or something. EMGs don't require a ground.... Have you got another passive guitar to try in the same rig?

You have a similar but opposite problem to me; my EMG loaded guitar squeals, even with no strings. But it needs a fair bit of volume and gain before it does it.

Does it do this with both pickups? Have you tried an alternate pickup or pickups? I'm asking these questions because - eventually - someone who knows more than myself will probably weigh in and I guess some of the answers will help!
 
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Re: Annoying Feedback Noise

I changed the jack and resoldered anything that looked a little suspicious. This helped some. It does this with both pickups. I resoldered the red and white wires together. I taped it them well. ???? I looked and tugged on everything and all looks well. Solder is shiny and the solders look good. I can still touch metal and it stops. Is this stuff normal for passive pickups. Maybe, I'm just used to the Kramer SM-1 with EMG's that doesn't have no feedback at all. You don't hear anything from it. By the way, if you're looking for a good solid guitar that won't cost you a lot, buy the Kramer SM-1. I think they have two models-one with Seymour Duncans and the other with EMG's.

There is a ground issue somewhere and I just can't find it. I'm wondering if the wiring diagram from Seymour just isn't cutting the mustard. I don't think this would be the case though, because it works. The same noise from both pickups. It's a constant feedback no matter how I position the guitar in my room. It's not real bad, it's just annoying when I'm trying to learn songs. When I stop to hear what they are doing, I can't hear the song very well for the stupid feedback. I have a Marshall DSL-40C and I never have it past a quarter of the way. I play guitar as a hobby in my room. I'm a disabled vet and I mostly play lying down. So, it's on just loud enough to play along with my stereo. I can still touch something metal and it will stop.
 
Re: Annoying Feedback Noise

maybe you have some of those ubiquitous asian pickups you should get them out a there quick and put in some good ol USA pickups those ubiquitous asian pickups are infesting everything like stickin boll weevils.
 
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Welcome to the forum

Saying you've soldering everything 'just like the diagram', yet you have a problem, that doesn't help anyone help you troubleshoot it. We need to see what you are talking about - someone else might recognize right away something that is wrong when they see it.

Also, don't assume the diagram is flawless. There's a possibility the Duncan diagram is missing a needed connection. The most recent wiring diagrams weren't done by or checked by electricians.

Can you post a very clear picture (or pictures, if necessary) of the actual wiring in the guitar? And the exact drawing you are following?
 
Re: Annoying Feedback Noise

Welcome kevin2joy! Thanks for hanging out. I'm one of the mods.

I just put a few enter/return breaks in your text, to make it easier to read.

We'd be more than happy to help, but we need as much info as you can find.
Try to get a picture with your phone and upload it. It doesn't have to be a work of art, it's just so we can see what's up.
The "insert image" button is right next to the "globe X" (unlink). Point the uploader to the file name, and click.
Medium resolution is OK, we don't need a screen saver... lol

You say the guitar has SD's, but unfortunately bootlegs are all over the place.
A look at the actual pickups would definitely help.

Do you have a ground wire going to the tremolo claw (holding the springs)?
Anything that connects electrically or physically to the bridge, that ultimately winds up going to ground, will take some of that 'open string buzz' away.
 
Re: Annoying Feedback Noise

I hope Musicians Friend isn't selling fake merchandise. I'm starting to wonder. This is more than likely something I'm doing wrong or this feedback is just normal for SD. Let's see if I can download some pictures.
IMAG0065.jpgIMAG0066.jpgIMAG0067.jpgIMAG0068.jpgIMAG0069.jpgIMAG0070.jpgIMAG0071.jpgIMAG0072_BURST001.jpg
 
Re: Annoying Feedback Noise

Thanks for editing my posts. My thoughts race and I tend to run everything together. I was never a good writer. I'm a math and science guy.
 
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Is this happening with a clean sound, too? If there is too much gain going into the front of the amp, I have heard this sort of feedback, too.
 
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It does this on the clean too. It's not quiet as noticeable. Stops when I touch metal. How can I download an audio of this? Let me see if I can figure out how to do this.
 
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I can't do it. I need a URL link and I don't want to put this on YouTube. The only other way might be to email it.?????
 
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Well, the only other way is to put it on you tube. You can hear me go from distortion to clean. You can hear me touch metal parts near the end.
 
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I first bought SD Distortion Mayhems. I originally thought that maybe these pickups were just noisy, so I contacted Musicians Friend to see what would be better suited for me since I mostly play 80's stuff. They recommended the JB and Pearly Gates. I put these on hoping that this would work and unfortunately it was the same thing.
 
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I looked on guitarelectronics.com and found a different wiring diagram. I wired all the grounds to the volume pot. The worst of the noise is gone. I now only have a hum. It goes away after touching metal. I'm an amateur at this so I do have a question. What is the metal flap at the bottom side of the pot? It's resting on the bottom of the control cavity. The position of the inside nuts of the pots are all the way down. This gives me room for the shaft to protrude far enough through the holes so I can secure it from the outside. I have a little extra room to raise the nut if this is a problem.
 
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