ZoaL

I bought a brand new PRS Custom 24, it plays and sounds fkin fantastic... But there is one problem -.-... it has a very loud hum whenever i don't touch the strings, this disappears whenever i touch the strings again. (Dead Silent when this happens)


My other guitars almost have no hum at all in comparison to the PRS C24, is it supposed to be humming a lot?

JoeFlips

No, it's not supposed to be humming. It sounds like a grounding issue. Though I'm surprised that a new guitar of that price and quality started out with a problem.

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ZoaL

Yeah im also surprised that a guitar in that pricerange has a silly problem like that... :/ Everything else on the guitar is just top notch

JoeFlips

I'm guessing that it stops when you touch any of the metal parts?

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☞ Airline 3P Deluxe
✯ Gibson SG Special w/ SD 59's
☞ Victoria MIJ 60's Electric Guitar
✯ Martin DCX1E
☞ Hughes & Kettner Tubemeister 18
✯ Bunch of Pedals
☞ Squier Vintage Modified Jaguar

ZoaL

Exactly.. Even stops when i touch a metal part of the cable going to the guitar

Robbgnarly

take it back to the store and get it fixed or get a new one.

__________________
2002 PRS CE22
197? Sanox Sound Creator LP clone (GFS Fat Pat)
2009 Epiphone G-400 (SH-4)
Marshall JCM2000 DSL100
Krank 1980 Jr 20watt
Krank Rev 4x12 (eminence V12)
GFS Greenie/Digitech Bad Monkey
Morley Bad Horsie 2
MXR Smart Gate

gregs1020

it sounds like a bad solder on a ground somewhere.

Sean should be ashamed of himself.

just get it fixed at the store if possible. if you like everything else about the guitar a simple re-solder should fix it right up.

ZoaL

I just checked a youtube video about the problem http://www.youtube.com/watch?v=V4oh...feature=related 1.20min and on he covers it pretty well :P Exactly what my guitar is doing atm XD!


I wish it was so simple :P Thing is i live in Denmark, can't buy PRS from anywhere but Germany so i had it shipped here -.-. And to return is isn't as simple as i would want it to be

stonyman65

Make sure all connections are soldered correctly, especially the ground/earth wire, and make sure the pickup and control cavities are shielded with either foil/copper tape or conductive paint. Most guitar companies seem to leave this step out of the building process, even high-end builders like PRS. Most of the time you have to do it yourself.

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desperatechris

Yep, thats a grounding problem. Take it back to the shop. I guess that making a mistake like that in the PRS factory will most sertanly get you shot at dawn

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Culler Amps

Sounds like taking it to the shop isn't an option. He said he had it shipped from Germany.



T.S. A grounding issue like this can be as simple as a loose or broken wire / solder joint. If your comfortable doing so remove the rear cover and see if you spy any loose wires in there.

ZoaL

Hey, i just took a picture of the Cavity + The backplate... Does'nt look very shielded if you ask me ? :S

http://i.imgur.com/hML1h.jpg

http://i.imgur.com/n5Ryl.jpg


How can i tell if the guitar has conductive paint, without having a special tool? :P

Offworld92

Are you serious? It's a damn 5 second solder job. Reattach the ground. Done.

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HUMANIZER

This isn't 1968. Use the volume knob.

Main Rig
Ibanez | S420 |
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ZoaL

How can you be so sure that it's a grounding issue? I tried to check around the guitar couldn't find any loose ends? :S

Offworld92

Because there's literally nothing else it could be?

Just because there aren't any blatantly loose wires doesn't mean that all of the connections are solid. There could easily be a cold solder joint somewhere.

This usually doesn't have to be done with Korean guitars, but eh... sometimes things slip through QC. Or, even more probably, maybe something came loose in shipping. But, a general rule of thumb on every cheaper guitar is that you should resolder all of the connections yourself. Especially on Indonesian and Chinese stuff, they are just kind of notorious for having terrible solder jobs.

__________________
In your mind, you can fly.

HUMANIZER

This isn't 1968. Use the volume knob.

Main Rig
Ibanez | S420 |
LTD | EC-1000 |
Peavey | 6505 | MS412 |
Boss | TU-3 | CS-3 | GT-10 | SD-1 | NS-2 |

stonyman65

The only way to know without seeing it is using the probes on a multimeter. Set it to measure DC resistance and touch the two probes to the shield. if you get a reading, it's conductive. If you don't it's not.

Looking at those pictures, the back plate and cavity ARE NOT shielded. Conductive paint is usually a black/grey color, and copper of foil shielding is, well, copper or aluminum foil.

This guy's video explains how shielding works, and how to test if you are shielded.
http://www.youtube.com/watch?v=V4oh...&feature=g-hist

This video shows you how to do it. It's a really easy mod to do.
http://www.youtube.com/watch?v=huc6...feature=related

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hectitor666

Hey, Did You Fix Your Problem? I Have The Same Problem With A Custom Tremonti, Im So Far Away From The Store, How Do You Fix It?

ZoaL

I sent the guitar back to the store where i bought it, and they stated the problem was mine... and it didn't make any noise at their place. So i got it back and i was pretty annoyed.

I raged for a while and finally i got the nerve to take it to a local guitar repair guy, he said he would shield the entire guitar with copperfoil.

He also told me that the reason the guitar makes a lot of noise, is because i live in Denmark... And we have bad standards for ground in our plugs around the house. So this will give a lot of noise problems that don't happen in other countries! And shielding the guitar will most likely make most of the noise disappear... but not ALL of it


Now i just have to wait! Really hope this will fix my problem! =)

Robbgnarly

Get a a power conditioner it will help emencely with bad power issues. you can get them at most music stores

__________________
2002 PRS CE22
197? Sanox Sound Creator LP clone (GFS Fat Pat)
2009 Epiphone G-400 (SH-4)
Marshall JCM2000 DSL100
Krank 1980 Jr 20watt
Krank Rev 4x12 (eminence V12)
GFS Greenie/Digitech Bad Monkey
Morley Bad Horsie 2
MXR Smart Gate