Guitar.....Hum..... problems?

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Guitar.....Hum..... problems?

Postby ValveLust on Mon Jan 19, 2009 6:13 pm

An issue that always comes up with non-guru guitarists which needs to be adressed is Guitar hum..

As example I have a couple of guitars that I haven't dug into as yet that make a loud hum until you ground your hand against the strings?

- Bad or dirty pots?
- Bad pickup?
- Bad jack?
- Or?

For experienced repair techs out there can you advise what things to first do and look for when experiencing hum and other unwanted noises coming from the guitar.

:jam:
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Re: Guitar.....Hum..... problems?

Postby ®ëv. ßïll¥ © on Tue Jan 20, 2009 4:51 am

ValveLust wrote:An issue that always comes up with non-guru guitarists which needs to be adressed is Guitar hum..

As example I have a couple of guitars that I haven't dug into as yet that make a loud hum until you ground your hand against the strings?

- Bad or dirty pots?
- Bad pickup?
- Bad jack?
- Or?

For experienced repair techs out there can you advise what things to first do and look for when experiencing hum and other unwanted noises coming from the guitar.

:jam:

What kind/style of guitars do you have that are doing this?


  • Check to make sure you have a bridge ground connected to the back of a pot.
  • Make sure your pots are grounded.
    • In a Les Paul, a ground wire should connect the NV<--->NT<--->BT<--->BV. Do not connect the BV<--->NV.
    • In a Strat, make sure all 3 pots have a ground wire connecting them.
  • Try a different outlet or circuit in your house/rehearsal space.
  • Flourescent lights? Dimmer switch on the wall?
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Re: Guitar.....Hum..... problems?

Postby mrphotodude on Fri Jan 23, 2009 11:39 am

with noise...
shielding is a good one...try to cutout ground loops...sometimes i will repot a pickup.
good wiring and shielding will cut out most of the noise!

this site has some good tips on it:
http://www.guitarnuts.com/wiring/index.php
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