[ASK] Buzzing/Noise when i plug my cord to the amp (without the guitar plugged)

Discussion in 'Stratocaster Discussion Forum' started by slianto, Feb 25, 2012.

  1. slianto

    slianto Strat-Talk Member

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    My strat got loud buzzing/hum/noise but it's gone when i touch the metal parts of the guitar/guitar cord. at first i thought it was bad grounding, but i've resoldered everything and the problem still persist.

    and now i realized something:
    1. I turn on my amp - no buzz
    2. I plug in my guitar cord (not plug the guitar yet) - BUZZING
    3. I plug the guitar cord in to my guitar - still BUZZING but not as bad as without the guitar.

    So is this normal to buzz when the cord connected to the amp without the guitar?the buzz is loud.
     
  2. EvilCheese

    EvilCheese Strat-O-Master

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    yes because you probably have metal every where in your house which starts to confuse the chord
     
  3. BBQGuitar

    BBQGuitar Strat-Talker

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    Is your setup near florescent lights?
     
  4. spirit

    spirit Strat-Talker

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    yup, cord picks up static and em noise.
     
  5. slianto

    slianto Strat-Talk Member

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    I tried in another room which is no florescent lights and the problem still persist.
    so I guess the problem is not in the cord?
    Is this grounding problem? I've check all the grounding wire, and resolder them.

    The buzz is gone when the volume is max and tone is 0.when i turn up the tone, then the buzz is increase. when i turn down the volume, the buzz is appear and different, except at min volume, no-buzz. and when i touch the metal parts, it's gone too.

    Any thought?
     
  6. slianto

    slianto Strat-Talk Member

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    Okay, so today i've got a new guitar cord. And it much quieter than before.
    And now i just heard a normal 60th cycle hum?not loud as before, and it's gone when i touch the metal parts.

    and the annoying parts is the popping sound when i touch the metal. especially the strings, when my hands off the string then i touch them back i heard this popping noise.
    Is it a bad grounding?I don't see a mounting screw+solder lug on screwed on the body on my strat. it just grounded on the trem claw. do i need to add one?
     
  7. carver

    carver Gone strangling

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    sounds to this guy like a grounding issue. do you see any thing on the back of your amp that allows you to change the ground? normally is a swtich with a positive on one side and a negative on the other side.
     
  8. slianto

    slianto Strat-Talk Member

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    Okay I've changed my cord and it's significantly decrease now.
    only heard a little hum, and i guess that's at normal level (not very loud as before).
    but the hum is gone when i touch the metal parts. can this be fixed?

    it's annoying to hear the clicking sound,after let go a string, then touch it back, i can hear the clicking sound (grounding). I've turn off all the florescene lamp/laptop/tv everything in the room..but the slight hum still there.

    I heard that shielding will prevent this EMI or stuff, but in this case i guess it's not that?since i turn off all electronic in the room..
     
  9. SurfStrat

    SurfStrat Strat-O-Master

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    this is grounding issue, the clicking may be very annoying, you can have great shield cable etc but if there's no grounding (or poor one) in your building it won't help.
     
  10. slianto

    slianto Strat-Talk Member

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    no shield cable and I used stock vintage strat grounding:

    - 3 black ground wire from pickup go to volume pot,
    - 1 black wire from volume pot to the trem claw
    - 1 black wire from volume pot to the output jack
    - connect all 3 pots with black wire.
    - no wire from the pots to the body cavity.

    I have resoldered them and here's the pic:
    [​IMG]