Noise while not touching guitar strings or metal parts


Your guitar is picking up mains hum. This is very common, and as you correctly surmised is due to how the components are grounded and shielded.
Usually this is simple to fix. The first items to check are:
  • your guitar lead and amp - does the noise go away if you use different ones?
  • all solder joints. Are they all solid?
  • all components are grounded, with short connections to the common ground?
  • is there a grounded shield? And if so, is everything connected to it?
  • move the selector switch - does the noise vanish in some positions? This will indicate a dodgy connection in the positions where the noise occurs.


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