https://guitarnoise.forum/live-sound/60-cycle-hum/ Guitar Noise Discussion Board en-US Thu, 04 Jun 2026 09:00:12 +0000 wpForo 60 https://guitarnoise.forum/live-sound/60-cycle-hum/#post-138997 Wed, 16 Nov 2005 23:48:05 +0000 Live Sound greybeard https://guitarnoise.forum/live-sound/60-cycle-hum/#post-138997 https://guitarnoise.forum/live-sound/60-cycle-hum/#post-138993 Wed, 16 Nov 2005 23:36:43 +0000 Live Sound 2wel Tom https://guitarnoise.forum/live-sound/60-cycle-hum/#post-138993 https://guitarnoise.forum/live-sound/60-cycle-hum/#post-138451 Sat, 12 Nov 2005 23:17:20 +0000
Joe]]> Live Sound forrok_star https://guitarnoise.forum/live-sound/60-cycle-hum/#post-138451 https://guitarnoise.forum/live-sound/60-cycle-hum/#post-138263 Fri, 11 Nov 2005 20:08:57 +0000 Live Sound 2wel Tom https://guitarnoise.forum/live-sound/60-cycle-hum/#post-138263 https://guitarnoise.forum/live-sound/60-cycle-hum/#post-137983 Thu, 10 Nov 2005 18:54:24 +0000 The noise appears to be caused by either the cable or the guitar. On the face of it the problem seems to be more to do with earthing (grounding) than 60Hz hum.
The first place that I would look is the jack socket, in the amp, it's just possible that the connectors need some attention, producing a poor earth connection.
Failing that, I'd test the cable. If the jack plugs aren't moulded on, check that the wires are connected properly. You can fold the cable up and tie it into a knot, before putting on of the jack plugs into the amp socket (poorly screened cables act like an antenna and tying the cable into a knot destroys this ability. If that's the problem, get a new cable.
Remove the backplate from your guitar and make sure that the earth lead, from the pickups/shielding/pots is firmly attached to the vibrato chassis. Connect it if it's not already.
Take the scratch guard off and check all the connections, particularly any wires connected to shielding and the vibrato (the other end of the wire that should be connected to your vibrato should also be connected to ground, either on one of the pots or to a star ground (collecting point for ground connections) nearby. If you don't have any shielding - get some (it's well worth it)!]]> Live Sound greybeard https://guitarnoise.forum/live-sound/60-cycle-hum/#post-137983 https://guitarnoise.forum/live-sound/60-cycle-hum/#post-13006 Thu, 10 Nov 2005 17:45:50 +0000
I have a Fender HD amp and a Fender Strat guitar. After I warm up the tubes and switch off of standby I have this hum coming through the amp. When the guitar is plugged in and I'm not touching any metal on it the hum is there. As soon as I touch the strings, bridge, etc...(metal) it stops or is reduced dramatically. With the guitar unplugged and just the cable inserted the problem is still there. With the amp on and cable not inserted the noise is gone.

I've plugged the amp into a different outlet. Same thing. I can take the cable and guitar close to a table lamp, t.v. etc... and the hum is highlighted, which leads me to believe what I am hearing is a the 60 cycle hum associated with the 110 voltage. Is this something I have to live with?

I just recently replaced the tubes with a fresh set from Eurotubes. Prior to that the hum was very pronounced. The new set seemed to calm it a bit. I also tried a different/cheaper cable. Same results. Thanks in advance for the help.]]> Live Sound 2wel Tom https://guitarnoise.forum/live-sound/60-cycle-hum/#post-13006