Hum showed up randomly in my amps

[supersonic1414]

This afternoon while playing a LP with humbuckers, a hum showed up. I had recently changed the pickups and just got the guitar back so thought something must not be grounded...Tried it in another amp and heard the same thing.....

SO I grabbed a couple other guitars that I had played earlier today with no hum, and the hum was in both amps with both guitars....Any ideas what may be happening in this room or what I should check for? No lights were on, and I can't think of anything else that was different in the room... My HB guitars sound like single coils right now and this is driving me nuts and not normal

 

[satilight]

Plug the amp in another room thats not on the same circuit. You may have a ground issue in the electrical.

 

[Kyle B]

Is there a big TV, A/C motor, or maybe a microwave on the other side of the wall by chance????

 

[satilight]

Not to get into a extended discussion on this subject but years ago as a ham operator i run into radio interferance with with tv.s. My nieghbour phoned and wanted to know if I was on the air because his tv was being wiped out.I wasn't but I realized my wife was using an electric knife. With test we found that was the culprit and we shared the sam hydro transformer and the dirt was traveling along the wires. You might find that something is interfering from a source not even in your house. Don't believe it is in your equipment. Hope this is some help.

 

[supersonic1414]

Thanks guys!!!! I will check all this stuff. Busy day as we welcomed our second child this am!!!

 

['59_Standard]

Congratulations.

What about the Guitar Lead.

 

[Lolaviola]

Not to get into a extended discussion on this subject but years ago as a ham operator i run into radio interferance with with tv.s. My nieghbour phoned and wanted to know if I was on the air because his tv was being wiped out.I wasn't but I realized my wife was using an electric knife. With test we found that was the culprit and we shared the sam hydro transformer and the dirt was traveling along the wires. You might find that something is interfering from a source not even in your house. Don't believe it is in your equipment. Hope this is some help.

All the houses on my block are about a hundred years old and stuff like this happens routinely. Not guitar related, but I even had to put a non conductive pull chain on the cieling fan in the kitchen because it would ground you thru the refigerator if touching both...ouch!

 

[satilight]

To lolaviola. Your problem is likely that the neutral wire and the hot or live lead are reversed and likely an old house which hasn't the neutral wire grounded which makes the hydro wires floating above ground. Not too safe. Was done that way with old knob and tube wiring likely in the 30 and 40's. Before my electrical years. Just a bit of history

 

[John Thigpen]

Dimmer switches are also common culprits.