I've been rewiring my guitar to fix the orientation of the pickups so that they actually do hum canceling. No idea why but they wired the neck humbucker backwards. That's the only explanation, so I had to take the 4 conductor wire and reverse it. However, thread time:
Then I touch the bridge ground. The bridge has a wire that connects to your body to ground the electronics and make it silent, except now it's going BZZZZZZZZZTT. WTF now I have a ground loop? This was last night and I gave up trying to find it until today.
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Today I disconnect the neck and I try to find this buzz and it's gone. Great, so I turn the soldering iron on and reconnect the neck, and then try it and DAMMIT THE GROUND LOOP IS BACK I HATE YOU ELECTRONICS! I disconnect it again and search more, and nothing. WTF?
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This is where the programmer in me comes out. I decide that I'm going to have to try out every combination or wiring to find this ground loop, so I take my already small wires and I solder on 1-pin connectors so I can randomly connect them. I do this, and the buzz goes away!
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Awesome, so I figure out the humbucking wiring and get it all working, then I go to solder it back together again, turn the soldering iron on, and DIE YOU PIECE OF SHIT THE BUZZ IS BACK! Ok, so I am going nuts now, I look at another wiring I did and there's a small difference.
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Turn the soldering iron off (are you figuring this out yet?) and remove two wires going to ground, combine them, with just my hand, and it works, no buzz. Great! Ok so it was that one wire. I turn the soldering iron on, and solder that single wire in place of the two wires....
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Put the soldering iron back, go to test AND THE BUZZ IS BACK. ARRRTGGGGG. I use the soldering iron to detach the wire again, and turn the iron off, then hold the wire and no buzz. I'm dying here. WTF, I hate you. I hold the wire there, it works, I keep my hand there....
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I reach for the soldering iron, turn it on, and buzz. Turn it off. Buzz stops. ohhhh you motherfucker iron on. buzz. iron off. NO BUZZ. Then I figure it out. This iron is kind of a shitty electric iron, and it must have no shielding at all so it's a noisy POS.
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So I was thinking that I had a ground loop but it was the soldering iron being electric, shitty, and pointed right at my pickups was causing insane electrical interference, and my putting my hand on the bridge ground was actually just changing it not stopping it.
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So now everything works, but I have to strip off all the "testing harness" I made for no reason and rewire it clean and...stop testing it with the damn soldering iron on.pic.twitter.com/dVHhGMOCN8
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End of conversation
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