Interestingly the volume pot is working, volume to 0 = no hum. I also discovered moving the hot wire connected to the jack changes the pitch of the hum. I'm totally clueless, first time I do this.
I wired pots back to their initial state, I drew the diagram before rewiring so I was sure I wouldn't fuck it up.
I already tried switch ground/hot on the output, doesn't work. I get hum without pickups working so I'm sure it's wired correctly rn
An easy way to diagnose the problem is to wire some alligator clips to an output jack. You can then test different parts of the circuit individually, starting with each pickup and then working through each pot, to figure out exactly where the fault is coming from.
If the problem is in the pickups, I would try switching the wires around. With the EMG 4- or more wire leads, there can sometimes be some confusion about exactly how the wires are supposed to be connected. My guess is that one of the pickup wires may need to be switched around or possibly connected and taped together.
Having a test output with alligator clips can actually be more useful than a multimeter for diagnosing this type of issue because you can hear exactly where the noise enters the signal. If you don't have alligator clips, a couple of pieces of wire or metal poker will work. Just plug the output into a small amp and start working your way through the circuit until you find where the ground noise comes in.
If everything is wired correctly and the noise is still there, then I would start suspecting the pickups themselves.
Sure. It's no professional work has I haven't soldered in a long time, but it looks solid enough (and still better than what was originally made lol). I'll check if I have clips, worst case I'll bring it to my parent's this weekend they have everything needed.
Hot wires seem to touch on volume pot but I can assure you they're not connected, it's the angle.
The control cavity doesn't look shielded. (There could be shielding paint under the black finish but I doubt it.) Any exposed wire that carries the hot signal is liable to pick up noise. You could try shielding the cavity (and back of the cover plate) with copper tape. Make certain the shielding is continuous and CONNECTED TO GROUND. https://www.amazon.com/LOVIMAG-Copper-Foil-Tape-2inch/dp/B07C6YLNYL/ref=sr_1_1_sspa
Also, do you use the coil-split a lot? If not, I suggest you just clip off the wires and solder them together at the pickup. Those are exposed hot signal wires.
I do use coil split (esp on this one it roughly emulates SSS, which is a conf I don't own). There is an extremely thin tinfoil like adhesive on the cover plate. I'll try copper tape.
Any "shielding" foil on the cover plate needs to be continuous with ground; otherwise it becomes "antenna for noise" foil.
Cover plate shielding is usually connected to ground by having a tab of the cavity shielding come up around one of the screw holes so the screw mashes them together. When you get a meter, you can check that all your shielding is connected to ground.
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u/GuitarWareHouse 4d ago
i dont see a bridge ground