Now that I got you to look... Back story, I built an electric guitar about 20 years ago with a single humbucker pickup at the bridge and one volume pot and one tone pot. Until two nights ago everything was wired/soldered as it has been for probably the 20 years. By the looks, I had rewired it, but not sure when.
There was always a hum when I lifted my fingers from the strings, went away as soon as I touched them. Originally, I forgot to ground the bridge, so I ran a black wire from under one of the nuts at the bridge to the pickup. I think that solved one ground issue, but the hum above hum never went away.... So, I decided to use the Internet, found a diagram to wire my guitar and went at it the other night. At first, I thought that only one of the pots was 500K (happened to be the tone and was clearly labeled). I did not notice a marking on the other pot (originally the volume) - last night I did, it's on the side and I can't really make it out, unless I take things apart.
I rewired everything, switching the tone and volume pots and also made changes to how it was originally wired, as it did not reflect the diagram I found. Hum remained, but disappeared when plugged into a portable Boss training monitor/line driver. Plugged into my amp tonight - was plugging into a Mbox mini the other nights (hum was present) and noticed that the guitar is completely quiet from 0 to about 4-5 on the volume knob (guitar), but as I turned up to 10, the hum came back, muted slightly if I touched the strings and really changed when the volume was at 10.
I also attached a wire to one of the strings as a test and made sure it was grounded, but the hum was still there, muting slightly when I touched the strings.
TIA!
Bad pots? Should I buy a new set and capacitor and start fresh?