I need some help debugging my latest build, which is a vintage brownface vibrolux. On the normal channel, when I plug something in, I get a loud humming noise. I think one of my tube sockets has something stuck in it, though, because the tube isn't sitting fully inside. I will grab another tube socket whenever I make my next order and let you guys know what the issue is there. My guess is it is most likely the socket.
Anyways, on the bright channel, if you turn up and down the volume knob (with or without anything plugged in) there is an increasingly loud buzz the more you turn up the volume. I have no idea what the problem is there. With the guitar plugged in, the channel works as normal, just it has this hum. Also, the "2" input isn't working on the bright channel. I believe I have it wired correctly, but when I plug something in, no guitar signal comes through.
When I DI into the effects return (which I added to this build), the hum goes away and it is quiet, and I can hear my guitar signal coming through the power tubes.
Let me know what you think the problem may be. I built my own PCB and designed my own chassis for this build (to make it a learning experience so my dad will keep funding these builds
), so it is possible that there is something wrong there, but I've been building PCBs for a few years now (for pedals), so I doubt that that's what the problem is, but I'm definitely no expert on this subject matter. Let me know what you guys think the issue is. Thanks so much for taking the time to read this and for your willingness to help.
matoni
