Hey folks
My Yamaha BB414 Bass has developed a problem with the J pickup.
For those of you not familiar with the BB414, its a passive PJ with master volume, master tone, 3 way switch.
It has recently developed (overnight, in fact) a massive hum/buzz from the J pickup. Here are the symptoms;
1. Buzzes very, very loudly when the J pickup is soloed. The buzz gets quieter with the volume knob and goes away when I turn the volume all the way down. Turning the tone knob just changes the tone of the buzz.
2. Buzzes less loudly in the middle position
3. Doesn't buzz at all when the P is soloed.
4. Buzzing is unaffected by me touching the strings, bridge, etc.
5. Buzzing goes away if I rotate the bass 90 degrees.
6. I haven't changed anything else in my setup, same cable, same gear, same seat, same equipment nearby. This is a new issue.
7. No wires or connections are visibly broken inside the control cavity.
Any ideas on debugging the source of the problem? I've got a voltmeter and a physics degree so I should be able to fix it myself... The fact the buzzing goes away when I move the bass makes me worry my neighbours have a new router or something through the wall. Wouldn't this affect the P pickup though?
Also, does anyone have a wiring diagram for a BB414?
Comments
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
Cheers
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein