On my #4, the black maple with purple fretboard, I used a push/pull pot wired as a tone control with bypass: pushed down is bypassed, pulled up is tone. Here is the diagram. (For the life of me, I can't remember where I found the original online, and searching doesn't bring up anything that looks familiar.)
There's a good possibility that I simply drew this diagram wrong. Actually, since most of the diagrams online are of a push tone, pull bypass, that's a rather high probability.
Anybody see anything that looks obviously wrong? Thanks!
And in the guitar.
It works, except for one little funny problem... when the pot is pushed down and rotated fully clockwise, the signal cuts. Nothing.Wiring help: accidental kill-switch!
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Wiring help: accidental kill-switch!
-Ruining perfectly good wood, one day at a time.
Re: Wiring help: accidental kill-switch!
Remove wire on pot terminal 3 and remove the ground wire to the switch.
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Them kids was fast as light-nin.
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Re: Wiring help: accidental kill-switch!
Thanks, Dan. After posting this question, I went back out to the shop to poke around a little more. I got to thinking about why it would be one direction of rotation that caused the signal cut and not the other. With pot terminals 1 and 3 wired symmetrically to the middle push/pull tabs, what's different in the down position? That one ground on the right: when the wiper is turned fully clockwise, the whole signal grounds out. (This is a pretty elementary "lightbulb" moment, but my understanding of the signal path through electronics is pretty elementary. These mistakes help me learn!)Dan Smith wrote:Remove wire on pot terminal 3 and remove the ground wire to the switch.
I clipped that ground, and problem solved. What would be a glaringly obvious error to anyone with more experience was something I simply overlooked.
But you suggested I remove another wire, Dan. It works now - pushed bypasses the cap, and pulled operates as a tone control - so what else would removing the wire on terminal 3 do? Is it just redundant? Can you walk me through this? I appreciate your time and patience.
-Ruining perfectly good wood, one day at a time.
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Re: Wiring help: accidental kill-switch!
As long as you removed it from the pot, that's all you need to do. It doesn't matter at all if the switch has grounded terminals that connect to nothing else.
- Mark Swanson, guitarist, MIMForum Staff
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Re: Wiring help: accidental kill-switch!
I think "connected to nothing else" is the key to the bypass in this situation. In the push position, it's a dead end for the signal; in the pull position, it filters through the cap as the pot is turned counterclockwise.
-Ruining perfectly good wood, one day at a time.