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I built a guitar with Lace Sensor Duallys, splitted them with miniswitches and used a TBX tone control. Everything works according to plan except the TBX. When I turn it up past the detent into treble it makes a pretty wicked hum. Any help or tips will be much appreciated.
Cheers, Van

When they are split, they are single coils. And single coils hum.

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"Act your age, not your shoe size" - Prince

It makes a high pitched hum regardless of whether they're split or in dual mode.

Then you have other problems.
Is it grounded?

_________________
"Act your age, not your shoe size" - Prince

Sounds like an earth problem. I fitted one to a 90s strat years ago and had a similar problem. That turned out to be a broken wire. Using a multimeter check for continuity between all your grounds and bridge ect. I'll bet one is of high resistance or broken/missing, the tbx pot shouldnt cause a problem itself, its just two pots in one that switch over at pos5. Double check your wiring against the diagram too.

Is it a fender made tbx?

Thinking about this earlier and if it only does it on one pot then it's probably wiring or a faulty pot or cap. The only thing i have with tbx is a '97 USA std strat which i fitted a couple of years back.

so i took the plate off and took a pic for you.



The cap is only connected from the bottom pot of the tbx to the body, so that would probably be my first check van.

Thanks for the photo and all the suggestions. Yes, it is a Fender TBX and yes, I will get busy with it this weekend. My soldering leaves much to be desired and my glob of ground wires soldered to the vol. pot are a mess. Maybe I'll pull them loose and do it again for the third time.
Thanks again.