Hi,
I've just added the "blower switch" mod to an LP Junior-style guitar with one P90 pickup, a volume knob and a tone knob. I've wired the mod onto a push-pull tone pot so that when it's in the up position the controls function as normal; in the down position the volume and tone pots are bypassed.
The mod seems to work as planned, but an issue I've found is that there's a "blip" noise when using the push/pull knob. After experimenting a bit, I've found that if I push/pull the knob very slowly (oo-er) there's actually a point between the two different positions where the sound cuts out completely. This wasn't obvious when switching at normal speed.
As I've never used a push/pull pot before (or a mod like this), I'm wondering if the cause of this is: a dodgy pot, incorrect wiring, some other issue, or if this might even be normal for this mod?
Thanks for any advice.
Comments
http://www.thefretboard.co.uk/discussion/89942/caspercaster#latest
I don't know of any push-pull switch - or normal mini-toggle, if you had thought of changing it for one of those - which is make-before-break.
"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
This is also why I don't like 'superswitches' for Strats or even the 4-way Tele switches - they're also break-before-make so you get a louder than normal switch pop, or if you're unlucky and the switch sticks just at the critical point, silence.
It's the original Strat and Tele switches that are unusual in being make-before-break. Whether that was a factor in their choice originally or whether Leo Fender just picked what was easily available and fitted in the guitars, I don't know.
"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
Anyway, back to your problem - I've never had that issue myself, maybe a dodgy pot? or a dodgy brand?