Replacing resistor with pot

[Kerly]

Ive used this picture to guide my "replace resistor with pot" mods.


Unfortunately, this has caused my pots to either be "on or off" in the case of my Small Clone from Tonepad. Using mods for "output volume" and "mix control" from build reports.
So my question is, is this the correct way to wire pots to be a continuous control. And also, does the side in which the "jumper" from lug 2 to 3 matter which side it is on? (depending on the flow of the current?) Because im not sure if I wired the "jumper" in between the correct lugs.

[John Lyons]

For a volume modification you may need to configure the pot as a voltage divider.
Lug 3 = in, Lug 2 out and lug 1 ground.

The mix control should need the same configuration but I'd need to see the schematic.

john

[Zben3129]

Also, (I could be wrong on this, but I seem to remember cooking pots before) don't put DC voltage across a pot. So if you were thinking about replacing a resistor that lets say goes from 9v to a collector on a transistor, you might burn the pot. Pots don't like DC

^^Correct me if I am wrong, as I probably am^^

Zach

[MusicAudio]

Also, (I could be wrong on this, but I seem to remember cooking pots before) don't put DC voltage across a pot. So if you were thinking about replacing a resistor that lets say goes from 9v to a collector on a transistor, you might burn the pot. Pots don't like DC

I think you are half right here. If it can handle the power dissipated by the DC then the pot itself will be ok. Audio signals, however, generally don't like to share a pot with DC; a sure fire way to get crackles and pops when you rotate the shaft.

[Kerly]

"For a volume modification you may need to configure the pot as a voltage divider.
Lug 3 = in, Lug 2 out and lug 1 ground."

Sorry, I would quote you, but the quote button isnt working for me right now.
Thank you, that is very helpful, the volume was the pot I was having problems with, and also I was using a linear pot (not too sure how big of a difference that makes although I have heard many times against it, just never compared the two myself)

And with the mix control, I found out that it wasn't doing anything because I hadn't adjusted the trim pot yet.
But im still wondering if by changing the jumper (say from pot 1 & 2 to pots 2 & 3) it will cause any negative effect or will it just cause the pot to work in reverse?
Now im off to debugg my small stone

[John Lyons]

A linear pot will work. Both log and lin will work but the "feel" of
how the control works may be better with a log pot.
If it's a blend then lin may be better. Try it out.
As long as you have the output on lug 2 then the other two lugs
don't matter. (for the blend pot.
For the trimmer it won't matter where the jumper is other than
possibly working backwards.
It will work but it may work backwards.
Then you will need to reverse the outer lug wires. Won't hurt anything.

In the future post a schematic or something to look at so we know
what we are dealing with without having to look it up...

john