Electronics > Beginners
Multimeter shows pots resistance instead of pickup resistance when conn to jack
<< < (3/5) > >>
Rango:

--- Quote from: alsetalokin4017 on October 22, 2019, 06:23:51 pm ---
Third question: Do you mean the mystery wire circuit? yes, check for continuity between the free end of the wire and the guitar's bridge mounting studs and tailpiece studs.  Do you mean the rest of the circuit? Also yes but what exactly do you want to check?

--- End quote ---

Thank you. I appreciate your help. Yes the mystery wire. The problem with this wire is it goes inside somewhere of guitar and i dont' know where is the other end. It's deep inside cavity somewhere where i don't have access to. The other end is NOT seen in ANY other guitar cavities. It's not possible to touch the other end. I have no trust if this wire is actually grounded. It could be but it could also not be at all. If i don't need to ground this wire i would rather not use it as it don't trust it to be honest, hence my question if it NEEDS to be grounded to the rest of the circuit? Maybe this wire is the problem in this circuit?

What if that wire is lose and not connected to anything, meaning other end is not grounded anywhere. If i don't connect this wire will this still work with other grounds or it will NOT work?

The switch brand is switchcraft. This is the diagram for it. The bottom two connections are connected as that's + positive lead where top is negative ground lead. Right leg is neck pickup. Left is bridge pickup.

I've used this video for help but i didn't use shielded cable like he did. Doing the wiring outside i don't think would work as you can't fit those pots threw guitar cavity, however the pots where done outside just like he did.

I'm just NOT understanding where this circuit is failing. Currently it shows O.L which means no connection so not sure what to measure, where with multimeter. If i knew i would do some testing but i'm clueless as to where to start measuring.






alsetalokin4017:
Let us please start with the mystery wire. As I said, this wire is supposed to connect through the guitar's body to the bridge mounting studs and tailpiece, to ground these parts to the rest of the circuit. I can show you videos of guitar makers installing this wire, but it would be simpler for you just to check.  Check for continuity between the free end of this wire and the bridge and/or tailpiece.
alsetalokin4017:
OK, with that particular Switchcraft switch, referring to that diagram, the two terminals on the bottom should be connected together and then to the Tip (+) of the Jack. The top left and top right switch terminals should be connected to the center terminals of the two volume pots respectively. The center top terminal of the switch connects to ground.

I think.

In that diagram the red and green lines show the connections made inside the switch when in the various positions, these are NOT wires you are supposed to add!


alsetalokin4017:

--- Quote ---I'm just NOT understanding where this circuit is failing. Currently it shows O.L which means no connection so not sure what to measure, where with multimeter. If i knew i would do some testing but i'm clueless as to where to start measuring.
--- End quote ---

This is why I think you should start over from scratch, doing one part of the circuit at a time, checking with multimeter to make sure it's right, before going on. At the present time I can't even tell if what you actually have assembled corresponds to any of the circuit diagrams. So I don't know what to tell you to check!
First thing would be a good visual inspection to make sure you have it physically connected up right. Strong lighting, move stuff out of the way if necessary, take pictures, closeups, etc. Use a magnifying glass if you have to!

alsetalokin4017:
Here's a video showing the Bridge ground wire installation.
skip to about 2:35
Navigation
Message Index
Next page
Previous page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod