Going mad with electronics help

TimberG

hi all about 6 weeks ago I posted that I was having a buzzing from a new build I am doing it was suggested that I shield the cavities. I have stripped all electrics out and painted cavities with shielding paint, changed all the pots for new 500k mini cts, checked all my joints as I have gone for continuity and everything ok, followed the Seymour Duncan wiring diagram to the letter 

and guess what......still a damn buzz....gets worse when you touch the bridge as it did, all volumes work again the buzz get worse when the tone pots are played with

what am I doing wrong!....help needed before I go mad

cheers guys

Sporky

Worse when you touch the bridge?

Have you checked you've got signal and ground the right way on the output jack?

Alegree

I've had this issue when I've accidentally hooked up ground and signal the wrong way to an output jack before.

Check for shorts rather than bad connections next, would be my advice.

Bridgehouse

You've got a grounding issue somewhere chap. Could you post the circuit diagram you used and a pic of your gubbins?

TimberG

Hi guys going to check the jack tomorrow as this kind of makes sense 

yes it does get worse when you touch the bridge @Sporky ;

ICBM

If it's noisy and gets worse when you touch the bridge, but otherwise works, the jack is wired backwards.

If it makes you feel better I did that a couple of weeks ago, I have no idea how! It's not like I haven't wired thousands of jacks .

TimberG

Cheers @ICBM , I am going to try this this evening so will report back, Its interesting I have been doing a little research on Jack plugs and think I have wired two guitars backwards as I have the same problem on another guitar. 

Note to oneself more hast less speed....oh and check the ground before wiring a Jack

TimberG

Well I can't believe what a noooob I've been 

thanks guys your correct the jack was wired the wrong way 

ICBM

TimberG said:

Well I can't believe what a noooob I've been

The one I did - after thirty years of this - the other week was on a 335-type guitar . Luckily - and actually quite untypically - I hadn't overly neatened the wiring so I was able to get it back out far enough to fix just by dropping the nearest tone control into the guitar, not the whole wiring loom.

Still not sure how I did it, but these things happen...