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Permalink Reply by The Capo Kid on October 15, 2013 at 12:12am

 Here's a pic of the wiring

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• 100_0574.JPG, 1.4 MB

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Permalink Reply by The Capo Kid on October 15, 2013 at 10:03am

UPDATE

I  hooked up the multi-meter to hot and ground lugs of the jack plug , volume off I got reading of 0.00 which is normal , started open volume got no reading , volume fully open got a reading of 0.20 ??? , shouldn't that be the output of the pickup which is 6.8k ??? .

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Permalink Reply by Ron "Oily" Sprague on October 15, 2013 at 2:04pm

Your ground is bad. Somewhere. Go through with your multimeter on every single damn joint, individually. Point to point. Open and closed. Twice. Resolder where necessary.

Looks to me like you also have one too many solder joints to the back of your vol pot. Twist all your ground leads together, and resolder. Once. See if that helps.

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Permalink Reply by The Capo Kid on October 16, 2013 at 4:03am

I've checked and double checked and triple checked resoldered and checked then resoldered another ground and checked  , resoldered all the grounds together as you said , no change

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Permalink Reply by Ron "Oily" Sprague on October 16, 2013 at 7:06am

Then it's something else ;-). Only other thing I can think of is a bad vol pot, like
Jim sez...

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Permalink Reply by The Capo Kid on October 16, 2013 at 9:23am

I've been emailing the company I use all day , I've had one bad pot and they said it's only one in a thousand that is  bad , ye right !!! , I keep asking buy I was only getting a 0.20k reading when I tested using the jack plug , no answer was the reply , so I've taken all the wiring apart and tested the pickup  and what do you think the reading was ?   0.20k !!!!  it was 6.8k when I bought because I tested it  , so i'm not very happy  stiff email to the company followed by return of all the stuff I bought .

 

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Permalink Reply by Jim Wehrmacher on October 15, 2013 at 6:35pm

If you havn't got a bad ground wire you probably have a bad pot. Shiz happens. Figure out which and replace it.

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Permalink Reply by The Phrygian Kid on October 17, 2013 at 10:18pm

Have you sorted this out yet?

Here's my 2c..
Your pots are fine, the .2k resistance is probably the resistance of the pot itself cos your meter is ranging incorrectly..
The pickup itself has a short in it (or in the way you've implemented it)
I see you have a green wire and a shield coming from the pup to ground, first suggestion is lift the shield off the ground, this may solve everything and just means you've misinterpreted the colour scheme with their wiring..

If that doesn't work get back to me, I can't see the third lug on your volume pot clearly, does this go to ground (ie using the pot as a voltage divider) or is it naked (ie using the pot as a variable resistor..) both will work but I need to understand your circuit to troubleshoot any further.

Good luck, try lifting that shield (the fifth wire coming off the pup, the unwrapped one)

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Permalink Reply by The Capo Kid on October 17, 2013 at 10:49pm

 Your exactly right , I didn't get a wiring diagram with this pickup , so I used a Seymour Duncan diagram and wired it , green and bare is ground , black hot , red and white taped together ,if I hadn't of shortened the lead I would have been ok as the bare wire wasn't visible it's only when I shortened the lead I saw the bare wire  when I emailed the company I use they said there pickups have to be wired different, green is live , black and bare are ground and so on , so as you say the bare wire was shorting the pickup out , rewired it all again yesterday also changed the tone pot and cap , but there's still a bit of that same noise there , ok at 1/4 volume and from there to 3/4 volume it comes back as though there's still short somewhere and at full volume it's gone , weird

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Permalink Reply by The Phrygian Kid on October 18, 2013 at 3:41am

Awesome :)

Next time you can pretty much map out the colour scheme with your multimeter, one of the four wires (black in this case, where the SD docs had you thinking green) will show no resistance to the shield, the other side of that wire's coil (lets call this the hot side of coil 1, the closer coil to ground) will show you one coils worth of resistance where the remaining two have no continuity to the shield. It's difficult to determine the intended phase of coil two so that's where you might have to just guess with the remaing two and be prepared to swap them out later, or what I've done a bunch of times with four conductor buckers is hide a cheap switch in the cavity there for flipping the phase of coil two, its pretty easy to work it out once its wired up. But yeah I'll toss in a $1 switch so as to avoid messing around soldering later.

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Permalink Reply by The Capo Kid on October 18, 2013 at 8:22am

 I understand what your saying , but the most annoying thing about this is I emailed the same pic as I posted on here to the guy and he never spotted it , it's quite clear in the pic which way I've wired  it , if he'd have picked it up all I had to do has snip that bare wire from the green and I wouldn't have spent two days resoldering every thing twice , oh well lesson learnt and thanks for the advice .

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Permalink Reply by darryl kernaghan on October 17, 2013 at 11:42pm

good work jeff

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