Last week I was helping others with there wiring problems now I seem to have a problem with mine !!
Soldered every thing up , plugged it in , turned up the volume and what a noise sounds like I've no grounds , touch any metal part and it stops , turn to full volume and all is quiet touch any metal part no noise all grounds are perfect , turn back to 3/4 volume , no grounds !! , put multi-meter on jack plug ground and tried all the grounds it reads 0.00 , only part that doesn't read 0.00 is where cap is soldered to tone pot lug it read 0.17 ? , made up a test lead plugged in to amp on 3/4 volume did the same clipped one end to jack ground and tried all the grounds again pots , string ground plate , strings , tuners , nothing changed still have to touch metal parts to stop it , all parts used are top grade full size pots and orange caps .
Replies
good work jeff
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)
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
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.
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 .
If you havn't got a bad ground wire you probably have a bad pot. Shiz happens. Figure out which and replace it.
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.
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
Jim sez...
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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