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Post subject: why is my tone control not active anymore ?
Posted: Thu Jun 19, 2008 1:10 pm
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hi everyone. i have an American Fender Stratocaster left handed.

some years ago ( 3 or 4 ) i replaced the bridge pick up with a Fender red Lace Sensor on the bridge.
i replaced the pick up without any other mods.
so the guitar is stock.

i remember the tone was active on the bridge pick up position too.

the day before i opened the pickguard to make a better solderig job.

after i closed everything, playing the guitar i got now the bridge pick up tone not working anymore!!!


why?? what happened???
in the other pick uopsit is still good and working.
is seems unactive justo on the bridge.

i'm so confused.

my luthier said the american strstocaster have no tone on the bridge position.

i'm totally sure mine had till the day before.
this with thw lace sensor pick up and with the stock one ( years ago )

what the problem could be?

thanx in advance.


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Posted: Thu Jun 19, 2008 2:35 pm
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somthing came undone in the wireing.


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Posted: Thu Jun 19, 2008 4:04 pm
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What model is your strat anyway? A lot of strats don't have tone control at the bridge. If your sure you did, you'll have to take off the pickguard and see if you have a broken connection.

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Posted: Thu Jun 19, 2008 4:24 pm
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On this page -

http://www.fender.com/support/wiring_di ... _lists.php

- you can find wiring diagrams for most Fender guitars. Find the one that matches your model, probably this one:

http://www.fender.com/support/diagrams/ ... 02CPg2.pdf

Check the wiring under your pickguard very carefully to make sure everything matches that diagram. That short little wire joining the middle two terminals on one side of the switch is what hooks up the second tone control to the bridge pickup. Make sure it is there and connected properly.

Last possibility: if you switched out the bridge pickup you perhaps didn't do a perfect job resoldering the new one in place. Dull, grey looking solder joints? To be on the safe side, remove the solder (with solder wick, for example) and do the joints again, getting a nice clean shiny silver finish to your work.

See how you go with that. Cheers


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Post subject:
Posted: Fri Jun 20, 2008 6:01 am
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hi, my guitar is a Fender American Standard Stratocaster Left Handed, model code 7422 700

(on the inside of the pick guard there's a sticker that say 0048702-700)

i'm 100% sure the tone was active on the bridge.

i cleaned and did again the soldering more than a time but seem nothing changes...everything's ok but the tone2 on the bridge doesnt' work.
selecting other positions with the 5way switch, tone2 work as well.

:(

that's strange because i didn't apply any crossing or mods on the wiring lines..

the picture was taken yesterday, today's soldering was better, cleaner and shining.




Image


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Posted: Fri Jun 20, 2008 3:32 pm
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You might just have to take it to a tech, sorry man.

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Is that a mexican poncho
Or is that a sears poncho?
Hmmm...no foolin ...." FZ


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Posted: Mon Jun 23, 2008 6:05 am
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This will be a detailed post: your solution lies within.

Let’s do this carefully. Your tone control works on the middle pickup, right? Therefore, there is no problem with the pot. So, it can ONLY be a wiring issue.

Look again at that wiring diagram I showed you:

http://www.fender.com/support/diagrams/ ... 02CPg2.pdf

That is the current right-handed American Standard Strat, with the bottom tone control working on middle and bridge pickups.

Now, there are various differences between that “standard” wiring scheme and yours in your photo, which makes comparison tricky. However, by the look of it you are missing that little “jumper” wire I mentioned in my previous post. It is the very short wire that goes between tags two and three on the side of the selector switch facing the pots in the diagram. Probably it got left off when the new bridge pickup was installed.

There is a complicating factor, which is that your guitar is left-handed. Here is the wiring diagram for the left-handed American Standard Strat:

http://www.fender.com/support/diagrams/ ... 22APg2.pdf

Now, what is interesting here is that this wiring scheme is different from the right-handed version in several ways, including that the bridge pickup is not included in the tone circuit. Can’t be sure from your photograph, but it looks like this is the circuitry you currently have in your Strat. If so, that is why you have no tone control on the bridge pup.

As I said, there are other differences in the layout, too (for example, the LH diagram and your photo both have the cap on the bottom tone pot, not the top one, as on the RH Standard Strat). Therefore, your solution is a little more complicated than just a single adjustment.

Two ways to go. Either download that right-handed diagram, flip it mirror-fashion in Adobe (or similar), print it out and then re-do your wiring from scratch, copying the current RH American Standard, including tone on bridge. This will probably work, depending what kind of pots you have (can the wiring be reversed on them or not?) and which way you like them to turn on a LH guitar.

Or. Stay with the wiring you’ve got, but add a jumper wire to bring the bridge pup into the tone circuit. This is the one bit where my advice gets dodgy, cos I don’t have your guitar in front of me. I believe you need to run a small jumper wire from the empty tag on the switch at the end nearest to the pickups in your photo down to the very next tag on the same side. But that is if I am reading your photo right. You will have to double-check this bit and do a bit of figuring for yourself. Look at how that jumper is working in the RH diagram, to bring the bridge pup into the tone circuit, and transfer that function across to your layout.

Last thing. In your OP you said your tech told you the bridge pickup on an American Strat doesn’t have a tone control. He is both right and wrong. What he is describing, and what that LH Strat diagram shows, is the “traditional” wiring for a Strat, which indeed leaves the bridge pup wide open with no tone control. However, one of the most popular mods over the decades was to add that little jumper in so’s the bottom tone pot controlled bridge as well as middle. Cos you, me and millions of others want to be able to roll off the bridge pickup a bit, sometimes. Eventually (was it in the 70s or even early 80s?), Fender gave in and included that jumper as standard on many, but to this day not all, American Strats.

If you ain’t got it and you want it, it is now up to you and your soldering iron.

Good luck!


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Posted: Mon Jun 23, 2008 12:43 pm
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hi Ceri!

first, i want to thank you for your accuracy and time spended on this reply :)


i wanted to reply on this matter saturday and sunday because i looked on the wiring schematics so much but the forum was closed.

yes, there are big differences from the same 2 guitars but different on the verison, in this case the right from the left handed one.
the left handed has really no tone on the bridge, opposite the right one.
and not left hand guitarist didn't know that :) that's one reason someone thought it was a soldering issue :)

and yes my scheme is right as the am. standard left handed stratocaster scheme.

so seems everything is perfectly normal...maybe i forgot that thing...but i was sure i had the tone on the brigde too. probably i get confused from the other guitar i have.... i don't know

my tech tested the guitar and said it was ok on the solderings.

so it's just the tone not connected on the bridge.

so a question now, which is the function of the 22k capacitor on the tone control?

may i have to put one on the tone that is not provided of? or better, have i to add one if i need to make the brigde-loop wirning to have the tone on the bridge too?


by the way i posted another question on this forum to get infos from other lefty users ;)


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Post subject: Left-handed Strat - add tone control to bridge p/up
Posted: Tue Jun 24, 2008 6:45 am
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strato80 wrote:
hi Ceri!

first, i want to thank you for your accuracy and time spended on this reply :)


No problem: a pleasure.

strato80 wrote:
so a question now, which is the function of the 22k capacitor on the tone control?

may i have to put one on the tone that is not provided of? or better, have i to add one if i need to make the brigde-loop wirning to have the tone on the bridge too?


Here is another left-hand Strat wiring diagram:

http://www.fender.com/support/diagrams/ ... 22APg2.pdf

Copy that one EXACTLY and you will get the result you want.

That diagram includes two extra capacitors, a .022 one on the other pot and a 1 meg one on the volume. I don't believe you actually need them, but I am not certain on that point. Try it first with just a .022 cap on the top tone pot and see if it works OK. If not, add the extra capacitors.

Good luck!


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Post subject:
Posted: Tue Jun 24, 2008 7:06 am
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ok thanx :)

now i understood everything :)

by the way, as soon as i can i'll get a new pre-loaded pick guard with the 3 p-ups i need and everything properly solderd.


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Post subject:
Posted: Tue Jun 24, 2008 7:14 am
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Glad to be of service.

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