FDP Home Page / FDP Forum / FAQ's

The FDP is made possible by the following companies and individual members like you.
Please use the links below to show them we value their sponsorship.

MOD KITS DIY

Guitar Center

Musician's Friend

Antique Electronics Supply

Amazon

Amplified Parts

Yellowjackets Tube Converters

Apex Tube Matching

Jensen Loudspeakers

Sweetwater

WD Music


* God bless America and our men and women in uniform *

* Illegitimi non carborundum! *

If you benefit and learn from the FDP and enjoy our site, please help support us and become a Contributing Member or make a Donation today! The FDP counts on YOU to help keep the site going with an annual contribution. It's quick and easy with PayPal. Please do it TODAY!

Chris Greene, Host & Founder

LOST YOUR PASSWORD?

......................................................................

   
FDP Jam
Calendar
Find musicians
in your area!
  Search the Forums  

FDP Forum / Miscellaneous and Non-Fender Topics / SSS Strat noiseless in 4th position only, what the heck?

Viera
Contributing Member
**********
********

Santee CA

I forgot my tagline
Sep 26th, 2017 07:15 PM   Edit   Profile   Print Topic   Search Topic

My recently acquired 1997 hardtail Strat with original pups (I’m almost certain) is doing a strange thing, in a good way (I think).

It has normal 60 cycle hum in all positions except the middle/neck pup position. It’s noiseless in that position, I mean dead quiet. What gives?

I’m thinking that perhaps the neck pup might somehow be RWRP relative to the middle pup. Then again I’m hopelessly inept when it comes to most things electricity/electronics, so I’m probably wrong.

Opinions welcome, thanks.


Peegoo
Contributing Member
**********
**********
******

Deus

ex Machina
Sep 26th, 2017 07:38 PM   Edit   Profile   Print Topic   Search Topic

Best thing to do is pop the hood and look a the color codes for the pickup leads. I'm guessing the bridge pickup may be wired backwards, but there are several reasons why it's acting goofy.

Also check for continuity across the jack plate and the bridge plate. If there is none--that may be a contributing reason.

Viera
Contributing Member
**********
********

Santee CA

I forgot my tagline
Sep 26th, 2017 08:20 PM   Edit   Profile   Print Topic   Search Topic

Thanks Peegoo. I'll "pop the hood" next time I'm futzing with guitar maintenance/upkeep.

If the bridge pup is wired backwards could it be that the middle pup might be RWRP?

Hammond101
Contributing Member
**********
*

So. Cal. USA

Sep 26th, 2017 09:34 PM   Edit   Profile   Print Topic   Search Topic

It is also possible that the RWRP PU was installed in the neck position so you only get noise cancelling with the bridge middle.

You might also want to do the mini screwdriver test and check each PU by tapping on it and the other three to make sure the switch is correctly wired.

Viera
Contributing Member
**********
********

Santee CA

I forgot my tagline
Sep 26th, 2017 09:45 PM   Edit   Profile   Print Topic   Search Topic

Will do Hammond101.

This really isn't a problem per se, unless it's a predecessor to other issues. For now I'm just looking to know what's going on. If in fact the neck is RWRP I might just mod the Strat to enable the bridge/neck combo; which theoretically could also be hum cancelling?

Te 52

Laws of Physics

strictly enforced
Sep 26th, 2017 09:54 PM   Edit   Profile   Print Topic   Search Topic

Another possibility is that one of the pickups might not be in its correct position.

If you have a compass, put the guitar in a vertical position, and hold the compass near each pickup. The compass needle should either swing to N or S. That will tell you the 'P' (magnetic polarity) part of the equation. For hum cancellation in positions 2 and 4 you need two norths and one south, or two souths and one north, the odd pickup being in the middle position. Then it's just a matter of putting each pickup in the correct position and wiring them all correctly (the 'W' part of the equation).

If you don't have a compass but do have a spare pickup, hold that pickup face to face with each of the pickups in the guitar and note if the pickups attract or repel each other. Don't let them crash into each other, though, that can damage alnico magnets.

(This message was last edited by Te 52 at 12:14 AM, Sep 27th, 2017)

Hammond101
Contributing Member
**********
*

So. Cal. USA

Sep 27th, 2017 10:22 AM   Edit   Profile   Print Topic   Search Topic

Te 52, Yep, that's what I was getting at early in my post. The RWRP may be installed in the neck. The compass test is a good idea.

SonicBlue

Sunbury-on-Thames

Sep 27th, 2017 10:28 AM   Edit   Profile   Print Topic   Search Topic

What's the volume level like in position 2 compared to 4?

Viera
Contributing Member
**********
********

Santee CA

I forgot my tagline
Sep 27th, 2017 08:09 PM   Edit   Profile   Print Topic   Search Topic

Ok, I did the spare pickup test per Te 52. The bridge & neck repel. The middle attracts. I guess that means that the middle is RWRP and that the bridge might be wired backwards per Peegoo?

SonicBlue: There is no discernible difference in the 2 & 4 position volumes. Thanks for bringing that up.

SonicBlue

Sunbury-on-Thames

Sep 28th, 2017 04:15 AM   Edit   Profile   Print Topic   Search Topic

There's an easy way to check if you have or can borrow an analogue multimeter, one with a pointer.

Set the meter to DC Volts on its lowest, most sensitive range.

Plug a lead into the guitar and connect the meter leads to the other end, sleeve and tip. It doesn't matter which way round.

Select position 5, the neck pickup. This will be your reference.

Place a screwdriver over the neck p/u, across the strings in line with the polepieces.

Watching the meter, move the screwdriver sharply upwards, away from the strings.

Note which direction the needle kicks.

Repeat for the middle (position 3) then bridge (position 1) pickups. They should each move the pointer in the same direction as position 5.

If one doesn't it's wired backwards. If both middle and bridge move in the opposite direction to the neck, it's the neck that needs rewiring!

Te 52

Laws of Physics

strictly enforced
Sep 28th, 2017 01:15 PM   Edit   Profile   Print Topic   Search Topic

"...The bridge & neck repel. The middle attracts. I guess that means that the middle is RWRP..."

Not quite. It means that the middle pickup is RP (reverse polarity) but doesn't answer the RW (reverse wound) part. But SonicBlue's test will answer that question.

However, something still doesn't quite add up. Everything I've read so far about your guitar's humbucking performance suggests that you have a proper set of RWRP pickups mounted in their correct positions but with the wires to the bridge pickup swapped, *except*: If all the above is correct, position 2 (M+B) should not only be non-humbucking, it should also be out of phase, producing a weak, thin, "tinny" sound. But you haven't described that position as such.

So I'm still a bit puzzled... ?8-

(This message was last edited by Te 52 at 09:56 PM, Sep 28th, 2017)

Viera
Contributing Member
**********
********

Santee CA

I forgot my tagline
Sep 28th, 2017 07:18 PM   Edit   Profile   Print Topic   Search Topic

Thanks for the additional info SonicBlue. I'll see if I can get my hands on a meter.

Te 52: I won't have time to do any playing for a day or 2, but I'll report back regarding whether the M+B sound out of phase. Thanks.

FDP Forum / Miscellaneous and Non-Fender Topics / SSS Strat noiseless in 4th position only, what the heck?




Reply to this Topic
Display my email address             Lost your password?
Your Message:
Link Address (URL):
Link Title:




Moderators: Chris Greene  Iron Man  reverendrob  

FDP, LLC Privacy Policy: Your real name, username, and email
are held in confidence and not disclosed to any third parties, sold, or
used for anything other than FDP Forum registration unless you specifically authorize disclosure.

Furtkamp.com 
Internet Application Development

Copyright © 1999-2017 Fender Discussion Page, LLC   All Rights Reserved