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 Post subject: Re: Treble Pick Problems
 Post Posted: Thu Mar 16, 2006 2:10 am 
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Joined: Mon Aug 08, 2005 1:00 pm
Posts: 4037
Location: Santa Ana, CA
Quote:
again that mysterious capacitor which isn’t shown in any wiring diagram as far as I know.
You're not looking hard enough I guess!

http://www.rickenbacker.com/pdfs/19507.pdf

C3 is the capacitor and there's even a note regarding it. This drawing's dated 1990 and it's been on our website since the beginning.

It's the same on many of our other most commonly referenced drawings too:

http://www.rickenbacker.com/pdfs/19519.pdf
http://www.rickenbacker.com/pdfs/19502.pdf
http://www.rickenbacker.com/pdfs/19511.pdf


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 Post subject: Re: Treble Pick Problems
 Post Posted: Thu Mar 16, 2006 2:39 am 
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Joined: Sun Feb 05, 2006 2:00 pm
Posts: 302
Location: el cajon,cal
On the 4001 (Ithink) schematics, there is mention of cap replaced by a shunt. Wot's dat??? And how do it know?


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 Post subject: Re: Treble Pick Problems
 Post Posted: Thu Mar 16, 2006 2:49 am 
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Joined: Sun Aug 21, 2005 1:00 pm
Posts: 217
Location: Lisbon, Portugal, EUROPE
In layman's terms, a length of wire.


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 Post subject: Re: Treble Pick Problems
 Post Posted: Thu Mar 16, 2006 5:13 am 
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As yes, but very special wire it is. It's best that it's platinum although gold or silver will do in a pinch. The insulation should be the finest 1000 thread Irish linen, undercoated with pure Turkish carbon, and then coated with Italian beeswax to eliminate moisture.

Or you could just use a paperclip or foil gum wrapper.


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 Post subject: Re: Treble Pick Problems
 Post Posted: Thu Mar 16, 2006 5:42 am 
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Joined: Thu Sep 22, 2005 1:00 pm
Posts: 1527
Location: S.W. Michigan
Quote:
As yes, but very special wire it is. It's best that it's platinum although gold or silver will do in a pinch. The insulation should be the finest 1000 thread Irish linen, undercoated with pure Turkish carbon, and then coated with Italian beeswax to eliminate moisture.

Or you could just use a paperclip or foil gum wrapper.


How many nines on the silver? Or in a real pinch would oxygen-free slow drawn copper cyrogenically treated do okay? Inquiring minds want to know....

[and it ain't even April 1st yet!!]


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 Post subject: Re: Treble Pick Problems
 Post Posted: Thu Mar 16, 2006 5:55 am 
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Joined: Thu Feb 23, 2006 2:00 pm
Posts: 132
Location: Texas, USA
Quote:
You're not looking hard enough I guess!

Well, I mentioned that I am not familiar with the bass guitars.
I tried to find the diagram for my 73/Model 480 which has that capacitor.

I looked at:
http://www.rickenbacker.com/service_g_schematics.asp

Guitar & Bass, 4 Control, 2 Pickups, Mono
For Model 4001V63, Model 480, all 650 Models.
http://www.rickenbacker.com/pdfs/19501.pdf

I looked again today, I starred at the diagram for a couple of hours but that capacitor simply didn't show up on my screen.
Maybe I need new glasses or evil twin brother Jim took it away :-)



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 Post subject: Re: Treble Pick Problems
 Post Posted: Mon Apr 03, 2006 8:37 pm 
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Joined: Fri Mar 10, 2006 2:00 pm
Posts: 7
Location: American Fork, Utah
Well I’m back. It’s been awhile since I had a chance to work on it. I have been helping a buddy build his basement studio. I had a chance to look at the pickup. I unwound the tape and found that there is a winding of very fine wire. OK, so I by-passed the cap to see if there was any improvement in signal strength. There was none, just a lot of extra noise. My only conclusion is that the windings are shorted. I still have not got the chance to put an ohm meter on it. You say 7k ohms. I will look for that.

Now my next question is do I rewind the coil and keep it as original as possible or do I just buy a new pickup?


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 Post subject: Re: Treble Pick Problems
 Post Posted: Tue Apr 04, 2006 2:28 am 
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Joined: Thu Sep 22, 2005 1:00 pm
Posts: 1527
Location: S.W. Michigan
Rewinding with #44 wire to 7k ohms would be a very daunting task as the wire is as fine as hair and a lot easier to break. If you had access to a pickup winder, that would make it a lot easier, and then yes you could. Otherwise you'd need to try and find one on eBay from the early 70's. If it is a horseshoe type the magnets may need remagnetizing.


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 Post subject: Re: Treble Pick Problems
 Post Posted: Tue Apr 04, 2006 5:22 am 
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Joined: Sun Aug 21, 2005 1:00 pm
Posts: 217
Location: Lisbon, Portugal, EUROPE
Let's cut to the chase, shall we? Bishdo, I'll be glad to rewind your pickup to original specs - for free. What do you say?


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 Post subject: Re: Treble Pick Problems
 Post Posted: Tue Apr 04, 2006 8:44 pm 
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Joined: Fri Mar 10, 2006 2:00 pm
Posts: 7
Location: American Fork, Utah
Thanks for the offer crazyrick, but Portugal is a bit of a drive. Being an engineer myself I can get access to a coil winder. I just need the specs on the pickup. And to answer a previous question, it is not a horseshoe pickup.


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